./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/drift_tenth.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/drift_tenth.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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:02:17,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:02:17,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:02:17,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:02:17,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:02:17,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:02:17,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:02:17,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:02:17,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:02:17,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:02:17,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:02:17,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:02:17,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:02:17,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:02:17,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:02:17,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:02:17,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:02:17,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:02:17,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:02:17,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:02:17,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:02:17,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:02:17,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:02:17,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:02:17,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:02:17,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:02:17,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:02:17,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:02:17,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:02:17,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:02:17,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:02:17,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:02:17,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:02:17,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:02:17,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:02:17,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:02:17,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:02:17,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:02:17,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:02:17,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:02:17,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:02:17,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:02:17,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:02:17,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:02:17,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:02:17,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:02:17,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:02:17,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:02:17,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:02:17,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:02:17,170 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:02:17,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:02:17,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:02:17,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:02:17,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:02:17,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:02:17,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:02:17,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:02:17,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:02:17,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:02:17,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:02:17,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:02:17,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:02:17,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:02:17,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:02:17,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:02:17,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:17,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:02:17,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:02:17,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:02:17,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:02:17,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:02:17,174 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:02:17,174 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:02:17,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:02:17,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:02:17,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2021-12-22 10:02:17,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:02:17,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:02:17,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:02:17,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:02:17,391 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:02:17,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2021-12-22 10:02:17,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f2f65683/6a48ae7373b14b9682b86dda3faf5a87/FLAGd41e0dd37 [2021-12-22 10:02:17,781 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:02:17,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2021-12-22 10:02:17,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f2f65683/6a48ae7373b14b9682b86dda3faf5a87/FLAGd41e0dd37 [2021-12-22 10:02:18,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f2f65683/6a48ae7373b14b9682b86dda3faf5a87 [2021-12-22 10:02:18,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:02:18,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:02:18,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:18,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:02:18,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:02:18,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2eb7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18, skipping insertion in model container [2021-12-22 10:02:18,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:02:18,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:02:18,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-12-22 10:02:18,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:18,355 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:02:18,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-12-22 10:02:18,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:18,373 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:02:18,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18 WrapperNode [2021-12-22 10:02:18,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:18,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:18,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:02:18,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:02:18,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,392 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2021-12-22 10:02:18,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:18,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:02:18,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:02:18,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:02:18,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:02:18,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:02:18,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:02:18,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:02:18,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (1/1) ... [2021-12-22 10:02:18,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:18,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:02:18,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:02:18,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:02:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:02:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:02:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:02:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:02:18,505 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:02:18,506 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:02:18,563 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:02:18,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:02:18,583 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 10:02:18,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:18 BoogieIcfgContainer [2021-12-22 10:02:18,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:02:18,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:02:18,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:02:18,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:02:18,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:02:18" (1/3) ... [2021-12-22 10:02:18,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1a951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:18, skipping insertion in model container [2021-12-22 10:02:18,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:18" (2/3) ... [2021-12-22 10:02:18,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1a951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:18, skipping insertion in model container [2021-12-22 10:02:18,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:18" (3/3) ... [2021-12-22 10:02:18,608 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2021-12-22 10:02:18,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:02:18,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:02:18,641 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:02:18,645 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:02:18,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:02:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 10:02:18,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:18,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 10:02:18,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-12-22 10:02:18,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:02:18,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760761702] [2021-12-22 10:02:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:18,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:02:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:02:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:18,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:02:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760761702] [2021-12-22 10:02:18,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760761702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:02:18,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:02:18,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 