./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter2_set.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_set.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 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:13:13,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:13:13,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:13:13,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:13:13,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:13:13,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:13:13,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:13:13,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:13:13,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:13:13,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:13:13,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:13:13,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:13:13,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:13:13,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:13:13,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:13:13,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:13:13,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:13:13,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:13:13,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:13:13,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:13:13,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:13:13,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:13:13,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:13:13,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:13:13,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:13:13,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:13:13,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:13:13,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:13:13,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:13:13,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:13:13,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:13:13,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:13:13,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:13:13,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:13:13,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:13:13,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:13:13,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:13:13,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:13:13,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:13:13,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:13:13,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:13:13,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:13:13,636 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:13:13,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:13:13,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:13:13,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:13:13,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:13:13,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:13:13,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:13:13,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:13:13,640 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:13:13,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:13:13,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:13:13,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:13:13,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:13:13,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:13:13,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:13:13,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:13:13,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:13:13,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:13:13,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:13:13,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:13:13,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:13:13,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:13:13,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:13:13,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:13:13,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:13:13,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:13:13,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:13:13,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:13:13,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:13:13,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:13:13,644 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:13:13,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:13:13,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:13:13,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:13:13,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2021-12-14 13:13:13,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:13:13,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:13:13,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:13:13,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:13:13,872 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:13:13,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_set.c [2021-12-14 13:13:13,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da35c8fea/dda71be013164d63a6728c40a0f36de3/FLAG1ad8b07c6 [2021-12-14 13:13:14,297 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:13:14,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c [2021-12-14 13:13:14,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da35c8fea/dda71be013164d63a6728c40a0f36de3/FLAG1ad8b07c6 [2021-12-14 13:13:14,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da35c8fea/dda71be013164d63a6728c40a0f36de3 [2021-12-14 13:13:14,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:13:14,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:13:14,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:13:14,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:13:14,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:13:14,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:14,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3a229d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14, skipping insertion in model container [2021-12-14 13:13:14,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:14,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:13:14,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:13:14,920 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_set.c[664,677] [2021-12-14 13:13:14,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:13:14,951 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:13:14,962 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_set.c[664,677] [2021-12-14 13:13:14,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:13:14,991 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:13:14,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14 WrapperNode [2021-12-14 13:13:14,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:13:14,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:13:14,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:13:14,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:13:14,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,019 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-12-14 13:13:15,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:13:15,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:13:15,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:13:15,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:13:15,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:13:15,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:13:15,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:13:15,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:13:15,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (1/1) ... [2021-12-14 13:13:15,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:13:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:13:15,082 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) [2021-12-14 13:13:15,093 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 [2021-12-14 13:13:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:13:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 13:13:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 13:13:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:13:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:13:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:13:15,172 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:13:15,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:13:15,277 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:13:15,281 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:13:15,281 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 13:13:15,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:13:15 BoogieIcfgContainer [2021-12-14 13:13:15,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:13:15,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:13:15,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:13:15,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:13:15,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:13:14" (1/3) ... [2021-12-14 13:13:15,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91dc1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:13:15, skipping insertion in model container [2021-12-14 13:13:15,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:14" (2/3) ... [2021-12-14 13:13:15,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91dc1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:13:15, skipping insertion in model container [2021-12-14 13:13:15,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:13:15" (3/3) ... [2021-12-14 13:13:15,288 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2021-12-14 13:13:15,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:13:15,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:13:15,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:13:15,352 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 [2021-12-14 13:13:15,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:13:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 13:13:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 13:13:15,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:13:15,379 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:13:15,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:13:15,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:13:15,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1697849372, now seen corresponding path program 1 times [2021-12-14 13:13:15,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:13:15,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269356780] [2021-12-14 13:13:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:13:15,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:13:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:13:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 13:13:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:13:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 13:13:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 13:13:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 13:13:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 13:13:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 13:13:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 13:13:15,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:13:15,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269356780] [2021-12-14 