./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/filter2.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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:36:45,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:36:45,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:36:45,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:36:45,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:36:45,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:36:45,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:36:45,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:36:45,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:36:45,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:36:45,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:36:45,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:36:45,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:36:45,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:36:45,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:36:45,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:36:45,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:36:45,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:36:45,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:36:45,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:36:45,836 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:36:45,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:36:45,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:36:45,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:36:45,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:36:45,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:36:45,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:36:45,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:36:45,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:36:45,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:36:45,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:36:45,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:36:45,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:36:45,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:36:45,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:36:45,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:36:45,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:36:45,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:36:45,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:36:45,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:36:45,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:36:45,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:36:45,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:36:45,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:36:45,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:36:45,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:36:45,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:36:45,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:36:45,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:36:45,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:36:45,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:36:45,880 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:36:45,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:36:45,881 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:36:45,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:36:45,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:36:45,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:36:45,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:36:45,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:36:45,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:36:45,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:36:45,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:36:45,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:36:45,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:36:45,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:36:45,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:36:45,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:36:45,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:36:45,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:36:45,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:36:45,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:36:45,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:36:45,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:36:45,884 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:36:45,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:36:45,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:36:45,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2022-07-19 13:36:46,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:36:46,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:36:46,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:36:46,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:36:46,104 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:36:46,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2022-07-19 13:36:46,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb89608bc/4e56c93139ac445a883a01a7b09a28a5/FLAGed8887a85 [2022-07-19 13:36:46,545 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:36:46,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2022-07-19 13:36:46,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb89608bc/4e56c93139ac445a883a01a7b09a28a5/FLAGed8887a85 [2022-07-19 13:36:46,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb89608bc/4e56c93139ac445a883a01a7b09a28a5 [2022-07-19 13:36:46,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:36:46,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:36:46,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:36:46,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:36:46,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:36:46,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:36:46" (1/1) ... [2022-07-19 13:36:46,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6628693c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:46, skipping insertion in model container [2022-07-19 13:36:46,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:36:46" (1/1) ... [2022-07-19 13:36:46,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:36:47,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:36:47,159 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/filter2.c[652,665] [2022-07-19 13:36:47,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:36:47,187 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:36:47,197 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/filter2.c[652,665] [2022-07-19 13:36:47,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:36:47,218 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:36:47,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47 WrapperNode [2022-07-19 13:36:47,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:36:47,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:36:47,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:36:47,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:36:47,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,246 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2022-07-19 13:36:47,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:36:47,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:36:47,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:36:47,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:36:47,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:36:47,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:36:47,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:36:47,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:36:47,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (1/1) ... [2022-07-19 13:36:47,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:36:47,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:36:47,317 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) [2022-07-19 13:36:47,318 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 [2022-07-19 13:36:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:36:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 13:36:47,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 13:36:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:36:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:36:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:36:47,395 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:36:47,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:36:47,472 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:36:47,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:36:47,478 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:36:47,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:36:47 BoogieIcfgContainer [2022-07-19 13:36:47,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:36:47,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:36:47,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:36:47,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:36:47,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:36:46" (1/3) ... [2022-07-19 13:36:47,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79917dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:36:47, skipping insertion in model container [2022-07-19 13:36:47,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:47" (2/3) ... [2022-07-19 13:36:47,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79917dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:36:47, skipping insertion in model container [2022-07-19 13:36:47,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:36:47" (3/3) ... [2022-07-19 13:36:47,487 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2022-07-19 13:36:47,498 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:36:47,499 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:36:47,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:36:47,536 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@371bf041, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52a987e2 [2022-07-19 13:36:47,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:36:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 13:36:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 13:36:47,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:36:47,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:36:47,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:36:47,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:36:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1602622425, now seen corresponding path program 1 times [2022-07-19 13:36:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:36:47,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935815996] [2022-07-19 13:36:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:36:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:36:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:36:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 13:36:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:36:47,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 13:36:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:36:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 13:36:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:36:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 13:36:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:36:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935815996] [2022-07-19 13:36:47,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935815996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:36:47,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:36:47,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:36:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731328575] [2022-07-19 13:36:47,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:36:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:36:47,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:36:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:36:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:36:47,714 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 13:36:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:36:47,737 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-07-19 13:36:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:36:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-07-19 13:36:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:36:47,743 INFO L225 Difference]: With dead ends: 39 [2022-07-19 13:36:47,743 INFO L226 Difference]: Without dead ends: 17 [2022-07-19 13:36:47,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:36:47,764 INFO L413 NwaCegarLoop]: 23 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, 23 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 [2022-07-19 13:36:47,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:36:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-19 13:36:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-19 13:36:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 13:36:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-19 13:36:47,803 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 22 [2022-07-19 13:36:47,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:36:47,803 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-19 13:36:47,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 13:36:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-19 13:36:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 13:36:47,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:36:47,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:36:47,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:36:47,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:36:47,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:36:47,806 INFO L85 PathProgramCache]: Analyzing trace with hash 168652453, now seen corresponding path program 1 times [2022-07-19 13:36:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:36:47,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889243271] [2022-07-19 13:36:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:36:47,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:36:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:36:47,831 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:36:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:36:47,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:36:47,875 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:36:47,876 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:36:47,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:36:47,882 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:36:47,885 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:36:47,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:36:47 BoogieIcfgContainer [2022-07-19 13:36:47,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:36:47,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:36:47,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:36:47,911 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:36:47,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:36:47" (3/4) ... [2022-07-19 13:36:47,913 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:36:47,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:36:47,915 INFO L158 Benchmark]: Toolchain (without parser) took 933.87ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 89.4MB in the beginning and 137.3MB in the end (delta: -47.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:36:47,915 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:36:47,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.78ms. Allocated memory is still 121.6MB. Free memory was 89.2MB in the beginning and 96.1MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:36:47,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.57ms. Allocated memory is still 121.6MB. Free memory was 96.1MB in the beginning and 94.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:36:47,920 INFO L158 Benchmark]: Boogie Preprocessor took 34.54ms. Allocated memory is still 121.6MB. Free memory was 94.2MB in the beginning and 93.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:36:47,921 INFO L158 Benchmark]: RCFGBuilder took 198.07ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 84.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:36:47,921 INFO L158 Benchmark]: TraceAbstraction took 427.70ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 83.7MB in the beginning and 138.2MB in the end (delta: -54.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:36:47,921 INFO L158 Benchmark]: Witness Printer took 3.64ms. Allocated memory is still 167.8MB. Free memory was 138.2MB in the beginning and 137.3MB in the end (delta: 839.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:36:47,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.78ms. Allocated memory is still 121.6MB. Free memory was 89.2MB in the beginning and 96.1MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.57ms. Allocated memory is still 121.6MB. Free memory was 96.1MB in the beginning and 94.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.54ms. Allocated memory is still 121.6MB. Free memory was 94.2MB in the beginning and 93.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 198.07ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 84.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 427.70ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 83.7MB in the beginning and 138.2MB in the end (delta: -54.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.64ms. Allocated memory is still 167.8MB. Free memory was 138.2MB in the beginning and 137.3MB in the end (delta: 839.2kB). 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: 17]: 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 44, overapproximation of to_real at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] int i; [L25] E = __VERIFIER_nondet_double() [L26] E0 = __VERIFIER_nondet_double() [L27] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L27] RET assume_abort_if_not(E >= 0. && E <= 1.) [L28] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L30] S0 = 0 [L31] S = 0 [L33] i = 0 VAL [i=0] [L33] COND TRUE i <= 1000000 [L34] E1 = E0 [L35] E0 = E [L37] E = __VERIFIER_nondet_double() [L38] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L38] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=52, E=49, E=50, i=0] [L40] S1 = S0 [L41] S0 = S [L42] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L44] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 23 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, 23 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 12/12 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 [2022-07-19 13:36:47,954 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/filter2.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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:36:49,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:36:49,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:36:49,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:36:49,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:36:49,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:36:49,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:36:49,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:36:49,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:36:49,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:36:49,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:36:49,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:36:49,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:36:49,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:36:49,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:36:49,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:36:49,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:36:49,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:36:49,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:36:49,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:36:49,737 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:36:49,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:36:49,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:36:49,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:36:49,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:36:49,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:36:49,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:36:49,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:36:49,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:36:49,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:36:49,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:36:49,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:36:49,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:36:49,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:36:49,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:36:49,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:36:49,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:36:49,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:36:49,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:36:49,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:36:49,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:36:49,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:36:49,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:36:49,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:36:49,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:36:49,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:36:49,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:36:49,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:36:49,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:36:49,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:36:49,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:36:49,788 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:36:49,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:36:49,789 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:36:49,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:36:49,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:36:49,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:36:49,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:36:49,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:36:49,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:36:49,790 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:36:49,790 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:36:49,790 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:36:49,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:36:49,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:36:49,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:36:49,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:36:49,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:36:49,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:36:49,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:36:49,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:36:49,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:36:49,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:36:49,792 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:36:49,792 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:36:49,793 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:36:49,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:36:49,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:36:49,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:36:49,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2022-07-19 13:36:50,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:36:50,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:36:50,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:36:50,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:36:50,084 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:36:50,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2022-07-19 13:36:50,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8434394df/ff7886d1604148aa9d80281ee4b3f2a9/FLAGcb29ad5ef [2022-07-19 13:36:50,476 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:36:50,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2022-07-19 13:36:50,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8434394df/ff7886d1604148aa9d80281ee4b3f2a9/FLAGcb29ad5ef [2022-07-19 13:36:50,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8434394df/ff7886d1604148aa9d80281ee4b3f2a9 [2022-07-19 13:36:50,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:36:50,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:36:50,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:36:50,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:36:50,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:36:50,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:36:50" (1/1) ... [2022-07-19 13:36:50,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fcaff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:50, skipping insertion in model container [2022-07-19 13:36:50,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:36:50" (1/1) ... [2022-07-19 13:36:50,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:36:50,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:36:51,052 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/filter2.c[652,665] [2022-07-19 13:36:51,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:36:51,101 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:36:51,115 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/filter2.c[652,665] [2022-07-19 13:36:51,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:36:51,158 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:36:51,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51 WrapperNode [2022-07-19 13:36:51,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:36:51,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:36:51,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:36:51,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:36:51,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,200 INFO L137 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-07-19 13:36:51,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:36:51,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:36:51,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:36:51,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:36:51,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:36:51,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:36:51,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:36:51,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:36:51,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (1/1) ... [2022-07-19 13:36:51,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:36:51,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:36:51,285 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) [2022-07-19 13:36:51,309 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 [2022-07-19 13:36:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:36:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:36:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 13:36:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 13:36:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:36:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:36:51,369 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:36:51,370 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:36:53,769 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:36:53,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:36:53,780 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:36:53,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:36:53 BoogieIcfgContainer [2022-07-19 13:36:53,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:36:53,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:36:53,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:36:53,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:36:53,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:36:50" (1/3) ... [2022-07-19 13:36:53,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623e6092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:36:53, skipping insertion in model container [2022-07-19 13:36:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:36:51" (2/3) ... [2022-07-19 13:36:53,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623e6092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:36:53, skipping insertion in model container [2022-07-19 13:36:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:36:53" (3/3) ... [2022-07-19 13:36:53,807 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2022-07-19 13:36:53,820 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:36:53,820 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:36:53,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:36:53,869 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@39148112, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d9ebdd6 [2022-07-19 13:36:53,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:36:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 13:36:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 13:36:53,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:36:53,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:36:53,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:36:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:36:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1602622425, now seen corresponding path program 1 times [2022-07-19 13:36:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:36:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756754971] [2022-07-19 13:36:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:36:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:36:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:36:53,904 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) [2022-07-19 13:36:53,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:36:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:36:55,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:36:55,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:36:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 13:36:55,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:36:55,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:36:55,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756754971] [2022-07-19 13:36:55,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756754971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:36:55,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:36:55,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:36:55,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393804030] [2022-07-19 13:36:55,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:36:55,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:36:55,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:36:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:36:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:36:55,133 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 13:36:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:36:55,146 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-07-19 13:36:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:36:55,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-07-19 13:36:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:36:55,152 INFO L225 Difference]: With dead ends: 39 [2022-07-19 13:36:55,152 INFO L226 Difference]: Without dead ends: 17 [2022-07-19 13:36:55,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:36:55,157 INFO L413 NwaCegarLoop]: 23 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, 23 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 [2022-07-19 13:36:55,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:36:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-19 13:36:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-19 13:36:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 13:36:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-19 13:36:55,191 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 22 [2022-07-19 13:36:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:36:55,192 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-19 13:36:55,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 13:36:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-19 13:36:55,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 13:36:55,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:36:55,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:36:55,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:36:55,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:36:55,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:36:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:36:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 168652453, now seen corresponding path program 1 times [2022-07-19 13:36:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:36:55,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815990951] [2022-07-19 13:36:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:36:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:36:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:36:55,401 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) [2022-07-19 13:36:55,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:37:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:37:03,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-19 13:37:03,916 INFO L286 TraceCheckSpWp]: Computing forward predicates...