10:02:18,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711367583] [2021-12-22 10:02:18,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:02:18,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 10:02:18,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:02:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 10:02:18,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:02:18,800 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:02:18,815 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-12-22 10:02:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 10:02:18,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-22 10:02:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:02:18,821 INFO L225 Difference]: With dead ends: 22 [2021-12-22 10:02:18,821 INFO L226 Difference]: Without dead ends: 10 [2021-12-22 10:02:18,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:02:18,825 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:02:18,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:02:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-22 10:02:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-12-22 10:02:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-22 10:02:18,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-12-22 10:02:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:02:18,846 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-22 10:02:18,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-22 10:02:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 10:02:18,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:18,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:02:18,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:02:18,847 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-12-22 10:02:18,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:02:18,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865905908] [2021-12-22 10:02:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:18,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:02:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:02:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:18,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:02:18,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865905908] [2021-12-22 10:02:18,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865905908] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 10:02:18,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811397126] [2021-12-22 10:02:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:18,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 10:02:18,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:02:18,900 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) [2021-12-22 10:02:18,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 10:02:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:02:18,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 10:02:18,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:02:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:18,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:02:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:19,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811397126] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:02:19,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 10:02:19,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-22 10:02:19,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076475780] [2021-12-22 10:02:19,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 10:02:19,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 10:02:19,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:02:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 10:02:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:02:19,009 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:02:19,027 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-12-22 10:02:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:02:19,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 8 [2021-12-22 10:02:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:02:19,029 INFO L225 Difference]: With dead ends: 19 [2021-12-22 10:02:19,029 INFO L226 Difference]: Without dead ends: 15 [2021-12-22 10:02:19,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:02:19,030 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:02:19,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:02:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-22 10:02:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-22 10:02:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-22 10:02:19,033 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-12-22 10:02:19,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:02:19,033 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-22 10:02:19,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-22 10:02:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 10:02:19,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:19,033 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-12-22 10:02:19,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 10:02:19,251 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 [2021-12-22 10:02:19,252 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2021-12-22 10:02:19,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:02:19,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823454461] [2021-12-22 10:02:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:19,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:02:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:02:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:19,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:02:19,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823454461] [2021-12-22 10:02:19,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823454461] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 10:02:19,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743684116] [2021-12-22 10:02:19,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 10:02:19,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 10:02:19,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:02:19,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 10:02:19,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 10:02:19,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 10:02:19,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 10:02:19,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 10:02:19,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:02:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:19,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:02:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:19,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743684116] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:02:19,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 10:02:19,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-22 10:02:19,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675462894] [2021-12-22 10:02:19,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 10:02:19,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 10:02:19,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:02:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 10:02:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-22 10:02:19,511 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:02:19,552 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-12-22 10:02:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 10:02:19,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-22 10:02:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:02:19,553 INFO L225 Difference]: With dead ends: 31 [2021-12-22 10:02:19,553 INFO L226 Difference]: Without dead ends: 27 [2021-12-22 10:02:19,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-22 10:02:19,557 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:02:19,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:02:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-22 10:02:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-22 10:02:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-12-22 10:02:19,568 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-12-22 10:02:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:02:19,569 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-12-22 10:02:19,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-12-22 10:02:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 10:02:19,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:19,571 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-12-22 10:02:19,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 10:02:19,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-22 10:02:19,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 3 times [2021-12-22 10:02:19,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:02:19,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932805296] [2021-12-22 10:02:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:19,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:02:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:02:19,814 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:02:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:02:19,843 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:02:19,843 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:02:19,844 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:02:19,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 10:02:19,852 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-12-22 10:02:19,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:02:19,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:02:19 BoogieIcfgContainer [2021-12-22 10:02:19,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:02:19,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:02:19,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:02:19,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:02:19,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:18" (3/4) ... [2021-12-22 10:02:19,882 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:02:19,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:02:19,882 INFO L158 Benchmark]: Toolchain (without parser) took 1657.71ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 76.9MB in the beginning and 118.5MB in the end (delta: -41.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:19,884 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:19,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.84ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 76.9MB in the beginning and 120.9MB in the end (delta: -44.