./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter2_reinit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter2_reinit.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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 06:30:37,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:30:37,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:30:37,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:30:37,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:30:37,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:30:37,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:30:37,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:30:37,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:30:37,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:30:37,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:30:37,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:30:37,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:30:37,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:30:37,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:30:37,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:30:37,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:30:37,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:30:37,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:30:37,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:30:37,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:30:37,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:30:37,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:30:37,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:30:37,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:30:37,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:30:37,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:30:37,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:30:37,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:30:37,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:30:37,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:30:37,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:30:37,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:30:37,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:30:37,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:30:37,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:30:37,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:30:37,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:30:37,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:30:37,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:30:37,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:30:37,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 06:30:37,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:30:37,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:30:37,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:30:37,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:30:37,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:30:37,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:30:37,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:30:37,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:30:37,760 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:30:37,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:30:37,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:30:37,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 06:30:37,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:30:37,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:30:37,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:30:37,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:30:37,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:30:37,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:30:37,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:30:37,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:30:37,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:30:37,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:30:37,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:30:37,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:30:37,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:30:37,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:30:37,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:30:37,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:30:37,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 06:30:37,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 06:30:37,764 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:30:37,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:30:37,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:30:37,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:30:37,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2021-12-17 06:30:37,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:30:37,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:30:38,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:30:38,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:30:38,002 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:30:38,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-12-17 06:30:38,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a63948b8/06dbb92c1a914db0a4703752d4252fbc/FLAG661a64c11 [2021-12-17 06:30:38,424 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:30:38,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-12-17 06:30:38,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a63948b8/06dbb92c1a914db0a4703752d4252fbc/FLAG661a64c11 [2021-12-17 06:30:38,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a63948b8/06dbb92c1a914db0a4703752d4252fbc [2021-12-17 06:30:38,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:30:38,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:30:38,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:30:38,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:30:38,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:30:38,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49797972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38, skipping insertion in model container [2021-12-17 06:30:38,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:30:38,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:30:38,600 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_reinit.c[700,713] [2021-12-17 06:30:38,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:30:38,620 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:30:38,632 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_reinit.c[700,713] [2021-12-17 06:30:38,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:30:38,651 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:30:38,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38 WrapperNode [2021-12-17 06:30:38,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:30:38,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:30:38,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:30:38,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:30:38,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,678 INFO L137 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2021-12-17 06:30:38,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:30:38,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:30:38,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:30:38,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:30:38,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:30:38,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:30:38,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:30:38,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:30:38,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (1/1) ... [2021-12-17 06:30:38,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:30:38,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:30:38,757 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) [2021-12-17 06:30:38,775 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 [2021-12-17 06:30:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:30:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 06:30:38,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 06:30:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 06:30:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:30:38,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:30:38,837 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:30:38,838 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:30:38,963 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:30:38,983 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:30:38,983 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 06:30:38,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:30:38 BoogieIcfgContainer [2021-12-17 06:30:38,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:30:38,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:30:38,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:30:38,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:30:38,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:30:38" (1/3) ... [2021-12-17 06:30:38,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bf3bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:30:38, skipping insertion in model container [2021-12-17 06:30:38,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:38" (2/3) ... [2021-12-17 06:30:38,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bf3bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:30:38, skipping insertion in model container [2021-12-17 06:30:38,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:30:38" (3/3) ... [2021-12-17 06:30:38,991 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2021-12-17 06:30:38,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:30:38,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:30:39,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:30:39,052 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 [2021-12-17 06:30:39,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:30:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-12-17 06:30:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 06:30:39,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:30:39,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:30:39,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:30:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:30:39,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1343975806, now seen corresponding path program 1 times [2021-12-17 06:30:39,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 06:30:39,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249698626] [2021-12-17 06:30:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:30:39,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 06:30:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:30:39,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 06:30:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:30:39,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 06:30:39,286 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 06:30:39,287 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 06:30:39,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 06:30:39,292 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-17 06:30:39,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 06:30:39,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 06:30:39 BoogieIcfgContainer [2021-12-17 06:30:39,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 06:30:39,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 06:30:39,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 06:30:39,324 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 06:30:39,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:30:38" (3/4) ... [2021-12-17 06:30:39,327 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 06:30:39,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 06:30:39,329 INFO L158 Benchmark]: Toolchain (without parser) took 882.20ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 82.7MB in the beginning and 81.4MB in the end (delta: 1.