./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:32:13,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:32:13,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:32:13,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:32:13,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:32:13,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:32:13,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:32:13,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:32:13,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:32:13,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:32:13,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:32:13,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:32:13,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:32:13,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:32:13,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:32:13,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:32:13,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:32:13,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:32:13,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:32:13,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:32:13,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:32:13,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:32:13,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:32:13,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:32:13,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:32:13,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:32:13,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:32:13,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:32:13,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:32:13,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:32:13,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:32:13,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:32:13,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:32:13,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:32:13,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:32:13,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:32:13,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:32:13,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:32:13,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:32:13,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:32:13,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:32:13,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:32:13,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:32:13,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:32:13,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:32:13,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:32:13,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:32:13,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:32:13,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:32:13,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:32:13,274 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:32:13,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:32:13,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:32:13,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:32:13,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:32:13,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:32:13,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:32:13,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:32:13,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:32:13,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:32:13,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:32:13,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:32:13,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:32:13,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:32:13,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:32:13,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:32:13,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:32:13,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:32:13,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:32:13,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:32:13,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:32:13,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:32:13,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:32:13,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:32:13,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:32:13,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:32:13,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2021-12-15 23:32:13,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:32:13,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:32:13,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:32:13,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:32:13,522 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:32:13,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-12-15 23:32:13,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/576f209b1/2f5635332d95492fb7854b27c198719c/FLAGf78bd6f21 [2021-12-15 23:32:13,962 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:32:13,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-12-15 23:32:13,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/576f209b1/2f5635332d95492fb7854b27c198719c/FLAGf78bd6f21 [2021-12-15 23:32:14,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/576f209b1/2f5635332d95492fb7854b27c198719c [2021-12-15 23:32:14,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:32:14,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:32:14,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:32:14,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:32:14,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:32:14,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e26c97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14, skipping insertion in model container [2021-12-15 23:32:14,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:32:14,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:32:14,542 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/zonotope_tight.c[577,590] [2021-12-15 23:32:14,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:32:14,563 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:32:14,573 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/zonotope_tight.c[577,590] [2021-12-15 23:32:14,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:32:14,587 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:32:14,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14 WrapperNode [2021-12-15 23:32:14,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:32:14,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:32:14,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:32:14,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:32:14,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,615 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-12-15 23:32:14,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:32:14,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:32:14,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:32:14,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:32:14,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:32:14,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:32:14,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:32:14,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:32:14,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (1/1) ... [2021-12-15 23:32:14,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:32:14,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:32:14,656 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) [2021-12-15 23:32:14,666 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 [2021-12-15 23:32:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:32:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:32:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:32:14,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:32:14,734 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:32:14,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:32:14,806 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:32:14,811 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:32:14,811 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:32:14,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:32:14 BoogieIcfgContainer [2021-12-15 23:32:14,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:32:14,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:32:14,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:32:14,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:32:14,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:32:14" (1/3) ... [2021-12-15 23:32:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189ddc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:32:14, skipping insertion in model container [2021-12-15 23:32:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:14" (2/3) ... [2021-12-15 23:32:14,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189ddc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:32:14, skipping insertion in model container [2021-12-15 23:32:14,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:32:14" (3/3) ... [2021-12-15 23:32:14,821 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2021-12-15 23:32:14,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:32:14,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:32:14,869 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:32:14,875 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2021-12-15 23:32:14,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:32:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) [2021-12-15 23:32:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 23:32:14,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:32:14,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:32:14,893 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:32:14,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:32:14,898 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2021-12-15 23:32:14,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:32:14,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101047298] [2021-12-15 23:32:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:32:14,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:32:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:32:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:32:15,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:32:15,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101047298] [2021-12-15 23:32:15,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101047298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:32:15,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:32:15,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:32:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56028742] [2021-12-15 23:32:15,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:32:15,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:32:15,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:32:15,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:32:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:32:15,075 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-15 23:32:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:32:15,086 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-12-15 23:32:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:32:15,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 [2021-12-15 23:32:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:32:15,094 INFO L225 Difference]: With dead ends: 23 [2021-12-15 23:32:15,094 INFO L226 Difference]: Without dead ends: 9 [2021-12-15 23:32:15,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:32:15,101 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:32:15,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:32:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-15 23:32:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-15 23:32:15,125 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) [2021-12-15 23:32:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-15 23:32:15,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2021-12-15 23:32:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:32:15,127 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-15 23:32:15,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-15 23:32:15,128 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-15 23:32:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 23:32:15,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:32:15,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:32:15,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:32:15,129 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:32:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:32:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2021-12-15 23:32:15,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:32:15,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011600606] [2021-12-15 23:32:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:32:15,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:32:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:32:15,147 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:32:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:32:15,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:32:15,180 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:32:15,182 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:32:15,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:32:15,190 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 23:32:15,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:32:15,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:32:15 BoogieIcfgContainer [2021-12-15 23:32:15,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:32:15,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:32:15,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:32:15,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:32:15,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:32:14" (3/4) ... [2021-12-15 23:32:15,223 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:32:15,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:32:15,224 INFO L158 Benchmark]: Toolchain (without parser) took 833.51ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 76.1MB in the beginning and 101.6MB in the end (delta: -25.5MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2021-12-15 23:32:15,225 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 58.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:32:15,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.03ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 75.8MB in the beginning and 100.8MB in the end (delta: -24.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:32:15,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.18ms. Allocated memory is still 123.7MB. Free memory was 100.8MB in the beginning and 99.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:32:15,226 INFO L158 Benchmark]: Boogie Preprocessor took 14.66ms. Allocated memory is still 123.7MB. Free memory was 99.4MB in the beginning and 98.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:32:15,227 INFO L158 Benchmark]: RCFGBuilder took 181.41ms. Allocated memory is still 123.7MB. Free memory was 98.3MB in the beginning and 89.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:32:15,227 INFO L158 Benchmark]: TraceAbstraction took 398.40ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 66.7MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 23:32:15,227 INFO L158 Benchmark]: Witness Printer took 9.84ms. Allocated memory is still 123.7MB. Free memory was 66.7MB in the beginning and 101.6MB in the end (delta: -34.9MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-12-15 23:32:15,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 58.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.03ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 75.8MB in the beginning and 100.8MB in the end (delta: -24.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.18ms. Allocated memory is still 123.7MB. Free memory was 100.8MB in the beginning and 99.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.66ms. Allocated memory is still 123.7MB. Free memory was 99.4MB in the beginning and 98.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 181.41ms. Allocated memory is still 123.7MB. Free memory was 98.3MB in the beginning and 89.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 398.40ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 66.7MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 9.84ms. Allocated memory is still 123.7MB. Free memory was 66.7MB in the beginning and 101.6MB in the end (delta: -34.9MB). Peak memory consumption was 6.2MB. 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: 14]: 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 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L21] CALL assume_abort_if_not(x >= 0. && x <= 10.) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= 0. && x <= 10.) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L27] CALL __VERIFIER_assert(y >= 0. && y <= 4.) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 23:32:15,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- 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/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:32:17,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:32:17,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:32:17,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:32:17,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:32:17,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:32:17,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:32:17,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:32:17,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:32:17,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:32:17,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:32:17,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:32:17,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:32:17,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:32:17,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:32:17,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:32:17,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:32:17,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:32:17,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:32:17,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:32:17,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:32:17,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:32:17,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:32:17,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:32:17,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:32:17,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:32:17,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:32:17,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:32:17,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:32:17,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:32:17,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:32:17,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:32:17,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:32:17,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:32:17,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:32:17,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:32:17,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:32:17,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:32:17,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:32:17,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:32:17,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:32:17,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:32:17,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:32:17,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:32:17,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:32:17,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:32:17,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:32:17,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:32:17,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:32:17,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:32:17,375 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:32:17,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:32:17,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:32:17,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:32:17,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:32:17,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:32:17,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:32:17,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:32:17,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:32:17,377 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:32:17,377 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:32:17,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:32:17,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:32:17,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:32:17,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:32:17,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:32:17,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:32:17,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:32:17,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:32:17,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:32:17,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:32:17,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:32:17,379 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:32:17,379 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:32:17,380 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:32:17,380 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:32:17,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:32:17,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:32:17,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:32:17,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2021-12-15 23:32:17,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:32:17,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:32:17,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:32:17,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:32:17,733 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:32:17,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-12-15 23:32:17,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e97b7239/0495b806c8b34b4eaf7a54cf47125842/FLAG57f2b987d [2021-12-15 23:32:18,237 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:32:18,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-12-15 23:32:18,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e97b7239/0495b806c8b34b4eaf7a54cf47125842/FLAG57f2b987d [2021-12-15 23:32:18,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e97b7239/0495b806c8b34b4eaf7a54cf47125842 [2021-12-15 23:32:18,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:32:18,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:32:18,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:32:18,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:32:18,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:32:18,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e754cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18, skipping insertion in model container [2021-12-15 23:32:18,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:32:18,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:32:18,806 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/zonotope_tight.c[577,590] [2021-12-15 23:32:18,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:32:18,826 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:32:18,835 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/zonotope_tight.c[577,590] [2021-12-15 23:32:18,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:32:18,852 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:32:18,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18 WrapperNode [2021-12-15 23:32:18,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:32:18,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:32:18,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:32:18,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:32:18,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,899 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2021-12-15 23:32:18,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:32:18,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:32:18,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:32:18,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:32:18,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:32:18,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:32:18,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:32:18,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:32:18,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (1/1) ... [2021-12-15 23:32:18,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:32:18,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:32:18,972 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) [2021-12-15 23:32:19,003 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 [2021-12-15 23:32:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:32:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:32:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:32:19,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:32:19,065 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:32:19,067 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:32:21,986 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:32:21,991 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:32:21,991 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:32:21,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:32:21 BoogieIcfgContainer [2021-12-15 23:32:21,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:32:21,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:32:21,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:32:21,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:32:21,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:32:18" (1/3) ... [2021-12-15 23:32:22,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f189233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:32:22, skipping insertion in model container [2021-12-15 23:32:22,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:32:18" (2/3) ... [2021-12-15 23:32:22,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f189233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:32:22, skipping insertion in model container [2021-12-15 23:32:22,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:32:21" (3/3) ... [2021-12-15 23:32:22,002 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2021-12-15 23:32:22,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:32:22,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:32:22,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:32:22,078 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 [2021-12-15 23:32:22,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:32:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) [2021-12-15 23:32:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 23:32:22,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:32:22,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:32:22,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:32:22,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:32:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2021-12-15 23:32:22,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:32:22,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834448471] [2021-12-15 23:32:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:32:22,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:32:22,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:32:22,119 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) [2021-12-15 23:32:22,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:32:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:32:22,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 23:32:22,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:32:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:32:22,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:32:22,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:32:22,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834448471] [2021-12-15 23:32:22,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834448471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:32:22,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:32:22,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:32:22,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180945833] [2021-12-15 23:32:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:32:22,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:32:22,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:32:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:32:22,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:32:22,593 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-15 23:32:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:32:22,607 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-12-15 23:32:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:32:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 [2021-12-15 23:32:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:32:22,618 INFO L225 Difference]: With dead ends: 23 [2021-12-15 23:32:22,618 INFO L226 Difference]: Without dead ends: 9 [2021-12-15 23:32:22,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:32:22,626 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:32:22,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:32:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-15 23:32:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-15 23:32:22,652 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) [2021-12-15 23:32:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-15 23:32:22,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2021-12-15 23:32:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:32:22,655 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-15 23:32:22,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-15 23:32:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-15 23:32:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 23:32:22,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:32:22,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:32:22,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 23:32:22,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:32:22,873 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:32:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:32:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2021-12-15 23:32:22,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:32:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972695208] [2021-12-15 23:32:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:32:22,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:32:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:32:22,879 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) [2021-12-15 23:32:22,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 23:32:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:32:23,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 23:32:23,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:32:50,184 WARN L227 SmtUtils]: Spent 11.08s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)