./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1250.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 b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:13:37,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:13:37,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:13:37,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:13:37,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:13:37,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:13:37,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:13:37,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:13:37,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:13:37,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:13:37,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:13:37,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:13:37,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:13:37,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:13:37,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:13:37,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:13:37,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:13:37,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:13:37,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:13:37,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:13:37,953 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:13:37,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:13:37,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:13:37,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:13:37,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:13:37,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:13:37,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:13:37,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:13:37,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:13:37,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:13:37,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:13:37,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:13:37,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:13:37,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:13:37,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:13:37,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:13:37,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:13:37,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:13:37,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:13:37,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:13:37,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:13:37,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:13:37,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:13:37,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:13:37,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:13:37,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:13:37,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:13:37,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:13:37,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:13:37,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:13:37,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:13:37,995 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:13:37,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:13:37,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:13:37,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:13:37,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:13:37,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:13:37,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:13:37,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:13:37,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:13:37,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:13:37,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:13:37,998 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:13:37,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:13:37,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:13:37,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:13:37,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:13:37,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:13:37,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:13:37,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:13:38,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:13:38,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:13:38,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:13:38,000 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:13:38,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:13:38,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:13:38,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2022-07-12 03:13:38,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:13:38,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:13:38,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:13:38,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:13:38,247 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:13:38,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-07-12 03:13:38,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d8cface/2d42bb244a2748bea1c562e9d15b038c/FLAG15af0df4d [2022-07-12 03:13:38,656 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:13:38,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-07-12 03:13:38,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d8cface/2d42bb244a2748bea1c562e9d15b038c/FLAG15af0df4d [2022-07-12 03:13:38,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d8cface/2d42bb244a2748bea1c562e9d15b038c [2022-07-12 03:13:38,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:13:38,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:13:38,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:13:38,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:13:38,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:13:38,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4796ea26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38, skipping insertion in model container [2022-07-12 03:13:38,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:13:38,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:13:38,805 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-newlib/float_req_bl_1250.c[1719,1732] [2022-07-12 03:13:38,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:13:38,812 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:13:38,825 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-newlib/float_req_bl_1250.c[1719,1732] [2022-07-12 03:13:38,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:13:38,835 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:13:38,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38 WrapperNode [2022-07-12 03:13:38,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:13:38,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:13:38,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:13:38,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:13:38,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,874 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2022-07-12 03:13:38,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:13:38,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:13:38,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:13:38,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:13:38,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:13:38,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:13:38,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:13:38,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:13:38,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (1/1) ... [2022-07-12 03:13:38,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:13:38,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:13:38,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 03:13:38,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 03:13:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:13:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:13:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 03:13:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-07-12 03:13:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-07-12 03:13:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-12 03:13:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:13:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:13:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 03:13:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:13:38,999 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:13:39,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:13:39,182 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:13:39,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:13:39,187 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 03:13:39,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:13:39 BoogieIcfgContainer [2022-07-12 03:13:39,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:13:39,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:13:39,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:13:39,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:13:39,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:13:38" (1/3) ... [2022-07-12 03:13:39,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e11d146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:13:39, skipping insertion in model container [2022-07-12 03:13:39,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:38" (2/3) ... [2022-07-12 03:13:39,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e11d146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:13:39, skipping insertion in model container [2022-07-12 03:13:39,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:13:39" (3/3) ... [2022-07-12 03:13:39,204 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2022-07-12 03:13:39,218 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:13:39,218 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:13:39,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:13:39,269 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5aa7a127, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31343091 [2022-07-12 03:13:39,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:13:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:13:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 03:13:39,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:39,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:39,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1232868241, now seen corresponding path program 1 times [2022-07-12 03:13:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:13:39,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863724548] [2022-07-12 03:13:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:39,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:13:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:13:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:39,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:13:39,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863724548] [2022-07-12 