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:02:19,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.15ms. Allocated memory is still 144.7MB. Free memory was 120.9MB in the beginning and 119.9MB in the end (delta: 976.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:02:19,885 INFO L158 Benchmark]: Boogie Preprocessor took 12.97ms. Allocated memory is still 144.7MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:19,885 INFO L158 Benchmark]: RCFGBuilder took 178.45ms. Allocated memory is still 144.7MB. Free memory was 118.5MB in the beginning and 109.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 10:02:19,885 INFO L158 Benchmark]: TraceAbstraction took 1291.48ms. Allocated memory is still 144.7MB. Free memory was 108.9MB in the beginning and 118.5MB in the end (delta: -9.6MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2021-12-22 10:02:19,885 INFO L158 Benchmark]: Witness Printer took 2.81ms. Allocated memory is still 144.7MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:19,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 142.84ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 76.9MB in the beginning and 120.9MB in the end (delta: -44.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.15ms. Allocated memory is still 144.7MB. Free memory was 120.9MB in the beginning and 119.9MB in the end (delta: 976.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.97ms. Allocated memory is still 144.7MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 178.45ms. Allocated memory is still 144.7MB. Free memory was 118.5MB in the beginning and 109.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1291.48ms. Allocated memory is still 144.7MB. Free memory was 108.9MB in the beginning and 118.5MB in the end (delta: -9.6MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. * Witness Printer took 2.81ms. Allocated memory is still 144.7MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 VAL [i=0, time=0] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=0] [L14] i++ VAL [i=1] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=1] [L14] i++ VAL [i=2] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=2] [L14] i++ VAL [i=3] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=3] [L14] i++ VAL [i=4] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=4] [L14] i++ VAL [i=5] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=5] [L14] i++ VAL [i=6] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=6] [L14] i++ VAL [i=7] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=7] [L14] i++ VAL [i=8] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=8] [L14] i++ VAL [i=9] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=9] [L14] i++ VAL [i=10] [L14] COND FALSE !(i < 10) VAL [i=10] [L17] CALL __VERIFIER_assert(time != 1.0) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 10:02:19,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/drift_tenth.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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:02:21,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:02:21,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:02:21,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:02:21,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:02:21,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:02:21,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:02:21,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:02:21,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:02:21,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:02:21,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:02:21,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:02:21,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:02:21,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:02:21,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:02:21,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:02:21,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:02:21,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:02:21,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:02:21,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:02:21,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:02:21,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:02:21,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:02:21,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:02:21,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:02:21,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:02:21,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:02:21,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:02:21,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:02:21,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:02:21,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:02:21,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:02:21,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:02:21,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:02:21,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:02:21,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:02:21,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:02:21,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:02:21,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:02:21,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:02:21,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:02:21,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:02:21,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:02:21,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:02:21,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:02:21,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:02:21,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:02:21,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:02:21,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:02:21,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:02:21,626 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:02:21,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:02:21,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:02:21,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:02:21,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:02:21,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:02:21,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:02:21,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:02:21,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:02:21,628 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:02:21,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:02:21,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:02:21,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:02:21,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:02:21,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:02:21,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:02:21,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:02:21,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:02:21,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:21,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:02:21,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:02:21,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:02:21,630 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:02:21,630 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:02:21,630 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:02:21,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:02:21,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:02:21,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:02:21,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:02:21,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2021-12-22 10:02:21,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:02:21,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:02:21,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:02:21,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:02:21,916 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:02:21,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2021-12-22 10:02:21,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b991d71ba/9cbdf271845741a0987c82041aa40c08/FLAG969e4c5e1 [2021-12-22 10:02:22,350 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:02:22,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2021-12-22 10:02:22,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b991d71ba/9cbdf271845741a0987c82041aa40c08/FLAG969e4c5e1 [2021-12-22 10:02:22,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b991d71ba/9cbdf271845741a0987c82041aa40c08 [2021-12-22 10:02:22,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:02:22,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:02:22,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:22,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:02:22,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:02:22,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f84913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22, skipping insertion in model container [2021-12-22 10:02:22,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:02:22,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:02:22,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-12-22 10:02:22,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:22,536 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:02:22,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-12-22 10:02:22,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:22,559 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:02:22,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22 WrapperNode [2021-12-22 10:02:22,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:22,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:22,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:02:22,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:02:22,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,623 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2021-12-22 10:02:22,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:22,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:02:22,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:02:22,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:02:22,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:02:22,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:02:22,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:02:22,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:02:22,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (1/1) ... [2021-12-22 