./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.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_valuebound10.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 c7ea68167b15ad5c2c66c983bd3a726f44f721c6 ................................................................................................................................................................................................................................................................................................................ 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_valuebound10.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 c7ea68167b15ad5c2c66c983bd3a726f44f721c6 ............................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:24:56,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:24:56,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:24:56,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:24:56,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:24:56,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:24:56,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:24:56,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:24:56,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:24:56,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:24:56,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:24:56,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:24:56,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:24:56,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:24:56,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:24:56,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:24:56,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:24:56,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:24:56,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:24:56,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:24:56,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:24:56,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:24:56,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:24:56,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:24:56,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:24:56,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:24:56,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:24:56,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:24:56,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:24:56,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:24:56,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:24:56,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:24:56,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:24:56,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:24:56,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:24:56,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:24:56,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:24:56,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:24:56,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:24:56,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:24:56,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:24:56,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:24:56,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:24:56,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:24:56,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:24:56,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:24:56,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:24:56,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:24:56,441 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:24:56,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:24:56,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:24:56,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:24:56,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:24:56,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:24:56,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:24:56,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:24:56,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:24:56,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:24:56,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:24:56,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:24:56,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:24:56,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:24:56,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:24:56,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:24:56,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:24:56,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:24:56,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:24:56,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:24:56,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:24:56,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:24:56,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:24:56,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:24:56,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7ea68167b15ad5c2c66c983bd3a726f44f721c6 [2021-08-26 06:24:56,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:24:56,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:24:56,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:24:56,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:24:56,765 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:24:56,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2021-08-26 06:24:56,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2479f10/8bde4724f8214cb3a15684d609af4020/FLAG1b06db70e [2021-08-26 06:24:57,311 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:24:57,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2021-08-26 06:24:57,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2479f10/8bde4724f8214cb3a15684d609af4020/FLAG1b06db70e [2021-08-26 06:24:57,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2479f10/8bde4724f8214cb3a15684d609af4020 [2021-08-26 06:24:57,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:24:57,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:24:57,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:24:57,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:24:57,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:24:57,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:57,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633899bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57, skipping insertion in model container [2021-08-26 06:24:57,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:57,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:24:57,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:24:57,878 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_valuebound10.c[709,722] [2021-08-26 06:24:57,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:24:57,938 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:24:57,960 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_valuebound10.c[709,722] [2021-08-26 06:24:57,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:24:57,996 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:24:57,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57 WrapperNode [2021-08-26 06:24:57,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:24:58,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:24:58,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:24:58,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:24:58,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:24:58,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:24:58,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:24:58,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:24:58,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:24:58,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:24:58,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:24:58,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:24:58,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (1/1) ... [2021-08-26 06:24:58,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:24:58,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:24:58,114 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 06:24:58,146 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 06:24:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:24:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:24:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:24:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:24:58,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:24:58,473 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 06:24:58,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:24:58 BoogieIcfgContainer [2021-08-26 06:24:58,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:24:58,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:24:58,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:24:58,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:24:58,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:24:57" (1/3) ... [2021-08-26 06:24:58,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ab8ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:24:58, skipping insertion in model container [2021-08-26 06:24:58,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:24:57" (2/3) ... [2021-08-26 06:24:58,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ab8ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:24:58, skipping insertion in model container [2021-08-26 06:24:58,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:24:58" (3/3) ... [2021-08-26 06:24:58,482 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound10.c [2021-08-26 06:24:58,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:24:58,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:24:58,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:24:58,544 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 06:24:58,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:24:58,557 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 06:24:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:24:58,561 