03:13:39,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863724548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:39,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:39,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:13:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143488347] [2022-07-12 03:13:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:39,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:13:39,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:13:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:13:39,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:13:39,508 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:39,543 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-07-12 03:13:39,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:13:39,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-12 03:13:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:39,551 INFO L225 Difference]: With dead ends: 51 [2022-07-12 03:13:39,551 INFO L226 Difference]: Without dead ends: 24 [2022-07-12 03:13:39,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:13:39,556 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:39,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-12 03:13:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-12 03:13:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:13:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-07-12 03:13:39,588 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 14 [2022-07-12 03:13:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:39,589 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-07-12 03:13:39,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:39,589 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-07-12 03:13:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 03:13:39,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:39,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:39,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:13:39,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1566908876, now seen corresponding path program 1 times [2022-07-12 03:13:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:13:39,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496771357] [2022-07-12 03:13:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:39,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:13:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:13:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:13:39,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496771357] [2022-07-12 03:13:39,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496771357] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:39,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:39,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:13:39,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571418700] [2022-07-12 03:13:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:13:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:13:39,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:13:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:39,752 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:39,792 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-07-12 03:13:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:13:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-12 03:13:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:39,796 INFO L225 Difference]: With dead ends: 33 [2022-07-12 03:13:39,796 INFO L226 Difference]: Without dead ends: 28 [2022-07-12 03:13:39,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:39,808 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:39,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 99 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-12 03:13:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-12 03:13:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-12 03:13:39,815 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 15 [2022-07-12 03:13:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:39,815 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-12 03:13:39,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-12 03:13:39,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 03:13:39,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:39,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:39,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:13:39,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1928564788, now seen corresponding path program 1 times [2022-07-12 03:13:39,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:13:39,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734429076] [2022-07-12 03:13:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:13:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:13:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:39,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:13:39,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734429076] [2022-07-12 03:13:39,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734429076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:39,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:39,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:13:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678350459] [2022-07-12 03:13:39,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:39,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:13:39,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:13:39,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:13:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:39,923 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:39,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:39,962 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-12 03:13:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:13:39,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-12 03:13:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:39,963 INFO L225 Difference]: With dead ends: 37 [2022-07-12 03:13:39,963 INFO L226 Difference]: Without dead ends: 32 [2022-07-12 03:13:39,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:39,965 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:39,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-12 03:13:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-07-12 03:13:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-12 03:13:39,970 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 16 [2022-07-12 03:13:39,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:39,970 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-12 03:13:39,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-12 03:13:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 03:13:39,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:39,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 03:13:39,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash -20784584, now seen corresponding path program 1 times [2022-07-12 03:13:39,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:13:39,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776113653] [2022-07-12 03:13:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:13:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:13:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:13:40,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776113653] [2022-07-12 03:13:40,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776113653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:40,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:40,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:13:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144654627] [2022-07-12 03:13:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:40,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:13:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:13:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:13:40,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:40,083 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:40,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:40,131 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-12 03:13:40,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:13:40,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-12 03:13:40,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:40,133 INFO L225 Difference]: With dead ends: 37 [2022-07-12 03:13:40,133 INFO L226 Difference]: Without dead ends: 32 [2022-07-12 03:13:40,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:40,134 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:40,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-12 03:13:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-07-12 03:13:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-12 03:13:40,138 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 17 [2022-07-12 03:13:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:40,138 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-12 03:13:40,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-12 03:13:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 03:13:40,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:40,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:40,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 03:13:40,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1039043768, now seen corresponding path program 1 times [2022-07-12 03:13:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:13:40,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125876501] [2022-07-12 03:13:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:13:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:13:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:40,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:13:40,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125876501] [2022-07-12 03:13:40,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125876501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:40,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:40,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:13:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840183106] [2022-07-12 03:13:40,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:40,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:13:40,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:13:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:13:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:40,219 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:40,239 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-12 03:13:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:13:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-12 03:13:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:40,240 INFO L225 Difference]: With dead ends: 37 [2022-07-12 