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-12-17 06:30:39,329 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:30:39,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.39ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 82.3MB in the beginning and 109.1MB in the end (delta: -26.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:30:39,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.01ms. Allocated memory is still 134.2MB. Free memory was 109.1MB in the beginning and 108.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:30:39,332 INFO L158 Benchmark]: Boogie Preprocessor took 38.64ms. Allocated memory is still 134.2MB. Free memory was 108.0MB in the beginning and 106.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 06:30:39,334 INFO L158 Benchmark]: RCFGBuilder took 265.99ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 97.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:30:39,335 INFO L158 Benchmark]: TraceAbstraction took 335.53ms. Allocated memory is still 134.2MB. Free memory was 96.6MB in the beginning and 81.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 06:30:39,336 INFO L158 Benchmark]: Witness Printer took 3.79ms. Allocated memory is still 134.2MB. Free memory was 81.9MB in the beginning and 81.4MB in the end (delta: 517.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:30:39,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.39ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 82.3MB in the beginning and 109.1MB in the end (delta: -26.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.01ms. Allocated memory is still 134.2MB. Free memory was 109.1MB in the beginning and 108.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.64ms. Allocated memory is still 134.2MB. Free memory was 108.0MB in the beginning and 106.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 265.99ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 97.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 335.53ms. Allocated memory is still 134.2MB. Free memory was 96.6MB in the beginning and 81.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.79ms. Allocated memory is still 134.2MB. Free memory was 81.9MB in the beginning and 81.4MB in the end (delta: 517.9kB). 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: 18]: 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 53, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L23] double E, E0, E1, S0, S1, S; [L24] int i; [L26] E = __VERIFIER_nondet_double() [L27] E0 = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(E >= 0. && E <= 1.) [L29] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L29] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L31] S0 = 0 [L32] S = 0 [L34] i = 0 VAL [i=0] [L34] COND TRUE i <= 1000000 [L36] E1 = E0 [L37] E0 = E [L39] E = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=50, E=51, E=49, i=0] [L42] COND TRUE __VERIFIER_nondet_int() [L43] E1 = E [L44] E0 = E [L45] S0 = E [L46] S = E VAL [E=50, E=50, E=50, i=0, S=50, S0=50] [L49] S1 = S0 [L50] S0 = S [L51] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L53] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-17 06:30:39,370 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_reinit.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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 06:30:41,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:30:41,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:30:41,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:30:41,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:30:41,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:30:41,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:30:41,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:30:41,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:30:41,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:30:41,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:30:41,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:30:41,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:30:41,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:30:41,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:30:41,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:30:41,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:30:41,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:30:41,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:30:41,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:30:41,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:30:41,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:30:41,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:30:41,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:30:41,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:30:41,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:30:41,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:30:41,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:30:41,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:30:41,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:30:41,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:30:41,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:30:41,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:30:41,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:30:41,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:30:41,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:30:41,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:30:41,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:30:41,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:30:41,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:30:41,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:30:41,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 06:30:41,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:30:41,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:30:41,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:30:41,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:30:41,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:30:41,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:30:41,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:30:41,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:30:41,309 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:30:41,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:30:41,310 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:30:41,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:30:41,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:30:41,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:30:41,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:30:41,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:30:41,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:30:41,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:30:41,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:30:41,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:30:41,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:30:41,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:30:41,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:30:41,313 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 06:30:41,313 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 06:30:41,313 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:30:41,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:30:41,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:30:41,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:30:41,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 06:30:41,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2021-12-17 06:30:41,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:30:41,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:30:41,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:30:41,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:30:41,645 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:30:41,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-12-17 06:30:41,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a8d91b5/e889463ebedb4bc1a3b298cd50337498/FLAG210de164b [2021-12-17 06:30:42,019 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:30:42,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-12-17 06:30:42,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a8d91b5/e889463ebedb4bc1a3b298cd50337498/FLAG210de164b [2021-12-17 06:30:42,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a8d91b5/e889463ebedb4bc1a3b298cd50337498 [2021-12-17 06:30:42,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:30:42,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:30:42,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:30:42,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:30:42,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:30:42,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ac0e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42, skipping insertion in model container [2021-12-17 06:30:42,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:30:42,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:30:42,593 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_reinit.c[700,713] [2021-12-17 06:30:42,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:30:42,621 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:30:42,638 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_reinit.c[700,713] [2021-12-17 06:30:42,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:30:42,676 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:30:42,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42 WrapperNode [2021-12-17 06:30:42,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:30:42,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:30:42,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:30:42,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:30:42,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,713 INFO L137 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2021-12-17 06:30:42,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:30:42,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:30:42,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:30:42,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:30:42,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:30:42,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:30:42,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:30:42,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:30:42,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (1/1) ... [2021-12-17 06:30:42,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:30:42,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:30:42,761 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) [2021-12-17 06:30:42,762 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 [2021-12-17 06:30:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:30:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 06:30:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 06:30:42,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 06:30:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:30:42,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:30:42,836 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:30:42,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:30:45,198 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:30:45,202 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:30:45,202 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 06:30:45,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:30:45 BoogieIcfgContainer [2021-12-17 06:30:45,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:30:45,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:30:45,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:30:45,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:30:45,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:30:42" (1/3) ... [2021-12-17 06:30:45,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1511f0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:30:45, skipping insertion in model container [2021-12-17 06:30:45,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:30:42" (2/3) ... [2021-12-17 06:30:45,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1511f0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:30:45, skipping insertion in model container [2021-12-17 06:30:45,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:30:45" (3/3) ... [2021-12-17 06:30:45,223 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2021-12-17 06:30:45,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:30:45,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:30:45,261 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:30:45,266 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 [2021-12-17 06:30:45,267 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:30:45,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-12-17 06:30:45,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-17 06:30:45,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:30:45,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:30:45,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:30:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:30:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash 526466326, now seen corresponding path program 1 times [2021-12-17 06:30:45,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:30:45,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305965231] [2021-12-17 06:30:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:30:45,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:30:45,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:30:45,295 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) [2021-12-17 06:30:45,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 06:30:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:30:46,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 06:30:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:30:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 06:30:46,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:30:46,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:30:46,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305965231] [2021-12-17 06:30:46,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305965231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:30:46,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:30:46,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 06:30:46,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225201823] [2021-12-17 06:30:46,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:30:46,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 06:30:46,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:30:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 06:30:46,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:30:46,718 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 06:30:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:30:46,731 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2021-12-17 06:30:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 06:30:46,734 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 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 23 [2021-12-17 06:30:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:30:46,739 INFO L225 Difference]: With dead ends: 41 [2021-12-17 06:30:46,739 INFO L226 Difference]: Without dead ends: 18 [2021-12-17 06:30:46,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:30:46,745 INFO L933 BasicCegarLoop]: 25 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, 25 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 [2021-12-17 06:30:46,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 06:30:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-17 06:30:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-17 06:30:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-12-17 06:30:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-12-17 06:30:46,769 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 23 [2021-12-17 06:30:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:30:46,770 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-17 06:30:46,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 06:30:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-12-17 06:30:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-17 06:30:46,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:30:46,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:30:46,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-17 06:30:46,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 06:30:47,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:30:47,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:30:47,000 INFO L85 PathProgramCache]: Analyzing trace with hash -398587304, now seen corresponding path program 1 times [2021-12-17 06:30:47,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:30:47,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932235674] [2021-12-17 06:30:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:30:47,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:30:47,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:30:47,003 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) [2021-12-17 06:30:47,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 06:31:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:31:38,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-17 06:31:38,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:33:19,745 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~E1~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse1 (fp.geq .cse2 (fp.neg .cse3))) (.cse0 (fp.leq .cse2 .cse3))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse0) (not .cse1))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 .cse0)))) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)))) is different from false [2021-12-17 06:33:21,809 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~E1~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse1 (fp.geq .cse2 (fp.neg .cse3))) (.cse0 (fp.leq .cse2 .cse3))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse0) (not .cse1))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 .cse0)))) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)))) is different from true [2021-12-17 06:34:11,064 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~E1~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)))) is different from false [2021-12-17 06:34:13,145 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~E1~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)))) is different from true [2021-12-17 06:34:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 06:34:13,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:34:13,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:34:13,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932235674] [2021-12-17 06:34:13,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932235674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:34:13,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:34:13,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 06:34:13,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94332352] [2021-12-17 06:34:13,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:34:13,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 06:34:13,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:34:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 06:34:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=26, Unknown=4, NotChecked=22, Total=72 [2021-12-17 06:34:13,149 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-12-17 06:34:16,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 06:34:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:34:16,498 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-17 06:34:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 06:34:16,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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 23 [2021-12-17 06:34:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:34:16,500 INFO L225 Difference]: With dead ends: 30 [2021-12-17 06:34:16,500 INFO L226 Difference]: Without dead ends: 28 [2021-12-17 06:34:16,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=25, Invalid=35, Unknown=4, NotChecked=26, Total=90 [2021-12-17 06:34:16,502 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 06:34:16,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 1 Unknown, 40 Unchecked, 3.2s Time] [2021-12-17 06:34:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-17 06:34:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-12-17 06:34:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 06:34:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-17 06:34:16,510 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-12-17 06:34:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:34:16,510 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-17 06:34:16,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-12-17 06:34:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-17 06:34:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-17 06:34:16,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:34:16,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:34:16,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 06:34:16,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 06:34:16,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:34:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:34:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -398527722, now seen corresponding path program 1 times [2021-12-17 06:34:16,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:34:16,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238793154] [2021-12-17 06:34:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:34:16,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:34:16,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:34:16,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 06:34:16,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-17 06:34:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:34:25,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-17 06:34:25,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... Killed by 15