./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.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_valuebound20.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 70232273db64c4ed6ec49f2ee7a39af483aa4593 ................................................................................................................................................................................................................................................................................................................ 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_valuebound20.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 70232273db64c4ed6ec49f2ee7a39af483aa4593 .............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:27:07,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:27:07,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:27:07,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:27:07,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:27:07,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:27:07,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:27:07,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:27:07,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:27:07,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:27:07,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:27:07,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:27:07,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:27:07,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:27:07,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:27:07,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:27:07,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:27:07,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:27:07,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:27:07,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:27:07,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:27:07,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:27:07,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:27:07,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:27:07,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:27:07,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:27:07,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:27:07,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:27:07,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:27:07,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:27:07,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:27:07,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:27:07,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:27:07,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:27:07,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:27:07,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:27:07,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:27:07,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:27:07,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:27:07,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:27:07,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:27:07,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:27:07,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:27:07,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:27:07,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:27:07,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:27:07,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:27:07,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:27:07,401 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:27:07,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:27:07,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:27:07,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:27:07,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:27:07,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:27:07,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:27:07,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:27:07,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:27:07,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:27:07,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:27:07,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:27:07,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:27:07,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:27:07,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:27:07,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:27:07,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:27:07,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:27:07,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:27:07,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:27:07,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:27:07,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:27:07,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:27:07,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:27:07,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70232273db64c4ed6ec49f2ee7a39af483aa4593 [2021-08-26 06:27:07,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:27:07,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:27:07,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:27:07,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:27:07,683 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:27:07,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-08-26 06:27:07,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b591b947a/e7cd22a619cd44b79d4fd1922a848096/FLAG8cc1aa5e6 [2021-08-26 06:27:08,115 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:27:08,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-08-26 06:27:08,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b591b947a/e7cd22a619cd44b79d4fd1922a848096/FLAG8cc1aa5e6 [2021-08-26 06:27:08,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b591b947a/e7cd22a619cd44b79d4fd1922a848096 [2021-08-26 06:27:08,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:27:08,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:27:08,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:27:08,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:27:08,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:27:08,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbc6ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08, skipping insertion in model container [2021-08-26 06:27:08,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:27:08,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:27:08,257 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_valuebound20.c[709,722] [2021-08-26 06:27:08,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:27:08,295 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:27:08,335 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_valuebound20.c[709,722] [2021-08-26 06:27:08,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:27:08,369 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:27:08,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08 WrapperNode [2021-08-26 06:27:08,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:27:08,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:27:08,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:27:08,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:27:08,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:27:08,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:27:08,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:27:08,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:27:08,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:27:08,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:27:08,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:27:08,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:27:08,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (1/1) ... [2021-08-26 06:27:08,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:27:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:27:08,474 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 06:27:08,496 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 06:27:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:27:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:27:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:27:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:27:08,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:27:08,766 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 06:27:08,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:27:08 BoogieIcfgContainer [2021-08-26 06:27:08,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:27:08,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:27:08,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:27:08,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:27:08,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:27:08" (1/3) ... [2021-08-26 06:27:08,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2cde1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:27:08, skipping insertion in model container [2021-08-26 06:27:08,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:08" (2/3) ... [2021-08-26 06:27:08,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2cde1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:27:08, skipping insertion in model container [2021-08-26 06:27:08,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:27:08" (3/3) ... [2021-08-26 06:27:08,773 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-08-26 06:27:08,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:27:08,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:27:08,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:27:08,825 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 06:27:08,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:27:08,834 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 06:27:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:27:08,838 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:27:08,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:27:08,839 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 06:27:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:27:08,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 06:27:08,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:27:08,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532315735] [2021-08-26 06:27:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:27:08,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:27:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:27:08,936 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 06:27:08,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:27:08,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532315735] [2021-08-26 06:27:08,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532315735] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:27:08,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:27:08,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:27:08,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003898941] [2021-08-26 06:27:08,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:27:08,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:27:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:27:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:27:08,953 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 06:27:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:27:08,963 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-26 06:27:08,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:27:08,964 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 06:27:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:27:08,969 INFO L225 Difference]: With dead ends: 63 [2021-08-26 06:27:08,969 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 06:27:08,970 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 06:27:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 06:27:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 06:27:08,989 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 06:27:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-26 06:27:08,990 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-26 06:27:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:27:08,991 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-26 06:27:08,991 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 06:27:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-26 06:27:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:27:08,995 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:27:08,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:27:08,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:27:08,996 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 06:27:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:27:08,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 06:27:08,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:27:08,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439256657] [2021-08-26 06:27:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:27:09,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:27:09,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:27:09,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739578848] [2021-08-26 06:27:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:27:09,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:27:09,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:27:09,032 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 06:27:09,047 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 06:27:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:27:09,085 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:27:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:27:09,118 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 06:27:09,118 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:27:09,119 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:27:09,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:27:09,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:27:09,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:27:09,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:27:09,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:27:09,143 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 06:27:09,328 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 06:27:09,344 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:27:09,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:27:09 BoogieIcfgContainer [2021-08-26 06:27:09,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:27:09,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:27:09,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:27:09,361 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:27:09,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:27:08" (3/4) ... [2021-08-26 06:27:09,364 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 06:27:09,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:27:09,367 INFO L168 Benchmark]: Toolchain (without parser) took 1229.66 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 39.6 MB in the beginning and 48.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-26 06:27:09,367 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 42.6 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:27:09,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.54 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 43.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:27:09,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:27:09,373 INFO L168 Benchmark]: Boogie Preprocessor took 30.42 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:27:09,373 INFO L168 Benchmark]: RCFGBuilder took 327.57 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.3 MB in the beginning and 57.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:27:09,374 INFO L168 Benchmark]: TraceAbstraction took 591.30 ms. Allocated memory is still 77.6 MB. Free memory was 57.2 MB in the beginning and 48.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:27:09,374 INFO L168 Benchmark]: Witness Printer took 3.97 ms. Allocated memory is still 77.6 MB. Free memory was 48.4 MB in the beginning and 48.0 MB in the end (delta: 427.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:27:09,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 42.6 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.54 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 43.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.42 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 327.57 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.3 MB in the beginning and 57.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 591.30 ms. Allocated memory is still 77.6 MB. Free memory was 57.2 MB in the beginning and 48.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.97 ms. Allocated memory is still 77.6 MB. Free memory was 48.4 MB in the beginning and 48.0 MB in the end (delta: 427.9 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: 523.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.4ms, AutomataDifference: 26.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, 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: 10.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.7ms SsaConstructionTime, 28.5ms SatisfiabilityAnalysisTime, 30.0ms 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 06:27:09,415 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 06:27:10,989 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 06:27:11,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:27:11,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:27:11,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:27:11,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:27:11,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:27:11,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:27:11,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:27:11,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:27:11,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:27:11,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:27:11,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:27:11,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 06:27:11,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:27:11,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:27:11,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:27:11,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:27:11,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:27:11,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:27:11,087 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:27:11,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:27:11,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:27:11,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:27:11,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:27:11,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:27:11,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:27:11,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:27:11,088 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 06:27:11,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 06:27:11,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:27:11,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:27:11,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:27:11,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:27:11,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:27:11,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:27:11,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:27:11,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:27:11,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:27:11,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:27:11,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:27:11,090 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 06:27:11,091 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 06:27:11,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:27:11,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:27:11,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 06:27:11,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70232273db64c4ed6ec49f2ee7a39af483aa4593 [2021-08-26 06:27:11,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:27:11,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:27:11,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:27:11,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:27:11,375 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:27:11,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-08-26 06:27:11,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359241473/0f686f3d646241a4ba7e58f38f63d9d5/FLAGc22fccb08 [2021-08-26 06:27:11,770 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:27:11,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-08-26 06:27:11,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359241473/0f686f3d646241a4ba7e58f38f63d9d5/FLAGc22fccb08 [2021-08-26 06:27:11,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359241473/0f686f3d646241a4ba7e58f38f63d9d5 [2021-08-26 06:27:11,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:27:11,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:27:11,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:27:11,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:27:11,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:27:11,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:27:11" (1/1) ... [2021-08-26 06:27:11,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f821c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:11, skipping insertion in model container [2021-08-26 06:27:11,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:27:11" (1/1) ... [2021-08-26 06:27:11,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:27:11,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:27:11,945 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_valuebound20.c[709,722] [2021-08-26 06:27:11,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:27:11,987 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:27:12,021 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_valuebound20.c[709,722] [2021-08-26 06:27:12,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:27:12,042 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:27:12,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12 WrapperNode [2021-08-26 06:27:12,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:27:12,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:27:12,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:27:12,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:27:12,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:27:12,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:27:12,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:27:12,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:27:12,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:27:12,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:27:12,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:27:12,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:27:12,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (1/1) ... [2021-08-26 06:27:12,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:27:12,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:27:12,133 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 06:27:12,139 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 06:27:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 06:27:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:27:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:27:12,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:27:24,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:27:24,058 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 06:27:24,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:27:24 BoogieIcfgContainer [2021-08-26 06:27:24,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:27:24,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:27:24,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:27:24,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:27:24,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:27:11" (1/3) ... [2021-08-26 06:27:24,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f115895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:27:24, skipping insertion in model container [2021-08-26 06:27:24,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:27:12" (2/3) ... [2021-08-26 06:27:24,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f115895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:27:24, skipping insertion in model container [2021-08-26 06:27:24,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:27:24" (3/3) ... [2021-08-26 06:27:24,064 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-08-26 06:27:24,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:27:24,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:27:24,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:27:24,097 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 06:27:24,098 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:27:24,105 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 06:27:24,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:27:24,108 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:27:24,109 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:27:24,109 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 06:27:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:27:24,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 06:27:24,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:27:24,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433406224] [2021-08-26 06:27:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:27:24,120 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:27:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:27:24,131 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 06:27:24,149 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 06:27:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:27:24,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 06:27:24,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:27:24,288 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 06:27:24,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:27:24,336 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 06:27:24,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:27:24,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433406224] [2021-08-26 06:27:24,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433406224] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:27:24,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:27:24,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 06:27:24,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814527340] [2021-08-26 06:27:24,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:27:24,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:27:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:27:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:27:24,352 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 06:27:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:27:24,362 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-26 06:27:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:27:24,363 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 06:27:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:27:24,367 INFO L225 Difference]: With dead ends: 63 [2021-08-26 06:27:24,368 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 06:27:24,370 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 06:27:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 06:27:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 06:27:24,387 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 06:27:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-26 06:27:24,388 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-26 06:27:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:27:24,388 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-26 06:27:24,388 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 06:27:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-26 06:27:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:27:24,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:27:24,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:27:24,404 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 06:27:24,589 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 06:27:24,590 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 06:27:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:27:24,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 06:27:24,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:27:24,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023606376] [2021-08-26 06:27:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:27:24,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:27:24,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:27:24,592 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 06:27:24,593 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 06:27:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:27:24,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 06:27:24,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:27:25,007 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 06:27:25,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:27:29,625 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 06:27:29,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:27:29,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023606376] [2021-08-26 06:27:29,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023606376] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:27:29,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:27:29,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-26 06:27:29,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704031896] [2021-08-26 06:27:29,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:27:29,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:27:29,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:27:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:27:29,628 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 06:27:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:27:56,836 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-08-26 06:27:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:27:56,836 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 06:27:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:27:56,837 INFO L225 Difference]: With dead ends: 34 [2021-08-26 06:27:56,837 INFO L226 Difference]: Without dead ends: 32 [2021-08-26 06:27:56,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3745.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-26 06:27:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-26 06:27:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-08-26 06:27:56,842 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 06:27:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-08-26 06:27:56,843 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-08-26 06:27:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:27:56,843 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-08-26 06:27:56,843 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 06:27:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-08-26 06:27:56,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:27:56,844 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:27:56,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:27:56,855 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 06:27:57,052 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 06:27:57,052 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 06:27:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:27:57,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-26 06:27:57,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:27:57,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029352000] [2021-08-26 06:27:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:27:57,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:27:57,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:27:57,055 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 06:27:57,057 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 06:27:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:27:57,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 06:27:57,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:27:59,412 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 06:27:59,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:28:04,903 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 06:28:06,955 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 06:28:36,026 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 06:28:36,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:28:36,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029352000] [2021-08-26 06:28:36,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029352000] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:28:36,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:28:36,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-08-26 06:28:36,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121253475] [2021-08-26 06:28:36,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 06:28:36,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:28:36,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 06:28:36,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-08-26 06:28:36,029 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 06:28:40,383 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32)))) (.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (and .cse0 (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse1 (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse1) (not .cse0))) (and .cse0 .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.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))) is different from true [2021-08-26 06:28:42,972 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32))) (= 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)) is different from true [2021-08-26 06:29:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:29:22,137 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-08-26 06:29:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 06:29:22,137 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 06:29:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:29:22,138 INFO L225 Difference]: With dead ends: 36 [2021-08-26 06:29:22,138 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 06:29:22,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 27344.0ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-08-26 06:29:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 06:29:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-08-26 06:29:22,141 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 06:29:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-08-26 06:29:22,142 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-08-26 06:29:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:29:22,142 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-08-26 06:29:22,142 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 06:29:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-08-26 06:29:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 06:29:22,142 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:29:22,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:29:22,160 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 06:29:22,343 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 06:29:22,343 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 06:29:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:29:22,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-26 06:29:22,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:29:22,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869435462] [2021-08-26 06:29:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:22,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:29:22,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:29:22,345 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 06:29:22,346 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 06:29:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:29:30,545 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:29:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:29:34,117 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-26 06:29:34,117 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:29:34,118 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 06:29:34,320 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 06:29:34,324 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:29:34,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:29:34 BoogieIcfgContainer [2021-08-26 06:29:34,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:29:34,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:29:34,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:29:34,337 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:29:34,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:27:24" (3/4) ... [2021-08-26 06:29:34,339 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 06:29:34,373 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:29:34,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:29:34,374 INFO L168 Benchmark]: Toolchain (without parser) took 142577.20 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 42.8 MB in the end (delta: -11.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:29:34,374 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:29:34,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.01 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.6 MB in the beginning and 49.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 47.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:29:34,375 INFO L168 Benchmark]: Boogie Preprocessor took 30.15 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 46.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:29:34,375 INFO L168 Benchmark]: RCFGBuilder took 11943.68 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 49.2 MB in the end (delta: -3.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,375 INFO L168 Benchmark]: TraceAbstraction took 130276.35 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 44.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,375 INFO L168 Benchmark]: Witness Printer took 35.72 ms. Allocated memory is still 67.1 MB. Free memory was 44.3 MB in the beginning and 42.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:29:34,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.01 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.6 MB in the beginning and 49.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 47.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.15 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 46.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11943.68 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 49.2 MB in the end (delta: -3.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 130276.35 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 44.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 35.72 ms. Allocated memory is still 67.1 MB. Free memory was 44.3 MB in the beginning and 42.8 MB in the end (delta: 1.6 MB). 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 - 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: 130230.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 5.6ms, AutomataDifference: 73348.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 82 SolverSat, 10 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 66574.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 31089.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.5ms SsaConstructionTime, 8805.9ms SatisfiabilityAnalysisTime, 43475.0ms 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 06:29:34,528 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...