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:24:58,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:24:58,562 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 06:24:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:24:58,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 06:24:58,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:24:58,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119430880] [2021-08-26 06:24:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:24:58,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:24:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:24:58,685 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 06:24:58,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:24:58,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119430880] [2021-08-26 06:24:58,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119430880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:24:58,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:24:58,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:24:58,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905569012] [2021-08-26 06:24:58,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:24:58,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:24:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:24:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:24:58,722 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 06:24:58,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:24:58,741 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-26 06:24:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:24:58,742 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 06:24:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:24:58,748 INFO L225 Difference]: With dead ends: 63 [2021-08-26 06:24:58,748 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 06:24:58,751 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 06:24:58,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 06:24:58,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 06:24:58,776 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 06:24:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-26 06:24:58,779 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-26 06:24:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:24:58,780 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-26 06:24:58,780 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 06:24:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-26 06:24:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:24:58,780 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:24:58,780 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:24:58,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:24:58,781 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 06:24:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:24:58,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 06:24:58,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:24:58,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351163281] [2021-08-26 06:24:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:24:58,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:24:58,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:24:58,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858730825] [2021-08-26 06:24:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:24:58,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:24:58,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:24:58,815 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 06:24:58,816 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 06:24:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:24:58,872 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:24:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:24:58,905 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 06:24:58,905 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:24:58,907 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:58,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:58,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:58,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:58,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:58,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:58,932 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 06:24:59,129 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 06:24:59,137 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:24:59,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:24:59 BoogieIcfgContainer [2021-08-26 06:24:59,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:24:59,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:24:59,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:24:59,158 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:24:59,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:24:58" (3/4) ... [2021-08-26 06:24:59,163 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 06:24:59,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:24:59,166 INFO L168 Benchmark]: Toolchain (without parser) took 1437.22 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.8 MB in the beginning and 35.9 MB in the end (delta: -61.2 kB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:59,167 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:24:59,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.99 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 39.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:59,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.57 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:24:59,173 INFO L168 Benchmark]: Boogie Preprocessor took 37.35 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 36.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:59,173 INFO L168 Benchmark]: RCFGBuilder took 390.65 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.2 MB in the beginning and 47.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:59,174 INFO L168 Benchmark]: TraceAbstraction took 680.19 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 36.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:59,174 INFO L168 Benchmark]: Witness Printer took 5.76 ms. Allocated memory is still 69.2 MB. Free memory was 36.2 MB in the beginning and 35.9 MB in the end (delta: 388.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:24:59,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.99 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 39.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.57 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.35 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 36.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 390.65 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.2 MB in the beginning and 47.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 680.19 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 36.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.76 ms. Allocated memory is still 69.2 MB. Free memory was 36.2 MB in the beginning and 35.9 MB in the end (delta: 388.0 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: 598.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.6ms, AutomataDifference: 49.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, 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: 16.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.1ms SsaConstructionTime, 37.2ms SatisfiabilityAnalysisTime, 36.6ms 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 06:24:59,223 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 06:25:01,107 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 06:25:01,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:25:01,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:25:01,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:25:01,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:25:01,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:25:01,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:25:01,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:25:01,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:25:01,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:25:01,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:25:01,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:25:01,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 06:25:01,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:25:01,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:25:01,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:25:01,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:25:01,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:25:01,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:25:01,257 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:25:01,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:25:01,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:25:01,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:25:01,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:25:01,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:25:01,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:25:01,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:25:01,259 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 06:25:01,259 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 06:25:01,265 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:25:01,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:25:01,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:25:01,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:25:01,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:25:01,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:25:01,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:25:01,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:25:01,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 06:25:01,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7ea68167b15ad5c2c66c983bd3a726f44f721c6 [2021-08-26 06:25:01,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:25:01,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:25:01,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:25:01,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:25:01,630 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:25:01,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2021-08-26 06:25:01,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc2a9937/b9abb477a3c145dbb9bf087a84f7e0fd/FLAGccb026df8 [2021-08-26 06:25:02,175 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:25:02,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2021-08-26 06:25:02,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc2a9937/b9abb477a3c145dbb9bf087a84f7e0fd/FLAGccb026df8 [2021-08-26 06:25:02,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc2a9937/b9abb477a3c145dbb9bf087a84f7e0fd [2021-08-26 06:25:02,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:25:02,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:25:02,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:25:02,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:25:02,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:25:02,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f803a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02, skipping insertion in model container [2021-08-26 06:25:02,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:25:02,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:25:02,395 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_valuebound10.c[709,722] [2021-08-26 06:25:02,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:25:02,480 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:25:02,490 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_valuebound10.c[709,722] [2021-08-26 06:25:02,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:25:02,531 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:25:02,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02 WrapperNode [2021-08-26 06:25:02,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:25:02,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:25:02,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:25:02,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:25:02,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:25:02,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:25:02,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:25:02,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:25:02,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:25:02,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:25:02,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:25:02,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:25:02,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (1/1) ... [2021-08-26 06:25:02,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:25:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:25:02,670 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 06:25:02,690 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 06:25:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 06:25:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:25:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:25:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:25:14,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:25:14,463 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 06:25:14,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:25:14 BoogieIcfgContainer [2021-08-26 06:25:14,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:25:14,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:25:14,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:25:14,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:25:14,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:25:02" (1/3) ... [2021-08-26 06:25:14,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd585b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:25:14, skipping insertion in model container [2021-08-26 06:25:14,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:25:02" (2/3) ... [2021-08-26 06:25:14,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd585b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:25:14, skipping insertion in model container [2021-08-26 06:25:14,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:25:14" (3/3) ... [2021-08-26 06:25:14,478 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound10.c [2021-08-26 06:25:14,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:25:14,483 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:25:14,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:25:14,543 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 06:25:14,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:25:14,557 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 06:25:14,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:25:14,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:25:14,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:25:14,565 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 06:25:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:25:14,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 06:25:14,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:25:14,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114472222] [2021-08-26 06:25:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:25:14,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:25:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:25:14,585 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 06:25:14,587 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 06:25:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:25:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 06:25:14,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:25:14,874 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 06:25:14,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:25:14,949 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 06:25:14,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:25:14,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114472222] [2021-08-26 06:25:14,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114472222] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:25:14,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:25:14,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 06:25:14,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530975843] [2021-08-26 06:25:14,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:25:14,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:25:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:25:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:25:14,974 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 06:25:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:25:14,990 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-26 06:25:14,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:25:14,992 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 06:25:14,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:25:14,998 INFO L225 Difference]: With dead ends: 63 [2021-08-26 06:25:14,998 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 06:25:15,001 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 06:25:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 06:25:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 06:25:15,027 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 06:25:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-26 06:25:15,030 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-26 06:25:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:25:15,030 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-26 06:25:15,030 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 06:25:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-26 06:25:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:25:15,036 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:25:15,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:25:15,055 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 06:25:15,250 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 06:25:15,251 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 06:25:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:25:15,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 06:25:15,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:25:15,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619038452] [2021-08-26 06:25:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:25:15,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:25:15,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:25:15,253 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 06:25:15,255 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 06:25:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:25:15,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 06:25:15,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:25:15,850 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 06:25:15,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:25:22,055 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 06:25:22,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:25:22,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619038452] [2021-08-26 06:25:22,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619038452] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:25:22,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:25:22,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-26 06:25:22,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672279203] [2021-08-26 06:25:22,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:25:22,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:25:22,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:25:22,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:25:22,058 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 06:25:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:25:52,235 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-08-26 06:25:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:25:52,235 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 06:25:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:25:52,236 INFO L225 Difference]: With dead ends: 34 [2021-08-26 06:25:52,236 INFO L226 Difference]: Without dead ends: 32 [2021-08-26 06:25:52,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5627.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-26 06:25:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-26 06:25:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-08-26 06:25:52,241 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 06:25:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-08-26 06:25:52,242 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-08-26 06:25:52,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:25:52,242 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-08-26 06:25:52,242 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 06:25:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-08-26 06:25:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:25:52,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:25:52,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:25:52,256 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 06:25:52,453 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 06:25:52,454 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 06:25:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:25:52,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-26 06:25:52,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:25:52,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842080890] [2021-08-26 06:25:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:25:52,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:25:52,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:25:52,457 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 06:25:52,462 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 06:25:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:25:53,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 06:25:53,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:25:54,971 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 06:25:54,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:26:01,222 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 06:26:03,267 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 06:26:32,793 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 06:26:32,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:26:32,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842080890] [2021-08-26 06:26:32,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842080890] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:26:32,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:26:32,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-08-26 06:26:32,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732863286] [2021-08-26 06:26:32,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 06:26:32,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:26:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 06:26:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-08-26 06:26:32,796 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 06:26:38,711 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse1 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv10 32))))) (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse0 (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse1) (not .cse0)))) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) .cse1)) is different from true [2021-08-26 06:26:41,125 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv10 32)))) is different from true [2021-08-26 06:27:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:27:21,395 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-08-26 06:27:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 06:27:21,396 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 06:27:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:27:21,397 INFO L225 Difference]: With dead ends: 36 [2021-08-26 06:27:21,397 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 06:27:21,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 28203.1ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-08-26 06:27:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 06:27:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-08-26 06:27:21,405 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 06:27:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-08-26 06:27:21,406 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-08-26 06:27:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:27:21,406 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-08-26 06:27:21,406 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 06:27:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-08-26 06:27:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 06:27:21,406 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:27:21,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:27:21,420 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 06:27:21,607 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 06:27:21,607 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 06:27:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:27:21,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-26 06:27:21,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:27:21,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307917140] [2021-08-26 06:27:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:27:21,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:27:21,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:27:21,609 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 06:27:21,612 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 06:27:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:27:23,560 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:28:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:28:00,628 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-26 06:28:00,629 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:28:00,630 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:00,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:00,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:00,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:00,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:00,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:28:00,714 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 06:28:00,833 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 06:28:00,838 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:28:00,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:28:00 BoogieIcfgContainer [2021-08-26 06:28:00,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:28:00,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:28:00,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:28:00,861 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:28:00,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:25:14" (3/4) ... [2021-08-26 06:28:00,862 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 06:28:00,900 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:28:00,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:28:00,902 INFO L168 Benchmark]: Toolchain (without parser) took 178681.49 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.7 MB in the beginning and 29.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:00,903 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 37.9 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:28:00,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.91 ms. Allocated memory is still 56.6 MB. Free memory was 34.5 MB in the beginning and 37.8 MB in the end (delta: -3.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:00,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 36.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:00,904 INFO L168 Benchmark]: Boogie Preprocessor took 53.31 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 34.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:28:00,904 INFO L168 Benchmark]: RCFGBuilder took 11826.73 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 31.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:00,905 INFO L168 Benchmark]: TraceAbstraction took 166392.89 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 30.9 MB in the beginning and 31.2 MB in the end (delta: -315.3 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-08-26 06:28:00,905 INFO L168 Benchmark]: Witness Printer took 40.58 ms. Allocated memory is still 69.2 MB. Free memory was 31.2 MB in the beginning and 29.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:28:00,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 37.9 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.91 ms. Allocated memory is still 56.6 MB. Free memory was 34.5 MB in the beginning and 37.8 MB in the end (delta: -3.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 36.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.31 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 34.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11826.73 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 31.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 166392.89 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 30.9 MB in the beginning and 31.2 MB in the end (delta: -315.3 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 40.58 ms. Allocated memory is still 69.2 MB. Free memory was 31.2 MB in the beginning and 29.6 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: 166301.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 15.7ms, AutomataDifference: 78823.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 82 SolverSat, 10 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 71326.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 33830.6ms 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: 30.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.2ms SsaConstructionTime, 2745.4ms SatisfiabilityAnalysisTime, 46487.7ms 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 06:28:01,069 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...