10:02:22,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:22,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:02:22,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:02:22,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:02:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:02:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:02:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:02:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:02:22,754 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:02:22,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:02:22,877 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:02:22,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:02:22,881 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 10:02:22,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:22 BoogieIcfgContainer [2021-12-22 10:02:22,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:02:22,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:02:22,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:02:22,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:02:22,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:02:22" (1/3) ... [2021-12-22 10:02:22,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6519e4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:22, skipping insertion in model container [2021-12-22 10:02:22,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:22" (2/3) ... [2021-12-22 10:02:22,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6519e4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:22, skipping insertion in model container [2021-12-22 10:02:22,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:22" (3/3) ... [2021-12-22 10:02:22,886 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2021-12-22 10:02:22,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:02:22,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:02:22,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:02:22,947 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:02:22,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:02:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 10:02:22,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:22,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 10:02:22,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:22,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-12-22 10:02:23,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:02:23,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065290099] [2021-12-22 10:02:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:23,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:02:23,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:02:23,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:02:23,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:02:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:02:23,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 10:02:23,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:02:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:23,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:02:23,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:02:23,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065290099] [2021-12-22 10:02:23,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065290099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:02:23,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:02:23,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 10:02:23,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85094628] [2021-12-22 10:02:23,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:02:23,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 10:02:23,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:02:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 10:02:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:02:23,161 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:02:23,245 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-12-22 10:02:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 10:02:23,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-22 10:02:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:02:23,255 INFO L225 Difference]: With dead ends: 22 [2021-12-22 10:02:23,255 INFO L226 Difference]: Without dead ends: 10 [2021-12-22 10:02:23,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:02:23,261 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:02:23,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 10:02:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-22 10:02:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-12-22 10:02:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-22 10:02:23,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-12-22 10:02:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:02:23,286 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-22 10:02:23,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-22 10:02:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 10:02:23,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:23,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:02:23,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 10:02:23,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:02:23,494 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-12-22 10:02:23,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:02:23,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236633380] [2021-12-22 10:02:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:23,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:02:23,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:02:23,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:02:23,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 10:02:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:02:23,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 10:02:23,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:02:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:23,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:02:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:23,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:02:23,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236633380] [2021-12-22 10:02:23,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236633380] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:02:23,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 10:02:23,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-22 10:02:23,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355508791] [2021-12-22 10:02:23,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 10:02:23,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:02:23,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:02:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:02:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:02:23,672 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:23,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:02:23,870 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-12-22 10:02:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:02:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 10:02:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:02:23,873 INFO L225 Difference]: With dead ends: 19 [2021-12-22 10:02:23,881 INFO L226 Difference]: Without dead ends: 15 [2021-12-22 10:02:23,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:02:23,882 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 10:02:23,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 10:02:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-22 10:02:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-22 10:02:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-22 10:02:23,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-12-22 10:02:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:02:23,886 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-22 10:02:23,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:02:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-22 10:02:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 10:02:23,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:23,887 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-12-22 10:02:23,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 10:02:24,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:02:24,087 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2021-12-22 10:02:24,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:02:24,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596319248] [2021-12-22 10:02:24,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 10:02:24,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:02:24,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:02:24,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:02:24,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 10:02:24,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 10:02:24,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 10:02:24,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 10:02:24,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:02:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:27,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:03:13,977 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-12-22 10:03:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 6 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-22 10:03:15,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:03:15,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596319248] [2021-12-22 10:03:15,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596319248] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:03:15,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 10:03:15,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-22 10:03:15,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43787568] [2021-12-22 10:03:15,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 10:03:15,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 10:03:15,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:03:15,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 10:03:15,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=130, Unknown=6, NotChecked=24, Total=210 [2021-12-22 10:03:15,081 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:03:16,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 10:03:25,228 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (= (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse2) .cse2) .cse2) .cse2)) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-12-22 10:03:28,625 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)))) is different from true [2021-12-22 10:03:30,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:03:32,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []