./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.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 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf ...................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.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 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 04:47:53,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 04:47:53,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 04:47:53,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 04:47:53,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 04:47:53,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 04:47:53,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 04:47:53,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 04:47:53,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 04:47:54,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 04:47:54,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 04:47:54,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 04:47:54,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 04:47:54,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 04:47:54,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 04:47:54,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 04:47:54,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 04:47:54,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 04:47:54,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 04:47:54,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 04:47:54,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 04:47:54,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 04:47:54,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 04:47:54,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 04:47:54,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 04:47:54,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 04:47:54,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 04:47:54,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 04:47:54,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 04:47:54,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 04:47:54,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 04:47:54,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 04:47:54,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 04:47:54,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 04:47:54,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 04:47:54,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 04:47:54,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 04:47:54,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 04:47:54,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 04:47:54,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 04:47:54,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 04:47:54,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 04:47:54,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 04:47:54,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 04:47:54,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 04:47:54,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 04:47:54,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 04:47:54,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 04:47:54,075 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 04:47:54,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 04:47:54,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 04:47:54,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 04:47:54,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 04:47:54,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 04:47:54,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 04:47:54,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 04:47:54,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 04:47:54,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 04:47:54,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 04:47:54,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 04:47:54,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 04:47:54,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 04:47:54,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 04:47:54,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 04:47:54,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:54,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 04:47:54,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 04:47:54,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 04:47:54,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 04:47:54,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 04:47:54,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 04:47:54,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 04:47:54,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf [2021-08-26 04:47:54,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 04:47:54,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 04:47:54,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 04:47:54,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 04:47:54,328 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 04:47:54,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2021-08-26 04:47:54,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2865705a/849b0aecbca54ecd83ec366af906aab3/FLAGfa1a6e6aa [2021-08-26 04:47:54,739 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 04:47:54,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2021-08-26 04:47:54,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2865705a/849b0aecbca54ecd83ec366af906aab3/FLAGfa1a6e6aa [2021-08-26 04:47:55,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2865705a/849b0aecbca54ecd83ec366af906aab3 [2021-08-26 04:47:55,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 04:47:55,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 04:47:55,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:55,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 04:47:55,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 04:47:55,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97082a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55, skipping insertion in model container [2021-08-26 04:47:55,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 04:47:55,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 04:47:55,276 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-08-26 04:47:55,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:55,294 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 04:47:55,301 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-08-26 04:47:55,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:55,315 INFO L208 MainTranslator]: Completed translation [2021-08-26 04:47:55,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55 WrapperNode [2021-08-26 04:47:55,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:55,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:55,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 04:47:55,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 04:47:55,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:55,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 04:47:55,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 04:47:55,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 04:47:55,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 04:47:55,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 04:47:55,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 04:47:55,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 04:47:55,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (1/1) ... [2021-08-26 04:47:55,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:55,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:55,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 04:47:55,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 04:47:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 04:47:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 04:47:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 04:47:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 04:47:55,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 04:47:55,679 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-26 04:47:55,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:55 BoogieIcfgContainer [2021-08-26 04:47:55,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 04:47:55,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 04:47:55,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 04:47:55,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 04:47:55,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:47:55" (1/3) ... [2021-08-26 04:47:55,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c69775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:55, skipping insertion in model container [2021-08-26 04:47:55,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:55" (2/3) ... [2021-08-26 04:47:55,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c69775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:55, skipping insertion in model container [2021-08-26 04:47:55,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:55" (3/3) ... [2021-08-26 04:47:55,691 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2021-08-26 04:47:55,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 04:47:55,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 04:47:55,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 04:47:55,743 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 04:47:55,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 04:47:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 30 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) [2021-08-26 04:47:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 04:47:55,759 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:55,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 04:47:55,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:55,765 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-08-26 04:47:55,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:55,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141126203] [2021-08-26 04:47:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:55,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:55,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:55,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112602522] [2021-08-26 04:47:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:55,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:55,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:55,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:55,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 04:47:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 04:47:55,945 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 04:47:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 04:47:55,992 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 04:47:55,993 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 04:47:55,994 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:55,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:55,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:55,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:55,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:55,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:56,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:56,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-26 04:47:56,213 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 04:47:56,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:47:56 BoogieIcfgContainer [2021-08-26 04:47:56,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 04:47:56,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 04:47:56,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 04:47:56,224 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 04:47:56,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:55" (3/4) ... [2021-08-26 04:47:56,226 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 04:47:56,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 04:47:56,228 INFO L168 Benchmark]: Toolchain (without parser) took 1054.53 ms. Allocated memory is still 73.4 MB. Free memory was 56.0 MB in the beginning and 44.