03:13:40,241 INFO L226 Difference]: Without dead ends: 32 [2022-07-12 03:13:40,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:13:40,241 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:40,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-12 03:13:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-07-12 03:13:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-12 03:13:40,251 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 18 [2022-07-12 03:13:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:40,252 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-12 03:13:40,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-12 03:13:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 03:13:40,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:40,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 03:13:40,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -768410695, now seen corresponding path program 1 times [2022-07-12 03:13:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:13:40,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673343849] [2022-07-12 03:13:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:13:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:13:40,283 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 03:13:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:13:40,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 03:13:40,319 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 03:13:40,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:13:40,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 03:13:40,325 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-12 03:13:40,328 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:13:40,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:13:40 BoogieIcfgContainer [2022-07-12 03:13:40,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:13:40,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:13:40,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:13:40,353 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:13:40,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:13:39" (3/4) ... [2022-07-12 03:13:40,355 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 03:13:40,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:13:40,357 INFO L158 Benchmark]: Toolchain (without parser) took 1683.47ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 54.3MB in the end (delta: -190.0kB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2022-07-12 03:13:40,357 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:13:40,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.94ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 53.8MB in the beginning and 86.5MB in the end (delta: -32.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 03:13:40,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.60ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:13:40,358 INFO L158 Benchmark]: Boogie Preprocessor took 17.74ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 83.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:13:40,358 INFO L158 Benchmark]: RCFGBuilder took 294.99ms. Allocated memory is still 111.1MB. Free memory was 83.9MB in the beginning and 72.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 03:13:40,358 INFO L158 Benchmark]: TraceAbstraction took 1161.92ms. Allocated memory is still 111.1MB. Free memory was 71.9MB in the beginning and 55.0MB in the end (delta: 17.0MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-07-12 03:13:40,358 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 111.1MB. Free memory was 55.0MB in the beginning and 54.3MB in the end (delta: 719.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:13:40,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.94ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 53.8MB in the beginning and 86.5MB in the end (delta: -32.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.60ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.74ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 83.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 294.99ms. Allocated memory is still 111.1MB. Free memory was 83.9MB in the beginning and 72.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1161.92ms. Allocated memory is still 111.1MB. Free memory was 71.9MB in the beginning and 55.0MB in the end (delta: 17.0MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 111.1MB. Free memory was 55.0MB in the beginning and 54.3MB in the end (delta: 719.7kB). 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 - UnprovableResult [Line: 67]: 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 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L64] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578690] [L22] __uint32_t w; VAL [\old(x)=4286578690, x=4286578690] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578690, w=4286578689, x=4286578690] [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578690, w=4286578689, x=4286578690] [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578690, w=4286578689, x=4286578690] [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; VAL [\old(x)=4286578690, \result=0, w=4286578689, x=4286578690] [L45] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578690, \old(y)=4286578691, __fpclassify_float(x)=0, x=4286578690, y=4286578691] [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; VAL [\old(x)=4286578690, \old(y)=4286578691, \result=4286578691, x=4286578690, y=4286578691] [L64] RET, EXPR fmax_float(x, y) [L64] float res = fmax_float(x, y); [L66] CALL, EXPR isnan_float(res) [L56] return x != x; VAL [\old(x)=4286578691, \result=0, x=4286578691] [L66] RET, EXPR isnan_float(res) [L66] COND TRUE !isnan_float(res) [L67] reach_error() VAL [res=4286578691, x=4286578690, y=4286578691] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 160 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2022-07-12 03:13:40,389 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 -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-newlib/float_req_bl_1250.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 b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:13:42,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:13:42,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:13:42,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:13:42,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:13:42,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:13:42,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:13:42,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:13:42,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:13:42,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:13:42,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:13:42,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:13:42,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:13:42,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:13:42,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:13:42,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:13:42,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:13:42,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:13:42,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:13:42,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:13:42,302 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:13:42,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:13:42,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:13:42,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:13:42,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:13:42,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:13:42,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:13:42,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:13:42,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:13:42,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:13:42,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:13:42,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:13:42,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:13:42,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:13:42,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:13:42,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:13:42,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:13:42,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:13:42,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:13:42,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:13:42,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:13:42,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:13:42,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 03:13:42,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:13:42,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:13:42,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:13:42,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:13:42,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:13:42,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:13:42,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:13:42,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:13:42,356 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:13:42,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:13:42,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:13:42,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:13:42,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:13:42,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:13:42,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:13:42,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:13:42,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 03:13:42,358 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 03:13:42,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 03:13:42,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:13:42,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:13:42,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:13:42,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:13:42,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:13:42,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:13:42,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:13:42,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:13:42,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:13:42,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:13:42,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:13:42,361 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 03:13:42,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 03:13:42,361 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:13:42,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:13:42,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:13:42,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 03:13:42,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2022-07-12 