./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/double_req_bl_0920a.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 fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 07:38:04,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 07:38:04,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 07:38:04,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 07:38:04,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 07:38:04,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 07:38:04,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 07:38:04,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 07:38:04,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 07:38:04,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 07:38:04,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 07:38:04,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 07:38:04,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 07:38:04,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 07:38:04,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 07:38:04,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 07:38:04,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 07:38:04,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 07:38:04,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 07:38:04,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 07:38:04,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 07:38:04,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 07:38:04,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 07:38:04,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 07:38:04,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 07:38:04,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 07:38:04,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 07:38:04,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 07:38:04,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 07:38:04,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 07:38:04,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 07:38:04,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 07:38:04,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 07:38:04,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 07:38:04,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 07:38:04,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 07:38:04,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 07:38:04,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 07:38:04,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 07:38:04,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 07:38:04,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 07:38:04,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 07:38:04,139 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 07:38:04,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 07:38:04,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 07:38:04,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 07:38:04,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 07:38:04,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 07:38:04,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 07:38:04,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 07:38:04,141 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 07:38:04,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 07:38:04,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 07:38:04,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 07:38:04,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 07:38:04,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 07:38:04,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 07:38:04,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 07:38:04,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 07:38:04,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 07:38:04,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 07:38:04,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 07:38:04,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 07:38:04,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 07:38:04,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 07:38:04,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 07:38:04,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:38:04,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 07:38:04,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 07:38:04,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 07:38:04,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 07:38:04,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 07:38:04,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 07:38:04,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 07:38:04,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 07:38:04,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 07:38:04,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 [2021-12-17 07:38:04,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 07:38:04,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 07:38:04,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 07:38:04,375 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 07:38:04,376 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 07:38:04,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2021-12-17 07:38:04,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37d57936/05cf6e93e0924f8cbfaf4c191ac7f919/FLAG0b914077d [2021-12-17 07:38:04,780 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 07:38:04,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2021-12-17 07:38:04,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37d57936/05cf6e93e0924f8cbfaf4c191ac7f919/FLAG0b914077d [2021-12-17 07:38:04,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37d57936/05cf6e93e0924f8cbfaf4c191ac7f919 [2021-12-17 07:38:04,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 07:38:04,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 07:38:04,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 07:38:04,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 07:38:04,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 07:38:04,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:38:04" (1/1) ... [2021-12-17 07:38:04,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502ebdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:04, skipping insertion in model container [2021-12-17 07:38:04,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:38:04" (1/1) ... [2021-12-17 07:38:04,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 07:38:04,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 07:38:05,013 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/double_req_bl_0920a.c[4007,4020] [2021-12-17 07:38:05,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:38:05,029 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 07:38:05,081 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/double_req_bl_0920a.c[4007,4020] [2021-12-17 07:38:05,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:38:05,096 INFO L208 MainTranslator]: Completed translation [2021-12-17 07:38:05,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05 WrapperNode [2021-12-17 07:38:05,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 07:38:05,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 07:38:05,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 07:38:05,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 07:38:05,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,142 INFO L137 Inliner]: procedures = 19, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2021-12-17 07:38:05,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 07:38:05,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 07:38:05,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 07:38:05,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 07:38:05,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 07:38:05,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 07:38:05,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 07:38:05,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 07:38:05,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (1/1) ... [2021-12-17 07:38:05,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:38:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 07:38:05,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 07:38:05,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 07:38:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 07:38:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 07:38:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 07:38:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-17 07:38:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 07:38:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-17 07:38:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 07:38:05,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 07:38:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 07:38:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 07:38:05,316 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 07:38:05,317 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 07:38:05,491 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 07:38:05,495 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 07:38:05,495 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-17 07:38:05,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:38:05 BoogieIcfgContainer [2021-12-17 07:38:05,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 07:38:05,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 07:38:05,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 07:38:05,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 07:38:05,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:38:04" (1/3) ... [2021-12-17 07:38:05,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35611d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:38:05, skipping insertion in model container [2021-12-17 07:38:05,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:05" (2/3) ... [2021-12-17 07:38:05,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35611d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:38:05, skipping insertion in model container [2021-12-17 07:38:05,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:38:05" (3/3) ... [2021-12-17 07:38:05,506 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2021-12-17 07:38:05,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 07:38:05,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 07:38:05,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 07:38:05,575 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 07:38:05,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 07:38:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-17 07:38:05,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:05,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:05,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2021-12-17 07:38:05,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:38:05,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212254188] [2021-12-17 07:38:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:05,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:38:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:38:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:38:05,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 07:38:05,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212254188] [2021-12-17 07:38:05,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212254188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:38:05,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:38:05,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 07:38:05,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987686686] [2021-12-17 07:38:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:38:05,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 07:38:05,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 07:38:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 07:38:05,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 07:38:05,763 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:38:05,788 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2021-12-17 07:38:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 07:38:05,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-17 07:38:05,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:38:05,795 INFO L225 Difference]: With dead ends: 69 [2021-12-17 07:38:05,796 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:38:05,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 07:38:05,802 INFO L933 BasicCegarLoop]: 48 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, 48 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 [2021-12-17 07:38:05,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:38:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:38:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:38:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2021-12-17 07:38:05,830 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2021-12-17 07:38:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:38:05,830 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-12-17 07:38:05,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2021-12-17 07:38:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-17 07:38:05,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:05,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:05,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 07:38:05,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2021-12-17 07:38:05,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:38:05,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766651749] [2021-12-17 07:38:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:05,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:38:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:38:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:38:05,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 07:38:05,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766651749] [2021-12-17 07:38:05,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766651749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:38:05,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:38:05,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 07:38:05,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884830763] [2021-12-17 07:38:05,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:38:05,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 07:38:05,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 07:38:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 07:38:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:38:05,928 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:38:05,944 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2021-12-17 07:38:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 07:38:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-17 07:38:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:38:05,945 INFO L225 Difference]: With dead ends: 57 [2021-12-17 07:38:05,945 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:38:05,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:38:05,947 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:38:05,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:38:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:38:05,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:38:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-12-17 07:38:05,951 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2021-12-17 07:38:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:38:05,951 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-12-17 07:38:05,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-12-17 07:38:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-17 07:38:05,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:05,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:05,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 07:38:05,953 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2021-12-17 07:38:05,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:38:05,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211821115] [2021-12-17 07:38:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:05,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:38:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 07:38:06,060 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 07:38:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 07:38:06,129 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 07:38:06,130 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 07:38:06,130 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 07:38:06,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 07:38:06,134 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 07:38:06,136 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 07:38:06,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 07:38:06 BoogieIcfgContainer [2021-12-17 07:38:06,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 07:38:06,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 07:38:06,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 07:38:06,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 07:38:06,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:38:05" (3/4) ... [2021-12-17 07:38:06,180 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 07:38:06,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 07:38:06,181 INFO L158 Benchmark]: Toolchain (without parser) took 1374.50ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 73.6MB in the end (delta: 13.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-12-17 07:38:06,181 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:38:06,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.12ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 91.3MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 07:38:06,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.19ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:38:06,187 INFO L158 Benchmark]: Boogie Preprocessor took 32.46ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 87.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:38:06,188 INFO L158 Benchmark]: RCFGBuilder took 320.18ms. Allocated memory is still 117.4MB. Free memory was 87.6MB in the beginning and 74.1MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 07:38:06,189 INFO L158 Benchmark]: TraceAbstraction took 678.83ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 74.2MB in the end (delta: -610.8kB). Peak memory consumption was 792.8kB. Max. memory is 16.1GB. [2021-12-17 07:38:06,189 INFO L158 Benchmark]: Witness Printer took 2.55ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 73.6MB in the end (delta: 604.