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:56,228 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:56,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.99 ms. Allocated memory is still 73.4 MB. Free memory was 55.8 MB in the beginning and 45.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:56,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 73.4 MB. Free memory was 44.8 MB in the beginning and 55.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:56,229 INFO L168 Benchmark]: Boogie Preprocessor took 23.84 ms. Allocated memory is still 73.4 MB. Free memory was 55.9 MB in the beginning and 54.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:56,229 INFO L168 Benchmark]: RCFGBuilder took 296.17 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 40.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:56,230 INFO L168 Benchmark]: TraceAbstraction took 541.68 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 45.0 MB in the end (delta: -5.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:56,230 INFO L168 Benchmark]: Witness Printer took 2.53 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 44.7 MB in the end (delta: 371.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:56,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 142.99 ms. Allocated memory is still 73.4 MB. Free memory was 55.8 MB in the beginning and 45.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 73.4 MB. Free memory was 44.8 MB in the beginning and 55.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.84 ms. Allocated memory is still 73.4 MB. Free memory was 55.9 MB in the beginning and 54.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 296.17 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 40.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 541.68 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 45.0 MB in the end (delta: -5.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.53 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 44.7 MB in the end (delta: 371.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 [L32] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 478.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.8ms SsaConstructionTime, 13.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-08-26 04:47:56,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 04:47:57,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 04:47:57,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 04:47:57,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 04:47:57,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 04:47:57,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 04:47:57,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 04:47:57,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 04:47:57,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 04:47:57,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 04:47:57,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 04:47:57,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 04:47:57,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 04:47:57,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 04:47:57,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 04:47:57,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 04:47:57,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 04:47:57,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 04:47:57,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 04:47:57,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 04:47:57,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 04:47:57,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 04:47:57,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 04:47:57,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 04:47:57,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 04:47:57,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 04:47:57,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 04:47:57,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 04:47:57,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 04:47:57,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 04:47:57,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 04:47:57,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 04:47:57,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 04:47:57,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 04:47:57,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 04:47:57,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 04:47:57,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 04:47:57,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 04:47:57,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 04:47:57,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 04:47:57,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 04:47:57,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 04:47:57,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 04:47:57,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 04:47:57,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 04:47:57,905 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 04:47:57,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 04:47:57,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 04:47:57,907 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 04:47:57,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 04:47:57,907 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 04:47:57,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 04:47:57,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 04:47:57,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 04:47:57,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 04:47:57,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 04:47:57,909 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 04:47:57,909 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 04:47:57,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 04:47:57,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 04:47:57,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 04:47:57,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 04:47:57,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 04:47:57,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 04:47:57,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 04:47:57,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:57,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 04:47:57,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 04:47:57,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 04:47:57,916 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 04:47:57,916 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 04:47:57,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 04:47:57,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 04:47:57,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 04:47:57,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf [2021-08-26 04:47:58,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 04:47:58,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 04:47:58,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 04:47:58,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 04:47:58,175 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 04:47:58,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2021-08-26 04:47:58,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03802f858/a4cde3215f1b4dcbaf0ac9f31f04d086/FLAG536a49bd3 [2021-08-26 04:47:58,622 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 04:47:58,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2021-08-26 04:47:58,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03802f858/a4cde3215f1b4dcbaf0ac9f31f04d086/FLAG536a49bd3 [2021-08-26 04:47:58,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03802f858/a4cde3215f1b4dcbaf0ac9f31f04d086 [2021-08-26 04:47:58,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 04:47:58,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 04:47:58,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:58,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 04:47:58,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 04:47:58,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cdb2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58, skipping insertion in model container [2021-08-26 04:47:58,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 04:47:58,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 04:47:58,797 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-08-26 04:47:58,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:58,835 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 04:47:58,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-08-26 04:47:58,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:58,895 INFO L208 MainTranslator]: Completed translation [2021-08-26 04:47:58,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58 WrapperNode [2021-08-26 04:47:58,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:58,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:58,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 04:47:58,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 04:47:58,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:58,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 04:47:58,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 04:47:58,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 04:47:58,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 04:47:58,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 04:47:58,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 04:47:58,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 04:47:58,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (1/1) ... [2021-08-26 04:47:58,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:58,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:58,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 04:47:59,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 04:47:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 04:47:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 04:47:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 04:47:59,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 04:48:09,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 04:48:09,633 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-26 04:48:09,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:48:09 BoogieIcfgContainer [2021-08-26 04:48:09,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 04:48:09,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 04:48:09,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 04:48:09,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 04:48:09,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:47:58" (1/3) ... [2021-08-26 04:48:09,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6b1b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:48:09, skipping insertion in model container [2021-08-26 04:48:09,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:58" (2/3) ... [2021-08-26 04:48:09,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6b1b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:48:09, skipping insertion in model container [2021-08-26 04:48:09,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:48:09" (3/3) ... [2021-08-26 04:48:09,639 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2021-08-26 04:48:09,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 04:48:09,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 04:48:09,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 04:48:09,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 04:48:09,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 04:48:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 30 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) [2021-08-26 04:48:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 04:48:09,683 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:09,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 04:48:09,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:48:09,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:09,687 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-08-26 04:48:09,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 04:48:09,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741359112] [2021-08-26 04:48:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:09,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 04:48:09,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 04:48:09,695 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) [2021-08-26 04:48:09,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 04:48:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:48:09,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 04:48:09,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:48:10,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 04:48:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:48:14,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 04:48:14,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741359112] [2021-08-26 04:48:14,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741359112] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 04:48:14,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:48:14,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-26 04:48:14,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284909796] [2021-08-26 04:48:14,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:48:14,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 04:48:14,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:48:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:48:14,665 INFO L87 Difference]: Start difference. First operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 30 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) Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:42,845 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2021-08-26 04:48:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:48:42,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-26 04:48:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:42,850 INFO L225 Difference]: With dead ends: 63 [2021-08-26 04:48:42,851 INFO L226 Difference]: Without dead ends: 30 [2021-08-26 04:48:42,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3840.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:48:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-26 04:48:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-08-26 04:48:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-26 04:48:42,875 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2021-08-26 04:48:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:42,875 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-26 04:48:42,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-26 04:48:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 04:48:42,876 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:42,876 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:42,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-26 04:48:43,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 04:48:43,081 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:48:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2021-08-26 04:48:43,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 04:48:43,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535868444] [2021-08-26 04:48:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:43,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 04:48:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 04:48:43,083 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) [2021-08-26 04:48:43,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 04:48:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:48:43,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 04:48:43,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:48:45,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 04:48:52,184 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-08-26 04:48:54,240 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-08-26 04:49:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:49:10,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 04:49:10,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535868444] [2021-08-26 04:49:10,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535868444] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 04:49:10,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:49:10,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-08-26 04:49:10,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022396324] [2021-08-26 04:49:10,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:49:10,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 04:49:10,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:49:10,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-08-26 04:49:10,521 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:49:23,802 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-08-26 04:49:26,243 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-26 04:50:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:50:10,949 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-08-26 04:50:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:50:10,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 7 [2021-08-26 04:50:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:50:10,950 INFO L225 Difference]: With dead ends: 32 [2021-08-26 04:50:10,950 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 04:50:10,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 25878.2ms TimeCoverageRelationStatistics Valid=26, Invalid=54, Unknown=4, NotChecked=48, Total=132 [2021-08-26 04:50:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 04:50:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-08-26 04:50:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:50:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-08-26 04:50:10,954 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2021-08-26 04:50:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:50:10,954 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-08-26 04:50:10,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:50:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-08-26 04:50:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 04:50:10,955 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:50:10,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:50:10,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 04:50:11,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 04:50:11,156 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:50:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:50:11,157 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2021-08-26 04:50:11,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 04:50:11,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418010176] [2021-08-26 04:50:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:50:11,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 04:50:11,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 04:50:11,159 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) [2021-08-26 04:50:11,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 04:50:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 04:50:12,421 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 04:50:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 04:50:13,743 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-26 04:50:13,744 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 04:50:13,744 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:50:13,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:50:13,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:50:13,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:50:13,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:50:13,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:50:13,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 04:50:13,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 04:50:13,951 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 04:50:13,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:50:13 BoogieIcfgContainer [2021-08-26 04:50:13,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 04:50:13,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 04:50:13,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 04:50:13,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 04:50:13,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:48:09" (3/4) ... [2021-08-26 04:50:13,977 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 04:50:14,017 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 04:50:14,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 04:50:14,018 INFO L168 Benchmark]: Toolchain (without parser) took 135364.89 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.2 MB in the beginning and 37.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-08-26 04:50:14,019 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:50:14,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.12 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 43.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 04:50:14,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.73 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 41.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:50:14,020 INFO L168 Benchmark]: Boogie Preprocessor took 28.92 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 40.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:50:14,020 INFO L168 Benchmark]: RCFGBuilder took 10670.56 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.3 MB in the beginning and 52.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-08-26 04:50:14,021 INFO L168 Benchmark]: TraceAbstraction took 124338.65 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 39.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-08-26 04:50:14,025 INFO L168 Benchmark]: Witness Printer took 42.55 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 37.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:50:14,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.12 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 43.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.73 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 41.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.92 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 40.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10670.56 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.3 MB in the beginning and 52.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 124338.65 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 39.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 42.55 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 37.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 [L32] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 124282.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 88627.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 38 SDslu, 71 SDs, 0 SdLazy, 76 SolverSat, 17 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 72109.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 29719.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.0ms SsaConstructionTime, 2087.5ms SatisfiabilityAnalysisTime, 31476.7ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 209 SizeOfPredicates, 10 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be incorrect! [2021-08-26 04:50:14,264 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 [2021-08-26 04:50:14,288 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...