13:13:15,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269356780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:13:15,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:13:15,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 13:13:15,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142005285] [2021-12-14 13:13:15,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:13:15,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 13:13:15,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:13:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 13:13:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:13:15,632 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 13:13:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:13:15,653 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2021-12-14 13:13:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 13:13:15,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2021-12-14 13:13:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:13:15,665 INFO L225 Difference]: With dead ends: 51 [2021-12-14 13:13:15,665 INFO L226 Difference]: Without dead ends: 23 [2021-12-14 13:13:15,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:13:15,675 INFO L933 BasicCegarLoop]: 34 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, 34 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 [2021-12-14 13:13:15,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:13:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-14 13:13:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-14 13:13:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 13:13:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-12-14 13:13:15,713 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 48 [2021-12-14 13:13:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:13:15,714 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-12-14 13:13:15,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 13:13:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-12-14 13:13:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 13:13:15,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:13:15,718 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:13:15,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:13:15,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:13:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:13:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1417424168, now seen corresponding path program 1 times [2021-12-14 13:13:15,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:13:15,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756464406] [2021-12-14 13:13:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:13:15,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:13:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:13:15,797 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 13:13:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:13:15,855 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 13:13:15,856 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 13:13:15,858 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:13:15,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 13:13:15,864 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 13:13:15,866 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:13:15,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:13:15 BoogieIcfgContainer [2021-12-14 13:13:15,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:13:15,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:13:15,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:13:15,902 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:13:15,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:13:15" (3/4) ... [2021-12-14 13:13:15,904 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 13:13:15,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:13:15,920 INFO L158 Benchmark]: Toolchain (without parser) took 1174.22ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 77.0MB in the beginning and 88.8MB in the end (delta: -11.9MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-12-14 13:13:15,923 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 62.4MB in the beginning and 62.3MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:13:15,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.60ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 81.1MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:13:15,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.73ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 79.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:13:15,928 INFO L158 Benchmark]: Boogie Preprocessor took 31.18ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 983.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:13:15,931 INFO L158 Benchmark]: RCFGBuilder took 231.19ms. Allocated memory is still 104.9MB. Free memory was 78.3MB in the beginning and 68.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:13:15,931 INFO L158 Benchmark]: TraceAbstraction took 617.86ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.2MB in the beginning and 89.4MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:13:15,931 INFO L158 Benchmark]: Witness Printer took 2.93ms. Allocated memory is still 125.8MB. Free memory was 89.4MB in the beginning and 88.8MB in the end (delta: 589.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:13:15,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 62.4MB in the beginning and 62.3MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.60ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 81.1MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.73ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 79.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.18ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 983.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.19ms. Allocated memory is still 104.9MB. Free memory was 78.3MB in the beginning and 68.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 617.86ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.2MB in the beginning and 89.4MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.93ms. Allocated memory is still 125.8MB. Free memory was 89.4MB in the beginning and 88.8MB in the end (delta: 589.9kB). Peak memory consumption was 2.1MB. 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 57, overapproximation of to_real at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L31] RET assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) [L32] CALL assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L32] RET assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) [L33] CALL assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L33] RET assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) [L34] CALL assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L34] RET assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) [L35] CALL assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L35] RET assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=49, E=51] [L41] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L41] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [E=49, E=51] [L43] S0 = 0 [L44] S = 0 [L46] i = 0 VAL [E=49, E=51, i=0] [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L51] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=50, E=49, E=51, i=0] [L53] S1 = S0 [L54] S0 = S [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L57] CALL __VERIFIER_assert(S >= -100. && S <= 100.) [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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 8, 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, 34 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, 34 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 112/112 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 [2021-12-14 13:13:15,977 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_set.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 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:13:17,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:13:17,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:13:17,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:13:17,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:13:17,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:13:17,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:13:17,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:13:17,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:13:17,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:13:17,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:13:17,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:13:17,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:13:17,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:13:17,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:13:17,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:13:17,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:13:17,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:13:17,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:13:17,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:13:17,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:13:17,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:13:17,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:13:17,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:13:17,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:13:17,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:13:17,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:13:17,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:13:17,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:13:17,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:13:17,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:13:17,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:13:17,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:13:17,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:13:17,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:13:17,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:13:17,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:13:17,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:13:17,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:13:17,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:13:17,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:13:17,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 13:13:17,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:13:17,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:13:17,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:13:17,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:13:17,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:13:17,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:13:17,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:13:17,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:13:17,888 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:13:17,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:13:17,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:13:17,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:13:17,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:13:17,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:13:17,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:13:17,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:13:17,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 