03:13:42,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:13:42,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:13:42,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:13:42,676 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:13:42,676 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:13:42,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-07-12 03:13:42,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd372864b/8e470ddabd9241279c3c5710a5125ab0/FLAG0c1d1b13c [2022-07-12 03:13:43,102 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:13:43,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2022-07-12 03:13:43,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd372864b/8e470ddabd9241279c3c5710a5125ab0/FLAG0c1d1b13c [2022-07-12 03:13:43,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd372864b/8e470ddabd9241279c3c5710a5125ab0 [2022-07-12 03:13:43,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:13:43,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:13:43,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:13:43,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:13:43,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:13:43,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494d5c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43, skipping insertion in model container [2022-07-12 03:13:43,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:13:43,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:13:43,324 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-newlib/float_req_bl_1250.c[1719,1732] [2022-07-12 03:13:43,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:13:43,337 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:13:43,362 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-newlib/float_req_bl_1250.c[1719,1732] [2022-07-12 03:13:43,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:13:43,376 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:13:43,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43 WrapperNode [2022-07-12 03:13:43,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:13:43,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:13:43,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:13:43,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:13:43,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,410 INFO L137 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2022-07-12 03:13:43,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:13:43,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:13:43,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:13:43,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:13:43,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:13:43,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:13:43,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:13:43,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:13:43,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (1/1) ... [2022-07-12 03:13:43,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:13:43,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:13:43,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 03:13:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:13:43,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 03:13:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 03:13:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 03:13:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-07-12 03:13:43,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-07-12 03:13:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 03:13:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:13:43,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:13:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-07-12 03:13:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:13:43,605 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:13:43,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:13:43,722 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:13:43,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:13:43,727 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 03:13:43,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:13:43 BoogieIcfgContainer [2022-07-12 03:13:43,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:13:43,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:13:43,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:13:43,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:13:43,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:13:43" (1/3) ... [2022-07-12 03:13:43,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0daa93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:13:43, skipping insertion in model container [2022-07-12 03:13:43,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:13:43" (2/3) ... [2022-07-12 03:13:43,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0daa93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:13:43, skipping insertion in model container [2022-07-12 03:13:43,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:13:43" (3/3) ... [2022-07-12 03:13:43,765 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2022-07-12 03:13:43,774 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:13:43,775 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:13:43,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:13:43,829 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71e22bb0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@451cdb21 [2022-07-12 03:13:43,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:13:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:13:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:13:43,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:43,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:43,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:43,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2048951326, now seen corresponding path program 1 times [2022-07-12 03:13:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:43,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598730819] [2022-07-12 03:13:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:43,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:43,866 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) [2022-07-12 03:13:43,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 03:13:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:43,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 03:13:43,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:43,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:43,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598730819] [2022-07-12 03:13:43,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598730819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:43,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:43,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:13:43,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638353510] [2022-07-12 03:13:43,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:43,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:13:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:13:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:13:44,021 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:44,042 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2022-07-12 03:13:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:13:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-07-12 03:13:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:44,050 INFO L225 Difference]: With dead ends: 47 [2022-07-12 03:13:44,051 INFO L226 Difference]: Without dead ends: 22 [2022-07-12 03:13:44,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:13:44,057 INFO L413 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:44,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-12 03:13:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-12 03:13:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:13:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-07-12 03:13:44,100 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2022-07-12 03:13:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:44,100 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-07-12 03:13:44,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-07-12 03:13:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 03:13:44,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:44,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:44,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:13:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:44,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1561923165, now seen corresponding path program 1 times [2022-07-12 03:13:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:44,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582599720] [2022-07-12 03:13:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:44,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:44,319 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) [2022-07-12 03:13:44,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 03:13:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:44,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 03:13:44,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:44,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:44,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:44,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582599720] [2022-07-12 03:13:44,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582599720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:44,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:44,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:13:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520286973] [2022-07-12 03:13:44,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:44,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:13:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:13:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:44,463 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:44,516 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-07-12 03:13:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:13:44,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-12 03:13:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:44,518 INFO L225 Difference]: With dead ends: 30 [2022-07-12 03:13:44,518 INFO L226 Difference]: Without dead ends: 25 [2022-07-12 03:13:44,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:44,519 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:44,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-12 03:13:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-12 03:13:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-12 03:13:44,525 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2022-07-12 03:13:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:44,526 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-12 03:13:44,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:44,526 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-12 03:13:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 03:13:44,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:44,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:44,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 03:13:44,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:44,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash -925102245, now seen corresponding path program 1 times [2022-07-12 03:13:44,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:44,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182061225] [2022-07-12 03:13:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:44,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:44,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:44,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:44,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 03:13:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:44,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 03:13:44,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:44,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:44,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182061225] [2022-07-12 03:13:44,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182061225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:44,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:44,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:13:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652337199] [2022-07-12 03:13:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:44,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:13:44,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:13:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:44,843 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:44,889 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-07-12 03:13:44,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:13:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-12 03:13:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:44,891 INFO L225 Difference]: With dead ends: 33 [2022-07-12 03:13:44,892 INFO L226 Difference]: Without dead ends: 28 [2022-07-12 03:13:44,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:44,894 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:44,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-12 03:13:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-12 03:13:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-12 03:13:44,907 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 15 [2022-07-12 03:13:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:44,908 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-12 03:13:44,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-12 03:13:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 03:13:44,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:44,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:44,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 03:13:45,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:45,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1962795417, now seen corresponding path program 1 times [2022-07-12 03:13:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:45,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783506471] [2022-07-12 03:13:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:45,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:45,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 03:13:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:45,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 03:13:45,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:45,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:45,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:45,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783506471] [2022-07-12 03:13:45,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783506471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:45,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:45,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:13:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184437120] [2022-07-12 03:13:45,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:13:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:13:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:45,175 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:45,215 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-07-12 03:13:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:13:45,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-12 03:13:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:45,216 INFO L225 Difference]: With dead ends: 33 [2022-07-12 03:13:45,217 INFO L226 Difference]: Without dead ends: 28 [2022-07-12 03:13:45,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:45,222 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:45,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-12 03:13:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-12 03:13:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-12 03:13:45,233 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 16 [2022-07-12 03:13:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:45,234 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-12 03:13:45,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-12 03:13:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 03:13:45,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:45,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:45,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 03:13:45,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:45,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:45,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1417426806, now seen corresponding path program 1 times [2022-07-12 03:13:45,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:45,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893154283] [2022-07-12 03:13:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:45,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:45,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:45,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:45,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 03:13:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:45,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 03:13:45,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:13:45,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:45,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:45,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893154283] [2022-07-12 03:13:45,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893154283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:45,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:45,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 03:13:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173603257] [2022-07-12 03:13:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 03:13:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 03:13:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:13:45,612 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:45,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:45,649 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-07-12 03:13:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:13:45,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-12 03:13:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:45,650 INFO L225 Difference]: With dead ends: 35 [2022-07-12 03:13:45,651 INFO L226 Difference]: Without dead ends: 30 [2022-07-12 03:13:45,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:13:45,652 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:45,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 110 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-07-12 03:13:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-12 03:13:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2022-07-12 03:13:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:13:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-07-12 03:13:45,658 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 17 [2022-07-12 03:13:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:45,658 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-07-12 03:13:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:13:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-07-12 03:13:45,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 03:13:45,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:45,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:45,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-12 03:13:45,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:45,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash 642927512, now seen corresponding path program 1 times [2022-07-12 03:13:45,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:45,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676701163] [2022-07-12 03:13:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:45,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:45,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:45,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 03:13:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:45,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 03:13:45,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:13:45,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:45,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:45,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676701163] [2022-07-12 03:13:45,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676701163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:45,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:45,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:13:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569281608] [2022-07-12 03:13:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:45,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:13:45,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:45,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:13:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:45,964 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:45,982 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2022-07-12 03:13:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:13:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-07-12 03:13:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:45,984 INFO L225 Difference]: With dead ends: 30 [2022-07-12 03:13:45,984 INFO L226 Difference]: Without dead ends: 25 [2022-07-12 03:13:45,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:45,984 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:45,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-12 03:13:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-12 03:13:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-07-12 03:13:45,988 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 22 [2022-07-12 03:13:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:45,988 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-07-12 03:13:45,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-07-12 03:13:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-12 03:13:45,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:45,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:45,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-12 03:13:46,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:46,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1233179256, now seen corresponding path program 1 times [2022-07-12 03:13:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:46,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374207111] [2022-07-12 03:13:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:46,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:46,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:46,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:46,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 03:13:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:46,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 03:13:46,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:13:46,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:46,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:46,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374207111] [2022-07-12 03:13:46,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374207111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:46,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:46,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:13:46,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321824923] [2022-07-12 03:13:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:46,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:13:46,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:46,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:13:46,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:46,299 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:46,336 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-07-12 03:13:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:13:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-07-12 03:13:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:46,338 INFO L225 Difference]: With dead ends: 33 [2022-07-12 03:13:46,338 INFO L226 Difference]: Without dead ends: 28 [2022-07-12 03:13:46,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:46,339 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:46,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-12 03:13:46,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-12 03:13:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-07-12 03:13:46,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 23 [2022-07-12 03:13:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:46,344 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-07-12 03:13:46,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-07-12 03:13:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 03:13:46,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:46,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:46,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 03:13:46,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:46,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:46,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:46,548 INFO L85 PathProgramCache]: Analyzing trace with hash 977434878, now seen corresponding path program 1 times [2022-07-12 03:13:46,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:46,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126788480] [2022-07-12 03:13:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:46,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:46,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:46,550 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:46,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 03:13:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:46,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 03:13:46,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 03:13:46,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:46,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:46,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126788480] [2022-07-12 03:13:46,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126788480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:46,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:46,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:13:46,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300590654] [2022-07-12 03:13:46,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:46,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:13:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:13:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:13:46,640 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:46,647 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-07-12 03:13:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:13:46,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-12 03:13:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:46,649 INFO L225 Difference]: With dead ends: 36 [2022-07-12 03:13:46,649 INFO L226 Difference]: Without dead ends: 30 [2022-07-12 03:13:46,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:13:46,652 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:46,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-07-12 03:13:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-12 03:13:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-07-12 03:13:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 03:13:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-07-12 03:13:46,659 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 24 [2022-07-12 03:13:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:46,659 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-07-12 03:13:46,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-07-12 03:13:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 03:13:46,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:46,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:46,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 03:13:46,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:46,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:46,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1034693180, now seen corresponding path program 1 times [2022-07-12 03:13:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:46,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929658510] [2022-07-12 03:13:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:46,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:46,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:46,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:46,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 03:13:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:46,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 03:13:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 03:13:47,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:47,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:47,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929658510] [2022-07-12 03:13:47,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929658510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:47,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:47,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 03:13:47,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342784378] [2022-07-12 03:13:47,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:47,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 03:13:47,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:47,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 03:13:47,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:13:47,075 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:47,095 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-07-12 03:13:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 03:13:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-12 03:13:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:47,096 INFO L225 Difference]: With dead ends: 30 [2022-07-12 03:13:47,096 INFO L226 Difference]: Without dead ends: 22 [2022-07-12 03:13:47,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 03:13:47,097 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:47,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-07-12 03:13:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-12 03:13:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-12 03:13:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 03:13:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-12 03:13:47,100 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 24 [2022-07-12 03:13:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:47,100 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-12 03:13:47,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-12 03:13:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 03:13:47,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:47,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:47,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-12 03:13:47,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:47,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -881640172, now seen corresponding path program 1 times [2022-07-12 03:13:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:47,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502896305] [2022-07-12 03:13:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:47,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:47,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:47,308 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:47,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 03:13:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:47,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 03:13:47,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:13:47,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:47,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:47,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502896305] [2022-07-12 03:13:47,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502896305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:47,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:47,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:13:47,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062037064] [2022-07-12 03:13:47,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:47,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:13:47,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:47,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:13:47,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:47,372 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:47,389 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-12 03:13:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:13:47,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-12 03:13:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:47,390 INFO L225 Difference]: With dead ends: 30 [2022-07-12 03:13:47,390 INFO L226 Difference]: Without dead ends: 24 [2022-07-12 03:13:47,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:13:47,391 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:47,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:13:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-12 03:13:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-07-12 03:13:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 03:13:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-12 03:13:47,394 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 24 [2022-07-12 03:13:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:47,394 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-12 03:13:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-12 03:13:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 03:13:47,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:13:47,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:47,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 03:13:47,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:47,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:13:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:13:47,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1550253923, now seen corresponding path program 1 times [2022-07-12 03:13:47,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:13:47,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453807614] [2022-07-12 03:13:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:13:47,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:13:47,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:13:47,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:13:47,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 03:13:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:13:47,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 03:13:47,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:13:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 03:13:47,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:13:47,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:13:47,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453807614] [2022-07-12 03:13:47,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453807614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:13:47,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:13:47,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 03:13:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84245347] [2022-07-12 03:13:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:13:47,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 03:13:47,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:13:47,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 03:13:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:13:47,721 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:13:47,735 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-07-12 03:13:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:13:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-07-12 03:13:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:13:47,736 INFO L225 Difference]: With dead ends: 22 [2022-07-12 03:13:47,736 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 03:13:47,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:13:47,737 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:13:47,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 85 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-07-12 03:13:47,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 03:13:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 03:13:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:13:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 03:13:47,738 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-07-12 03:13:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:13:47,738 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 03:13:47,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 03:13:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 03:13:47,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 03:13:47,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:13:47,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-12 03:13:47,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:13:47,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 03:13:47,990 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L895 garLoopResultBuilder]: At program point L52-3(lines 44 53) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2022-07-12 03:13:47,991 INFO L902 garLoopResultBuilder]: At program point L71(lines 58 72) the Hoare annotation is: true [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 67) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~y#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 51) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_~y#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point L45-1(lines 45 47) no Hoare annotation was computed. [2022-07-12 03:13:47,991 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 69) no Hoare annotation was computed. [2022-07-12 03:13:47,992 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 21 42) no Hoare annotation was computed. [2022-07-12 03:13:47,992 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2022-07-12 03:13:47,992 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2022-07-12 03:13:47,992 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2022-07-12 03:13:47,992 INFO L902 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: true [2022-07-12 03:13:47,992 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2022-07-12 03:13:47,992 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 21 42) the Hoare annotation is: true [2022-07-12 03:13:47,992 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 21 42) no Hoare annotation was computed. [2022-07-12 03:13:47,992 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2022-07-12 03:13:47,994 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:13:47,995 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:13:48,003 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-12 03:13:48,004 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-12 03:13:48,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:13:48 BoogieIcfgContainer [2022-07-12 03:13:48,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:13:48,005 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:13:48,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:13:48,005 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:13:48,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:13:43" (3/4) ... [2022-07-12 03:13:48,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 03:13:48,012 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-07-12 03:13:48,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-12 03:13:48,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-12 03:13:48,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 03:13:48,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 03:13:48,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2022-07-12 03:13:48,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2022-07-12 03:13:48,037 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 03:13:48,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:13:48,038 INFO L158 Benchmark]: Toolchain (without parser) took 4913.85ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 39.7MB in the beginning and 35.8MB in the end (delta: 4.0MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2022-07-12 03:13:48,038 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:13:48,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.62ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 42.7MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 03:13:48,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.64ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:13:48,039 INFO L158 Benchmark]: Boogie Preprocessor took 46.56ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 39.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:13:48,039 INFO L158 Benchmark]: RCFGBuilder took 269.81ms. Allocated memory is still 60.8MB. Free memory was 39.7MB in the beginning and 29.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 03:13:48,039 INFO L158 Benchmark]: TraceAbstraction took 4258.91ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 43.2MB in the beginning and 38.6MB in the end (delta: 4.6MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-07-12 03:13:48,040 INFO L158 Benchmark]: Witness Printer took 32.45ms. Allocated memory is still 86.0MB. Free memory was 38.6MB in the beginning and 35.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 03:13:48,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.62ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 42.7MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.64ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.56ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 39.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.81ms. Allocated memory is still 60.8MB. Free memory was 39.7MB in the beginning and 29.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4258.91ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 43.2MB in the beginning and 38.6MB in the end (delta: 4.6MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Witness Printer took 32.45ms. Allocated memory is still 86.0MB. Free memory was 38.6MB in the beginning and 35.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 67]: 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 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 866 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 48 IncrementalHoareTripleChecker+Unchecked, 558 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 308 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 24 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 19 NumberOfFragments, 43 HoareAnnotationTreeSize, 11 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 206 ConstructedInterpolants, 20 QuantifiedInterpolants, 374 SizeOfPredicates, 32 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 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: 56]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 44]: Loop Invariant [2022-07-12 03:13:48,046 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-12 03:13:48,046 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-12 03:13:48,077 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