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:38:06,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.12ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 91.3MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.19ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.46ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 87.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 320.18ms. Allocated memory is still 117.4MB. Free memory was 87.6MB in the beginning and 74.1MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 678.83ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 74.2MB in the end (delta: -610.8kB). Peak memory consumption was 792.8kB. Max. memory is 16.1GB. * Witness Printer took 2.55ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 73.6MB in the end (delta: 604.3kB). 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: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 139, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L150] CALL, EXPR isfinite_double(x) [L129] __int32_t hx; VAL [\old(x)=9223372036853727235, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=9223372036853727235, zero=0] [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372036853727235, \result=-1, hx=-2, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=9223372036853727235, zero=0] [L150] RET, EXPR isfinite_double(x) [L150] EXPR x < 0 && isfinite_double(x) VAL [isfinite_double(x)=-1, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=9223372036853727235, x < 0 && isfinite_double(x)=1, zero=0] [L150] COND TRUE (x < 0 && isfinite_double(x)) [L152] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [\old(x)=9223372036853727235, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=9223372036853727235, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [\old(x)=9223372036853727235, hx=2146435072, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=4293918721, two54_log=18014398509481984, x=9223372036853727235, zero=0] [L60] COND FALSE !(hx < 0x00100000) VAL [\old(x)=9223372036853727235, hx=2146435072, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=4293918721, two54_log=18014398509481984, x=9223372036853727235, zero=0] [L73] COND TRUE hx >= 0x7ff00000 [L74] return x + x; VAL [\old(x)=9223372036853727235, hx=2146435072, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=4293918721, two54_log=18014398509481984, x=9223372036853727235, zero=0] [L152] RET, EXPR __ieee754_log(x) [L152] double res = __ieee754_log(x); [L155] CALL, EXPR isnan_double(res) [L139] return x != x; VAL [\old(x)=9223372036853727236, \result=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=9223372036853727236, zero=0] [L155] RET, EXPR isnan_double(res) [L155] COND TRUE !isnan_double(res) [L156] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=9223372036853727236, two54_log=18014398509481984, x=9223372036853727235, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 91 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-17 07:38:06,226 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/double_req_bl_0920a.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 fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 07:38:08,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 07:38:08,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 07:38:08,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 07:38:08,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 07:38:08,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 07:38:08,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 07:38:08,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 07:38:08,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 07:38:08,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 07:38:08,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 07:38:08,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 07:38:08,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 07:38:08,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 07:38:08,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 07:38:08,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 07:38:08,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 07:38:08,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 07:38:08,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 07:38:08,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 07:38:08,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 07:38:08,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 07:38:08,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 07:38:08,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 07:38:08,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 07:38:08,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 07:38:08,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 07:38:08,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 07:38:08,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 07:38:08,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 07:38:08,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 07:38:08,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 07:38:08,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 07:38:08,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 07:38:08,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 07:38:08,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 07:38:08,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 07:38:08,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 07:38:08,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 07:38:08,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 07:38:08,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 07:38:08,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 07:38:08,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 07:38:08,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 07:38:08,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 07:38:08,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 07:38:08,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 07:38:08,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 07:38:08,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 07:38:08,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 07:38:08,355 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 07:38:08,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 07:38:08,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 07:38:08,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 07:38:08,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 07:38:08,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 07:38:08,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 07:38:08,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 07:38:08,357 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 07:38:08,357 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 07:38:08,357 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 07:38:08,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 07:38:08,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 07:38:08,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 07:38:08,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 07:38:08,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 07:38:08,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 07:38:08,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 07:38:08,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:38:08,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 07:38:08,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 07:38:08,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 07:38:08,359 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 07:38:08,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 07:38:08,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 07:38:08,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 07:38:08,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 07:38:08,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 07:38:08,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 07:38:08,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 [2021-12-17 07:38:08,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 07:38:08,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 07:38:08,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 07:38:08,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 07:38:08,635 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 07:38:08,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2021-12-17 07:38:08,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e03f59b/2399a7c063dd43fb90e21cd3112a9fb2/FLAG55c9b8546 [2021-12-17 07:38:09,025 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 07:38:09,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2021-12-17 07:38:09,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e03f59b/2399a7c063dd43fb90e21cd3112a9fb2/FLAG55c9b8546 [2021-12-17 07:38:09,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e03f59b/2399a7c063dd43fb90e21cd3112a9fb2 [2021-12-17 