13:13:17,890 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 13:13:17,890 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 13:13:17,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:13:17,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:13:17,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:13:17,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:13:17,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:13:17,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:13:17,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:13:17,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:13:17,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:13:17,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:13:17,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:13:17,891 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 13:13:17,891 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 13:13:17,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:13:17,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:13:17,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:13:17,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:13:17,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 13:13:17,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2021-12-14 13:13:18,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:13:18,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:13:18,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:13:18,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:13:18,161 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:13:18,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_set.c [2021-12-14 13:13:18,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11225123d/b460de2f599e4694bb42beaf822f3ee9/FLAG197347239 [2021-12-14 13:13:18,518 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:13:18,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c [2021-12-14 13:13:18,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11225123d/b460de2f599e4694bb42beaf822f3ee9/FLAG197347239 [2021-12-14 13:13:18,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11225123d/b460de2f599e4694bb42beaf822f3ee9 [2021-12-14 13:13:18,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:13:18,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:13:18,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:13:18,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:13:18,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:13:18,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:13:18" (1/1) ... [2021-12-14 13:13:18,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30476038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:18, skipping insertion in model container [2021-12-14 13:13:18,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:13:18" (1/1) ... [2021-12-14 13:13:18,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:13:18,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:13:19,060 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_set.c[664,677] [2021-12-14 13:13:19,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:13:19,077 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:13:19,084 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_set.c[664,677] [2021-12-14 13:13:19,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:13:19,097 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:13:19,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19 WrapperNode [2021-12-14 13:13:19,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:13:19,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:13:19,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:13:19,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:13:19,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,134 INFO L137 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2021-12-14 13:13:19,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:13:19,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:13:19,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:13:19,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:13:19,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:13:19,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:13:19,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:13:19,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:13:19,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (1/1) ... [2021-12-14 13:13:19,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:13:19,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:13:19,190 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) [2021-12-14 13:13:19,195 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 [2021-12-14 13:13:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:13:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 13:13:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 13:13:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 13:13:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:13:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:13:19,267 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:13:19,268 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:13:21,664 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:13:21,674 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:13:21,676 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 13:13:21,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:13:21 BoogieIcfgContainer [2021-12-14 13:13:21,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:13:21,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:13:21,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:13:21,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:13:21,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:13:18" (1/3) ... [2021-12-14 13:13:21,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bebf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:13:21, skipping insertion in model container [2021-12-14 13:13:21,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:13:19" (2/3) ... [2021-12-14 13:13:21,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bebf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:13:21, skipping insertion in model container [2021-12-14 13:13:21,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:13:21" (3/3) ... [2021-12-14 13:13:21,684 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2021-12-14 13:13:21,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:13:21,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:13:21,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:13:21,727 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 [2021-12-14 13:13:21,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:13:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 13:13:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 13:13:21,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:13:21,749 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:13:21,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:13:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:13:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1697849372, now seen corresponding path program 1 times [2021-12-14 13:13:21,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:13:21,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614566404] [2021-12-14 13:13:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:13:21,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:13:21,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:13:21,774 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) [2021-12-14 13:13:21,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 13:13:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:22,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 13:13:22,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:13:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-14 13:13:23,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:13:23,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:13:23,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614566404] [2021-12-14 13:13:23,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614566404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:13:23,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:13:23,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 13:13:23,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36632058] [2021-12-14 13:13:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:13:23,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 13:13:23,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:13:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 13:13:23,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:13:23,257 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 13:13:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:13:23,277 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2021-12-14 13:13:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 13:13:23,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2021-12-14 13:13:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:13:23,289 INFO L225 Difference]: With dead ends: 51 [2021-12-14 13:13:23,289 INFO L226 Difference]: Without dead ends: 23 [2021-12-14 13:13:23,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:13:23,296 INFO L933 BasicCegarLoop]: 34 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, 34 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 [2021-12-14 13:13:23,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:13:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-14 13:13:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-14 13:13:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 13:13:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-12-14 13:13:23,339 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 48 [2021-12-14 13:13:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:13:23,340 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-12-14 13:13:23,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 13:13:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-12-14 13:13:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 13:13:23,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:13:23,342 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:13:23,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 13:13:23,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:13:23,558 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:13:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:13:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1417424168, now seen corresponding path program 1 times [2021-12-14 13:13:23,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:13:23,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234914556] [2021-12-14 13:13:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:13:23,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:13:23,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:13:23,561 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) [2021-12-14 13:13:23,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 13:13:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:13:31,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-14 13:13:31,593 INFO L286 TraceCheckSpWp]: Computing forward predicates...