./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.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-scaling/freire2_valuebound50.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 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d ................................................................................................................................................................................................................................................................................................................. 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-scaling/freire2_valuebound50.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 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d ............................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:28:16,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:28:16,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:28:16,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:28:16,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:28:16,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:28:16,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:28:16,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:28:16,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:28:16,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:28:16,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:28:16,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:28:16,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:28:16,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:28:16,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:28:16,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:28:16,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:28:16,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:28:16,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:28:16,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:28:16,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:28:16,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:28:16,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:28:16,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:28:16,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:28:16,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:28:16,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:28:16,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:28:16,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:28:16,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:28:16,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:28:16,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:28:16,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:28:16,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:28:16,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:28:16,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:28:16,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:28:16,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:28:16,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:28:16,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:28:16,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:28:16,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:28:16,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:28:16,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:28:16,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:28:16,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:28:16,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:28:16,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:28:16,956 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:28:16,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:28:16,956 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:28:16,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:28:16,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:28:16,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:28:16,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:28:16,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:28:16,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:28:16,958 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:28:16,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:28:16,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:28:16,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:28:16,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:28:16,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:28:16,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:28:16,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:28:16,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:28:16,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:28:16,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:28:16,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:28:16,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:28:16,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:28:16,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:28:16,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d [2021-08-26 06:28:17,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:28:17,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:28:17,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:28:17,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:28:17,292 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:28:17,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-08-26 06:28:17,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70e6de73/03425adf75c34834b18d7f42cb8dbcf7/FLAGf03d6a527 [2021-08-26 06:28:17,762 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:28:17,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-08-26 06:28:17,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70e6de73/03425adf75c34834b18d7f42cb8dbcf7/FLAGf03d6a527 [2021-08-26 06:28:18,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70e6de73/03425adf75c34834b18d7f42cb8dbcf7 [2021-08-26 06:28:18,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:28:18,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:28:18,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:28:18,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:28:18,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:28:18,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cff6dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18, skipping insertion in model container [2021-08-26 06:28:18,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:28:18,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:28:18,311 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-scaling/freire2_valuebound50.c[709,722] [2021-08-26 06:28:18,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:28:18,332 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:28:18,347 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-scaling/freire2_valuebound50.c[709,722] [2021-08-26 06:28:18,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:28:18,394 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:28:18,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18 WrapperNode [2021-08-26 06:28:18,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:28:18,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:28:18,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:28:18,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:28:18,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:28:18,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:28:18,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:28:18,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:28:18,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:28:18,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:28:18,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:28:18,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:28:18,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (1/1) ... [2021-08-26 06:28:18,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:28:18,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:28:18,473 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 06:28:18,494 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 06:28:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:28:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:28:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:28:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:28:18,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:28:18,804 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 06:28:18,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:28:18 BoogieIcfgContainer [2021-08-26 06:28:18,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:28:18,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:28:18,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:28:18,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:28:18,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:28:18" (1/3) ... [2021-08-26 06:28:18,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371df8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:28:18, skipping insertion in model container [2021-08-26 06:28:18,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:18" (2/3) ... [2021-08-26 06:28:18,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371df8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:28:18, skipping insertion in model container [2021-08-26 06:28:18,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:28:18" (3/3) ... [2021-08-26 06:28:18,812 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound50.c [2021-08-26 06:28:18,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:28:18,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:28:18,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:28:18,875 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 06:28:18,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:28:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:28:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:28:18,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:28:18,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:28:18,896 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 06:28:18,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:28:18,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 06:28:18,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:28:18,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034904462] [2021-08-26 06:28:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:28:18,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:28:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:28:19,050 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 06:28:19,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:28:19,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034904462] [2021-08-26 06:28:19,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034904462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:28:19,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:28:19,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:28:19,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548447941] [2021-08-26 06:28:19,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:28:19,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:28:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:28:19,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:28:19,082 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 06:28:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:28:19,099 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-26 06:28:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:28:19,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 06:28:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:28:19,106 INFO L225 Difference]: With dead ends: 63 [2021-08-26 06:28:19,106 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 06:28:19,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:28:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 06:28:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 06:28:19,133 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 06:28:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-26 06:28:19,137 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-26 06:28:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:28:19,137 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-26 06:28:19,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 06:28:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-26 06:28:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:28:19,138 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:28:19,138 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:28:19,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:28:19,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:28:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:28:19,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 06:28:19,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:28:19,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340284939] [2021-08-26 06:28:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:28:19,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:28:19,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:28:19,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435640465] [2021-08-26 06:28:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:28:19,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:28:19,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:28:19,157 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 06:28:19,161 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 06:28:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:28:19,223 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:28:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:28:19,269 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 06:28:19,271 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:28:19,272 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:19,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:19,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:19,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:19,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:19,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:19,300 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 06:28:19,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:28:19,505 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:28:19,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:28:19 BoogieIcfgContainer [2021-08-26 06:28:19,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:28:19,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:28:19,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:28:19,520 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:28:19,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:28:18" (3/4) ... [2021-08-26 06:28:19,523 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 06:28:19,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:28:19,525 INFO L168 Benchmark]: Toolchain (without parser) took 1338.40 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.9 MB in the beginning and 37.7 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:28:19,525 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory is still 30.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:28:19,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.08 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 41.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:19,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.50 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:28:19,533 INFO L168 Benchmark]: Boogie Preprocessor took 16.91 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 38.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:19,533 INFO L168 Benchmark]: RCFGBuilder took 358.02 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 37.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:19,534 INFO L168 Benchmark]: TraceAbstraction took 712.10 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 38.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:19,535 INFO L168 Benchmark]: Witness Printer took 3.65 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 38.0 MB in the end (delta: 298.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:28:19,537 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 48.2 MB. Free memory is still 30.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 207.08 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 41.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.50 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.91 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 38.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 358.02 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 37.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 712.10 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 38.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.65 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 38.0 MB in the end (delta: 298.8 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 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] 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, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 637.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.3ms, AutomataDifference: 39.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.0ms SsaConstructionTime, 55.4ms SatisfiabilityAnalysisTime, 57.3ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 06:28:19,561 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 06:28:21,318 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 06:28:21,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:28:21,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:28:21,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:28:21,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:28:21,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:28:21,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:28:21,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:28:21,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:28:21,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:28:21,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:28:21,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:28:21,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 06:28:21,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:28:21,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:28:21,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:28:21,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:28:21,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:28:21,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:28:21,400 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:28:21,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:28:21,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:28:21,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:28:21,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:28:21,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:28:21,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:28:21,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:28:21,401 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 06:28:21,402 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 06:28:21,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:28:21,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:28:21,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:28:21,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:28:21,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:28:21,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:28:21,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:28:21,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:28:21,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:28:21,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:28:21,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:28:21,404 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 06:28:21,404 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 06:28:21,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:28:21,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:28:21,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 06:28:21,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d [2021-08-26 06:28:21,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:28:21,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:28:21,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:28:21,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:28:21,753 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:28:21,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-08-26 06:28:21,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fea7ad4/d7225c035b5d494f90da759c23924462/FLAGbd64759f3 [2021-08-26 06:28:22,244 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:28:22,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-08-26 06:28:22,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fea7ad4/d7225c035b5d494f90da759c23924462/FLAGbd64759f3 [2021-08-26 06:28:22,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fea7ad4/d7225c035b5d494f90da759c23924462 [2021-08-26 06:28:22,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:28:22,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:28:22,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:28:22,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:28:22,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:28:22,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50860a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22, skipping insertion in model container [2021-08-26 06:28:22,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:28:22,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:28:22,803 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-scaling/freire2_valuebound50.c[709,722] [2021-08-26 06:28:22,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:28:22,830 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:28:22,848 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-scaling/freire2_valuebound50.c[709,722] [2021-08-26 06:28:22,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:28:22,887 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:28:22,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22 WrapperNode [2021-08-26 06:28:22,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:28:22,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:28:22,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:28:22,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:28:22,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:28:22,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:28:22,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:28:22,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:28:22,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:28:22,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:28:22,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:28:22,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:28:22,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (1/1) ... [2021-08-26 06:28:22,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:28:22,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:28:22,967 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 06:28:22,970 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 06:28:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 06:28:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:28:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:28:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:28:34,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:28:34,152 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 06:28:34,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:28:34 BoogieIcfgContainer [2021-08-26 06:28:34,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:28:34,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:28:34,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:28:34,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:28:34,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:28:22" (1/3) ... [2021-08-26 06:28:34,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5346e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:28:34, skipping insertion in model container [2021-08-26 06:28:34,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:28:22" (2/3) ... [2021-08-26 06:28:34,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5346e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:28:34, skipping insertion in model container [2021-08-26 06:28:34,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:28:34" (3/3) ... [2021-08-26 06:28:34,162 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound50.c [2021-08-26 06:28:34,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:28:34,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:28:34,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:28:34,208 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 06:28:34,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:28:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:28:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:28:34,223 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:28:34,224 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:28:34,224 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 06:28:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:28:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 06:28:34,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:28:34,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957860271] [2021-08-26 06:28:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:28:34,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:28:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:28:34,254 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 06:28:34,255 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 06:28:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:28:34,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 06:28:34,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:28:34,445 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 06:28:34,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:28:34,496 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 06:28:34,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:28:34,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957860271] [2021-08-26 06:28:34,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957860271] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:28:34,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:28:34,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 06:28:34,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205836646] [2021-08-26 06:28:34,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:28:34,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:28:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:28:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:28:34,518 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 06:28:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:28:34,533 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-26 06:28:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:28:34,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 06:28:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:28:34,541 INFO L225 Difference]: With dead ends: 63 [2021-08-26 06:28:34,541 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 06:28:34,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:28:34,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 06:28:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 06:28:34,573 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 06:28:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-26 06:28:34,577 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-26 06:28:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:28:34,577 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-26 06:28:34,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 06:28:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-26 06:28:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:28:34,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:28:34,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:28:34,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:28:34,792 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 06:28:34,793 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:28:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:28:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 06:28:34,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:28:34,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527410430] [2021-08-26 06:28:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:28:34,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:28:34,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:28:34,797 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 06:28:34,799 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 06:28:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:28:34,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 06:28:34,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:28:35,309 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 06:28:35,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:28:39,940 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 06:28:39,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:28:39,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527410430] [2021-08-26 06:28:39,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527410430] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:28:39,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:28:39,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-26 06:28:39,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100153189] [2021-08-26 06:28:39,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:28:39,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:28:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:28:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:28:39,944 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:29:09,004 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-08-26 06:29:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 06:29:09,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-26 06:29:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:29:09,005 INFO L225 Difference]: With dead ends: 38 [2021-08-26 06:29:09,006 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 06:29:09,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4041.4ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:29:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 06:29:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2021-08-26 06:29:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 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 06:29:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-08-26 06:29:09,011 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-08-26 06:29:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:29:09,011 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-08-26 06:29:09,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:09,011 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-08-26 06:29:09,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:29:09,011 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:29:09,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:29:09,023 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 06:29:09,212 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 06:29:09,212 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:29:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:29:09,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-26 06:29:09,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:29:09,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424630481] [2021-08-26 06:29:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:09,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:29:09,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:29:09,223 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 06:29:09,241 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 06:29:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:29:09,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 06:29:09,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:29:11,766 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 06:29:11,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:29:17,996 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 06:29:20,035 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 06:29:47,023 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 06:29:47,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:29:47,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424630481] [2021-08-26 06:29:47,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424630481] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:29:47,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:29:47,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-08-26 06:29:47,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437642210] [2021-08-26 06:29:47,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 06:29:47,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:29:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 06:29:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-08-26 06:29:47,025 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:52,736 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse1 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv50 32))))) (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse0 (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse1) (not .cse0)) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (= (_ 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 ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) .cse1)) is different from true [2021-08-26 06:29:55,169 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 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) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv50 32)))) is different from true [2021-08-26 06:31:06,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:31:06,928 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-08-26 06:31:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 06:31:06,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 06:31:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:31:06,929 INFO L225 Difference]: With dead ends: 36 [2021-08-26 06:31:06,929 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 06:31:06,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 25334.1ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-08-26 06:31:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 06:31:06,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-08-26 06:31:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 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 06:31:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-08-26 06:31:06,935 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-08-26 06:31:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:31:06,935 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-08-26 06:31:06,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:31:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-08-26 06:31:06,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 06:31:06,936 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:31:06,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:31:06,954 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 06:31:07,148 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 06:31:07,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:31:07,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:31:07,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-26 06:31:07,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:31:07,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020117722] [2021-08-26 06:31:07,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:31:07,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:31:07,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:31:07,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 06:31:07,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 06:31:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:31:08,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:31:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:31:34,531 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-26 06:31:34,532 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:31:34,533 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:34,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:34,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:34,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:34,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:34,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:34,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-08-26 06:31:34,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 06:31:34,739 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:31:34,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:31:34 BoogieIcfgContainer [2021-08-26 06:31:34,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:31:34,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:31:34,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:31:34,759 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:31:34,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:28:34" (3/4) ... [2021-08-26 06:31:34,762 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 06:31:34,815 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:31:34,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:31:34,817 INFO L168 Benchmark]: Toolchain (without parser) took 192144.30 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 37.6 MB in the beginning and 33.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:31:34,817 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:31:34,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.65 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 41.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:31:34,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.65 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:31:34,819 INFO L168 Benchmark]: Boogie Preprocessor took 22.35 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 38.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:31:34,824 INFO L168 Benchmark]: RCFGBuilder took 11208.01 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 38.0 MB in the beginning and 52.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-08-26 06:31:34,824 INFO L168 Benchmark]: TraceAbstraction took 180602.14 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 35.0 MB in the end (delta: 16.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-08-26 06:31:34,824 INFO L168 Benchmark]: Witness Printer took 56.57 ms. Allocated memory is still 73.4 MB. Free memory was 35.0 MB in the beginning and 33.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:31:34,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 213.65 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 41.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.65 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.35 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 38.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11208.01 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 38.0 MB in the beginning and 52.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 180602.14 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 35.0 MB in the end (delta: 16.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * Witness Printer took 56.57 ms. Allocated memory is still 73.4 MB. Free memory was 35.0 MB in the beginning and 33.5 MB in the end (delta: 1.5 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() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] 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, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 180537.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 8.4ms, AutomataDifference: 109011.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 82 SDtfs, 27 SDslu, 149 SDs, 0 SdLazy, 107 SolverSat, 14 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 101479.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 29375.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.0ms SsaConstructionTime, 1887.0ms SatisfiabilityAnalysisTime, 42489.9ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-26 06:31:35,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...