07:38:09,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 07:38:09,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 07:38:09,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 07:38:09,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 07:38:09,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 07:38:09,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef28033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09, skipping insertion in model container [2021-12-17 07:38:09,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 07:38:09,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 07:38:09,654 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/double_req_bl_0920a.c[4007,4020] [2021-12-17 07:38:09,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:38:09,674 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 07:38:09,732 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/double_req_bl_0920a.c[4007,4020] [2021-12-17 07:38:09,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:38:09,772 INFO L208 MainTranslator]: Completed translation [2021-12-17 07:38:09,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09 WrapperNode [2021-12-17 07:38:09,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 07:38:09,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 07:38:09,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 07:38:09,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 07:38:09,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,833 INFO L137 Inliner]: procedures = 22, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2021-12-17 07:38:09,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 07:38:09,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 07:38:09,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 07:38:09,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 07:38:09,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 07:38:09,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 07:38:09,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 07:38:09,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 07:38:09,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (1/1) ... [2021-12-17 07:38:09,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:38:09,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 07:38:09,920 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) [2021-12-17 07:38:09,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 07:38:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 07:38:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-17 07:38:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-17 07:38:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 07:38:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 07:38:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-17 07:38:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 07:38:09,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 07:38:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-17 07:38:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 07:38:10,027 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 07:38:10,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 07:38:32,062 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 07:38:32,066 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 07:38:32,069 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-17 07:38:32,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:38:32 BoogieIcfgContainer [2021-12-17 07:38:32,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 07:38:32,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 07:38:32,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 07:38:32,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 07:38:32,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:38:09" (1/3) ... [2021-12-17 07:38:32,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d56a35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:38:32, skipping insertion in model container [2021-12-17 07:38:32,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:38:09" (2/3) ... [2021-12-17 07:38:32,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d56a35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:38:32, skipping insertion in model container [2021-12-17 07:38:32,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:38:32" (3/3) ... [2021-12-17 07:38:32,076 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2021-12-17 07:38:32,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 07:38:32,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 07:38:32,122 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 07:38:32,130 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 07:38:32,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 07:38:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-17 07:38:32,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:32,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:32,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2021-12-17 07:38:32,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:38:32,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762704834] [2021-12-17 07:38:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:32,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:38:32,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:38:32,177 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) [2021-12-17 07:38:32,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 07:38:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:38:32,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 07:38:32,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:38:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:38:32,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:38:32,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:38:32,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762704834] [2021-12-17 07:38:32,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762704834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:38:32,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:38:32,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 07:38:32,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983630678] [2021-12-17 07:38:32,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:38:32,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 07:38:32,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:38:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 07:38:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 07:38:32,537 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:38:32,553 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2021-12-17 07:38:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 07:38:32,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-17 07:38:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:38:32,561 INFO L225 Difference]: With dead ends: 69 [2021-12-17 07:38:32,562 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:38:32,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 07:38:32,567 INFO L933 BasicCegarLoop]: 48 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, 48 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 [2021-12-17 07:38:32,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:38:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:38:32,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:38:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2021-12-17 07:38:32,592 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2021-12-17 07:38:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:38:32,593 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-12-17 07:38:32,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2021-12-17 07:38:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-17 07:38:32,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:32,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:32,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-17 07:38:32,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:38:32,805 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2021-12-17 07:38:32,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:38:32,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330214125] [2021-12-17 07:38:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:32,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:38:32,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:38:32,811 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) [2021-12-17 07:38:32,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 07:38:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:38:32,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 07:38:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:38:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:38:33,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:38:33,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:38:33,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330214125] [2021-12-17 07:38:33,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330214125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:38:33,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:38:33,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 07:38:33,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385656366] [2021-12-17 07:38:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:38:33,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 07:38:33,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:38:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 07:38:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:38:33,253 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:38:33,394 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2021-12-17 07:38:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 07:38:33,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-17 07:38:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:38:33,399 INFO L225 Difference]: With dead ends: 57 [2021-12-17 07:38:33,399 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:38:33,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:38:33,400 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 07:38:33,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 07:38:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:38:33,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:38:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-12-17 07:38:33,404 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2021-12-17 07:38:33,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:38:33,404 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-12-17 07:38:33,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-12-17 07:38:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-17 07:38:33,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:33,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:33,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 07:38:33,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:38:33,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:33,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2021-12-17 07:38:33,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:38:33,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585702122] [2021-12-17 07:38:33,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:33,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:38:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:38:33,617 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) [2021-12-17 07:38:33,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-17 07:38:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:38:33,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 07:38:33,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:38:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:38:36,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:38:36,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:38:36,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585702122] [2021-12-17 07:38:36,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585702122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:38:36,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:38:36,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:38:36,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975253578] [2021-12-17 07:38:36,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:38:36,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:38:36,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:38:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:38:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:38:36,147 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:38:36,151 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2021-12-17 07:38:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 07:38:36,152 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-17 07:38:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:38:36,152 INFO L225 Difference]: With dead ends: 48 [2021-12-17 07:38:36,152 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:38:36,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:38:36,153 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:38:36,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2021-12-17 07:38:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:38:36,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:38:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-17 07:38:36,156 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2021-12-17 07:38:36,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:38:36,157 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-17 07:38:36,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-17 07:38:36,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-17 07:38:36,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:36,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:36,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-17 07:38:36,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:38:36,367 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:36,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash -677236169, now seen corresponding path program 1 times [2021-12-17 07:38:36,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:38:36,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484173513] [2021-12-17 07:38:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:36,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:38:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:38:36,369 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) [2021-12-17 07:38:36,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-17 07:38:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:38:37,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-17 07:38:37,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:38:38,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-17 07:38:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:38:40,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:38:40,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:38:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484173513] [2021-12-17 07:38:40,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484173513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:38:40,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:38:40,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:38:40,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664452514] [2021-12-17 07:38:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:38:40,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:38:40,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:38:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:38:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:38:40,228 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:38:40,231 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-12-17 07:38:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 07:38:40,231 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-17 07:38:40,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:38:40,232 INFO L225 Difference]: With dead ends: 37 [2021-12-17 07:38:40,232 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:38:40,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:38:40,233 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:38:40,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2021-12-17 07:38:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:38:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:38:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-12-17 07:38:40,245 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2021-12-17 07:38:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:38:40,246 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-12-17 07:38:40,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-12-17 07:38:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 07:38:40,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:38:40,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:38:40,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-17 07:38:40,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:38:40,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:38:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:38:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash 471217663, now seen corresponding path program 1 times [2021-12-17 07:38:40,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:38:40,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118891624] [2021-12-17 07:38:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:38:40,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:38:40,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:38:40,464 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) [2021-12-17 07:38:40,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-17 07:38:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:38:41,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 07:38:41,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:38:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:38:44,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:38:44,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:38:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118891624] [2021-12-17 07:38:44,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118891624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:38:44,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:38:44,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 07:38:44,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784138624] [2021-12-17 07:38:44,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:38:44,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:38:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:38:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:38:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:38:44,167 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:38:45,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:38:48,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:38:52,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:38:55,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:38:57,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:39:00,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:39:02,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:39:05,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:39:07,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:39:10,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:39:12,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:39:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:39:12,505 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-12-17 07:39:12,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 07:39:12,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-17 07:39:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:39:12,604 INFO L225 Difference]: With dead ends: 37 [2021-12-17 07:39:12,605 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:39:12,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-17 07:39:12,606 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-12-17 07:39:12,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 139 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 10 Unknown, 13 Unchecked, 27.3s Time] [2021-12-17 07:39:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:39:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:39:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:39:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-12-17 07:39:12,610 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 18 [2021-12-17 07:39:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:39:12,611 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-12-17 07:39:12,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:39:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-12-17 07:39:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-17 07:39:12,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:39:12,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:39:12,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-17 07:39:12,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:39:12,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:39:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:39:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash 952265799, now seen corresponding path program 1 times [2021-12-17 07:39:12,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:39:12,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567601812] [2021-12-17 07:39:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:39:12,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:39:12,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:39:12,833 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) [2021-12-17 07:39:12,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-17 07:39:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:39:13,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 07:39:13,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:39:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:39:16,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:39:16,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:39:16,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567601812] [2021-12-17 07:39:16,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567601812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:39:16,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:39:16,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:39:16,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820365992] [2021-12-17 07:39:16,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:39:16,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:39:16,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:39:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:39:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:39:16,815 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:39:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:39:16,816 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-12-17 07:39:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 07:39:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-17 07:39:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:39:16,817 INFO L225 Difference]: With dead ends: 32 [2021-12-17 07:39:16,817 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 07:39:16,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:39:16,818 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:39:16,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2021-12-17 07:39:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 07:39:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 07:39:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:39:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 07:39:16,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-12-17 07:39:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:39:16,819 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 07:39:16,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 07:39:16,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 07:39:16,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 07:39:16,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 07:39:16,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-17 07:39:17,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:39:17,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 07:39:18,179 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 72) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L60-1(lines 47 126) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 52 57) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L854 garLoopResultBuilder]: At program point L52-2(lines 52 57) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ~zero~0 (_ +zero 11 53)) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start___ieee754_log_~x#1| ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))))) [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L52-3(lines 52 57) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L854 garLoopResultBuilder]: At program point L135(lines 128 136) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ~zero~0 (_ +zero 11 53)) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))))) [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L61(lines 61 62) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L86(lines 86 102) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L78-1(lines 78 83) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L854 garLoopResultBuilder]: At program point L78-2(lines 78 83) the Hoare annotation is: false [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L78-3(lines 78 83) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L861 garLoopResultBuilder]: At program point L161(lines 141 162) the Hoare annotation is: true [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L87(lines 87 94) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L96(lines 96 101) no Hoare annotation was computed. [2021-12-17 07:39:18,180 INFO L858 garLoopResultBuilder]: For program point L63(lines 63 64) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L121(lines 121 124) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L88(lines 88 93) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L113(lines 113 125) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 130 134) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L854 garLoopResultBuilder]: At program point L130-2(lines 130 134) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ~zero~0 (_ +zero 11 53)) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))))) [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L130-3(lines 130 134) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L155(lines 155 158) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L854 garLoopResultBuilder]: At program point L139(line 139) the Hoare annotation is: (= |ULTIMATE.start_isnan_double_#res#1| (_ bv1 32)) [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L115(lines 115 119) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L854 garLoopResultBuilder]: At program point L124(lines 47 126) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((|ULTIMATE.start___ieee754_log_~x#1| (_ FloatingPoint 11 53))) (= |ULTIMATE.start___ieee754_log_#res#1| (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start___ieee754_log_~x#1| |ULTIMATE.start___ieee754_log_~x#1|) (_ +zero 11 53)))) (= ~zero~0 (_ +zero 11 53))) [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 67 71) no Hoare annotation was computed. [2021-12-17 07:39:18,181 INFO L854 garLoopResultBuilder]: At program point L67-2(lines 67 71) the Hoare annotation is: false [2021-12-17 07:39:18,181 INFO L858 garLoopResultBuilder]: For program point L150(line 150) no Hoare annotation was computed. [2021-12-17 07:39:18,182 INFO L858 garLoopResultBuilder]: For program point L150-2(lines 150 159) no Hoare annotation was computed. [2021-12-17 07:39:18,182 INFO L858 garLoopResultBuilder]: For program point L150-4(lines 150 159) no Hoare annotation was computed. [2021-12-17 07:39:18,191 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-17 07:39:18,193 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 07:39:18,206 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,210 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,213 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,213 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,213 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,213 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,214 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,214 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,214 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,214 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] [2021-12-17 07:39:18,215 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] [2021-12-17 07:39:18,216 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,216 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,216 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] [2021-12-17 07:39:18,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] [2021-12-17 07:39:18,216 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,217 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,217 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 07:39:18 BoogieIcfgContainer [2021-12-17 07:39:18,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 07:39:18,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 07:39:18,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 07:39:18,218 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 07:39:18,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:38:32" (3/4) ... [2021-12-17 07:39:18,221 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 07:39:18,231 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-12-17 07:39:18,234 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-17 07:39:18,234 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 07:39:18,236 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 07:39:18,257 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && zero == ~Pluszero~LONGDOUBLE()) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~DOUBLE(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 0bv32))) [2021-12-17 07:39:18,258 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && zero == ~Pluszero~LONGDOUBLE()) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~DOUBLE(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 0bv32))) [2021-12-17 07:39:18,258 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && zero == ~Pluszero~LONGDOUBLE()) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~DOUBLE(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 0bv32))) [2021-12-17 07:39:18,258 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start___ieee754_log_~x#1 : C_DOUBLE :: \result == ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.sub~DOUBLE(~roundNearestTiesToEven, ULTIMATE.start___ieee754_log_~x#1, ULTIMATE.start___ieee754_log_~x#1), ~Pluszero~LONGDOUBLE()))) && zero == ~Pluszero~LONGDOUBLE() [2021-12-17 07:39:18,259 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 1bv32 [2021-12-17 07:39:18,290 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 07:39:18,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 07:39:18,291 INFO L158 Benchmark]: Toolchain (without parser) took 68836.39ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.4MB in the beginning and 44.0MB in the end (delta: -12.7MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2021-12-17 07:39:18,291 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:39:18,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.48ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.2MB in the beginning and 47.7MB in the end (delta: -16.4MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-17 07:39:18,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.17ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 45.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:39:18,292 INFO L158 Benchmark]: Boogie Preprocessor took 49.87ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 43.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:39:18,293 INFO L158 Benchmark]: RCFGBuilder took 22185.08ms. Allocated memory is still 67.1MB. Free memory was 43.5MB in the beginning and 42.5MB in the end (delta: 1.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-12-17 07:39:18,293 INFO L158 Benchmark]: TraceAbstraction took 46146.04ms. Allocated memory is still 67.1MB. Free memory was 42.2MB in the beginning and 28.3MB in the end (delta: 13.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-12-17 07:39:18,294 INFO L158 Benchmark]: Witness Printer took 72.65ms. Allocated memory is still 67.1MB. Free memory was 28.3MB in the beginning and 44.0MB in the end (delta: -15.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:39:18,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.48ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.2MB in the beginning and 47.7MB in the end (delta: -16.4MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.17ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 45.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.87ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 43.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 22185.08ms. Allocated memory is still 67.1MB. Free memory was 43.5MB in the beginning and 42.5MB in the end (delta: 1.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 46146.04ms. Allocated memory is still 67.1MB. Free memory was 42.2MB in the beginning and 28.3MB in the end (delta: 13.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Witness Printer took 72.65ms. Allocated memory is still 67.1MB. Free memory was 28.3MB in the beginning and 44.0MB in the end (delta: -15.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 27.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 611 SdHoareTripleChecker+Invalid, 25.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 63 IncrementalHoareTripleChecker+Unchecked, 405 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 206 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 14 NumberOfFragments, 62 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 34 QuantifiedInterpolants, 536 SizeOfPredicates, 30 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant [2021-12-17 07:39:18,308 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,308 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,309 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,309 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && zero == ~Pluszero~LONGDOUBLE()) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~DOUBLE(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 0bv32))) - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 128]: Loop Invariant [2021-12-17 07:39:18,310 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,310 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && zero == ~Pluszero~LONGDOUBLE()) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~DOUBLE(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 0bv32))) - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: \result == 1bv32 - InvariantResult [Line: 47]: Loop Invariant [2021-12-17 07:39:18,324 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,324 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,324 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,325 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] [2021-12-17 07:39:18,325 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] [2021-12-17 07:39:18,325 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,325 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,325 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,325 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] [2021-12-17 07:39:18,326 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_log_~x#1,QUANTIFIED] Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start___ieee754_log_~x#1 : C_DOUBLE :: \result == ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.sub~DOUBLE(~roundNearestTiesToEven, ULTIMATE.start___ieee754_log_~x#1, ULTIMATE.start___ieee754_log_~x#1), ~Pluszero~LONGDOUBLE()))) && zero == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 130]: Loop Invariant [2021-12-17 07:39:18,327 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,327 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-17 07:39:18,330 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-17 07:39:18,330 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && zero == ~Pluszero~LONGDOUBLE()) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~DOUBLE(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 0bv32))) RESULT: Ultimate proved your program to be correct! [2021-12-17 07:39:18,536 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-12-17 07:39:18,584 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 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE