./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/rlim_invariant.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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:19:13,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:19:13,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:19:13,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:19:13,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:19:13,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:19:13,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:19:13,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:19:13,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:19:13,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:19:13,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:19:13,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:19:13,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:19:13,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:19:13,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:19:13,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:19:13,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:19:13,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:19:13,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:19:13,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:19:13,614 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:19:13,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:19:13,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:19:13,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:19:13,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:19:13,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:19:13,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:19:13,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:19:13,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:19:13,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:19:13,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:19:13,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:19:13,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:19:13,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:19:13,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:19:13,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:19:13,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:19:13,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:19:13,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:19:13,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:19:13,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:19:13,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:19:13,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:19:13,682 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:19:13,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:19:13,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:19:13,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:19:13,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:19:13,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:19:13,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:19:13,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:19:13,685 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:19:13,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:19:13,686 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:19:13,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:19:13,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:19:13,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:19:13,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:19:13,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:19:13,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:19:13,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:19:13,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:19:13,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:19:13,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:19:13,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:19:13,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:19:13,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:19:13,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:19:13,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:19:13,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:19:13,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:19:13,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:19:13,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:19:13,690 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:19:13,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:19:13,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:19:13,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-07-21 01:19:13,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:19:13,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:19:13,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:19:13,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:19:13,991 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:19:13,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-21 01:19:14,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4335f6341/ded7ccda94584cfbb684347a61ca1e01/FLAG0351b14dd [2022-07-21 01:19:14,445 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:19:14,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-21 01:19:14,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4335f6341/ded7ccda94584cfbb684347a61ca1e01/FLAG0351b14dd [2022-07-21 01:19:14,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4335f6341/ded7ccda94584cfbb684347a61ca1e01 [2022-07-21 01:19:14,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:19:14,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:19:14,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:19:14,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:19:14,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:19:14,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8165cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14, skipping insertion in model container [2022-07-21 01:19:14,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:19:14,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:19:14,644 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/rlim_invariant.c[451,464] [2022-07-21 01:19:14,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:19:14,670 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:19:14,686 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/rlim_invariant.c[451,464] [2022-07-21 01:19:14,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:19:14,701 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:19:14,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14 WrapperNode [2022-07-21 01:19:14,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:19:14,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:19:14,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:19:14,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:19:14,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,748 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-07-21 01:19:14,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:19:14,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:19:14,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:19:14,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:19:14,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:19:14,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:19:14,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:19:14,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:19:14,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (1/1) ... [2022-07-21 01:19:14,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:19:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:19:14,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:19:14,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:19:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:19:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 01:19:14,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 01:19:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:19:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:19:14,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:19:14,919 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:19:14,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:19:15,051 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:19:15,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:19:15,056 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:19:15,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:15 BoogieIcfgContainer [2022-07-21 01:19:15,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:19:15,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:19:15,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:19:15,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:19:15,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:19:14" (1/3) ... [2022-07-21 01:19:15,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620e5747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:15, skipping insertion in model container [2022-07-21 01:19:15,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:14" (2/3) ... [2022-07-21 01:19:15,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620e5747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:15, skipping insertion in model container [2022-07-21 01:19:15,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:15" (3/3) ... [2022-07-21 01:19:15,114 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-07-21 01:19:15,129 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:19:15,130 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:19:15,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:19:15,172 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3239c7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45c8c53b [2022-07-21 01:19:15,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:19:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:19:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:19:15,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:19:15,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:19:15,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:19:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:19:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2022-07-21 01:19:15,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:19:15,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632865668] [2022-07-21 01:19:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:19:15,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:19:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 01:19:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 01:19:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 01:19:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:19:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632865668] [2022-07-21 01:19:15,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632865668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:19:15,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:19:15,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:19:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074005411] [2022-07-21 01:19:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:19:15,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:19:15,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:19:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:19:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:19:15,443 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:19:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:19:15,464 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-07-21 01:19:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:19:15,466 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-21 01:19:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:19:15,472 INFO L225 Difference]: With dead ends: 42 [2022-07-21 01:19:15,472 INFO L226 Difference]: Without dead ends: 18 [2022-07-21 01:19:15,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:19:15,479 INFO L413 NwaCegarLoop]: 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 [2022-07-21 01:19:15,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:19:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-21 01:19:15,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-21 01:19:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:19:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-07-21 01:19:15,518 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2022-07-21 01:19:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:19:15,518 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-07-21 01:19:15,519 INFO L496 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:19:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-07-21 01:19:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:19:15,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:19:15,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:19:15,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:19:15,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:19:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:19:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2022-07-21 01:19:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:19:15,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672023878] [2022-07-21 01:19:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:19:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:19:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:19:15,562 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:19:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:19:15,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:19:15,618 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:19:15,620 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:19:15,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:19:15,627 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:19:15,631 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:19:15,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:19:15 BoogieIcfgContainer [2022-07-21 01:19:15,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:19:15,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:19:15,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:19:15,660 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:19:15,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:15" (3/4) ... [2022-07-21 01:19:15,663 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:19:15,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:19:15,665 INFO L158 Benchmark]: Toolchain (without parser) took 1190.99ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.2MB in the beginning and 30.4MB in the end (delta: -6.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-07-21 01:19:15,665 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.8MB in the beginning and 30.7MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:19:15,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.62ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.0MB in the beginning and 42.5MB in the end (delta: -18.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-07-21 01:19:15,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.09ms. Allocated memory is still 58.7MB. Free memory was 42.5MB in the beginning and 41.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:19:15,671 INFO L158 Benchmark]: Boogie Preprocessor took 40.75ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 40.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:19:15,671 INFO L158 Benchmark]: RCFGBuilder took 289.79ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 42.2MB in the end (delta: -2.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2022-07-21 01:19:15,671 INFO L158 Benchmark]: TraceAbstraction took 576.18ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 30.6MB in the end (delta: 11.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-07-21 01:19:15,672 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 58.7MB. Free memory was 30.6MB in the beginning and 30.4MB in the end (delta: 244.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:19:15,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.8MB in the beginning and 30.7MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.62ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.0MB in the beginning and 42.5MB in the end (delta: -18.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.09ms. Allocated memory is still 58.7MB. Free memory was 42.5MB in the beginning and 41.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.75ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 40.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.79ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 42.2MB in the end (delta: -2.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 576.18ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 30.6MB in the end (delta: 11.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 58.7MB. Free memory was 30.6MB in the beginning and 30.4MB in the end (delta: 244.3kB). 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: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 VAL [i=0] [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L23] CALL assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L23] RET assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [D=49, i=0, X=50] [L24] CALL assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L24] RET assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [D=49, i=0, X=50] [L26] S = Y [L27] Y = X [L28] R = X - S VAL [D=49, i=0, S=51, X=50, Y=50] [L29] COND TRUE R <= -D [L29] Y = S - D VAL [D=49, i=0, S=51, X=50] [L32] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 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, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:19:15,721 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/rlim_invariant.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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:19:17,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:19:17,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:19:17,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:19:17,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:19:17,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:19:17,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:19:17,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:19:17,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:19:17,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:19:17,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:19:17,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:19:17,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:19:17,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:19:17,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:19:17,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:19:17,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:19:17,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:19:17,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:19:17,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:19:17,748 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:19:17,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:19:17,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:19:17,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:19:17,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:19:17,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:19:17,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:19:17,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:19:17,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:19:17,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:19:17,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:19:17,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:19:17,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:19:17,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:19:17,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:19:17,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:19:17,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:19:17,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:19:17,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:19:17,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:19:17,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:19:17,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:19:17,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:19:17,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:19:17,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:19:17,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:19:17,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:19:17,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:19:17,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:19:17,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:19:17,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:19:17,806 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:19:17,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:19:17,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:19:17,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:19:17,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:19:17,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:19:17,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:19:17,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:19:17,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:19:17,808 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:19:17,809 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:19:17,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:19:17,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:19:17,809 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:19:17,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:19:17,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:19:17,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:19:17,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:19:17,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:19:17,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:19:17,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:19:17,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:19:17,811 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:19:17,811 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:19:17,811 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:19:17,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:19:17,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:19:17,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:19:17,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-07-21 01:19:18,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:19:18,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:19:18,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:19:18,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:19:18,147 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:19:18,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-21 01:19:18,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8bef8265/650799c54bf1402cbd1299c036e63115/FLAG7920d989e [2022-07-21 01:19:18,641 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:19:18,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-07-21 01:19:18,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8bef8265/650799c54bf1402cbd1299c036e63115/FLAG7920d989e [2022-07-21 01:19:18,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8bef8265/650799c54bf1402cbd1299c036e63115 [2022-07-21 01:19:18,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:19:18,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:19:18,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:19:18,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:19:18,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:19:18,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d972e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18, skipping insertion in model container [2022-07-21 01:19:18,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:19:18,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:19:18,822 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/rlim_invariant.c[451,464] [2022-07-21 01:19:18,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:19:18,851 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:19:18,869 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/rlim_invariant.c[451,464] [2022-07-21 01:19:18,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:19:18,905 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:19:18,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18 WrapperNode [2022-07-21 01:19:18,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:19:18,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:19:18,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:19:18,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:19:18,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,941 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-07-21 01:19:18,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:19:18,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:19:18,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:19:18,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:19:18,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:18,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:19:18,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:19:18,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:19:18,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:19:18,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2022-07-21 01:19:19,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:19:19,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:19:19,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:19:19,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:19:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:19:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:19:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 01:19:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 01:19:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:19:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:19:19,127 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:19:19,129 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:19:19,375 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:19:19,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:19:19,380 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:19:19,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:19 BoogieIcfgContainer [2022-07-21 01:19:19,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:19:19,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:19:19,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:19:19,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:19:19,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:19:18" (1/3) ... [2022-07-21 01:19:19,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac5bec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:19, skipping insertion in model container [2022-07-21 01:19:19,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (2/3) ... [2022-07-21 01:19:19,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac5bec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:19, skipping insertion in model container [2022-07-21 01:19:19,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:19" (3/3) ... [2022-07-21 01:19:19,402 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-07-21 01:19:19,418 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:19:19,419 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:19:19,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:19:19,491 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a8eb7de, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13ef0f3 [2022-07-21 01:19:19,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:19:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:19:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:19:19,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:19:19,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:19:19,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:19:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:19:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2022-07-21 01:19:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:19:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803992592] [2022-07-21 01:19:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:19:19,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:19:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:19:19,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:19:19,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:19:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:19,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:19:19,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:19:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 01:19:19,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:19:19,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:19:19,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803992592] [2022-07-21 01:19:19,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803992592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:19:19,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:19:19,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:19:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269042146] [2022-07-21 01:19:19,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:19:19,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:19:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:19:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:19:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:19:19,729 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:19:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:19:19,746 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-07-21 01:19:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:19:19,748 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-21 01:19:19,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:19:19,756 INFO L225 Difference]: With dead ends: 42 [2022-07-21 01:19:19,756 INFO L226 Difference]: Without dead ends: 18 [2022-07-21 01:19:19,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:19:19,761 INFO L413 NwaCegarLoop]: 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 [2022-07-21 01:19:19,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:19:19,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-21 01:19:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-21 01:19:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:19:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-07-21 01:19:19,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2022-07-21 01:19:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:19:19,801 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-07-21 01:19:19,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:19:19,802 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-07-21 01:19:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:19:19,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:19:19,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:19:19,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:19:20,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:19:20,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:19:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:19:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2022-07-21 01:19:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:19:20,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519984133] [2022-07-21 01:19:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:19:20,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:19:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:19:20,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:19:20,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:19:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:20,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:19:20,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:19:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 01:19:20,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:19:20,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:19:20,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519984133] [2022-07-21 01:19:20,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519984133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:19:20,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:19:20,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 01:19:20,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958023226] [2022-07-21 01:19:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:19:20,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 01:19:20,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:19:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 01:19:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-21 01:19:20,580 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:19:21,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:19:21,263 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-07-21 01:19:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 01:19:21,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-21 01:19:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:19:21,275 INFO L225 Difference]: With dead ends: 40 [2022-07-21 01:19:21,276 INFO L226 Difference]: Without dead ends: 38 [2022-07-21 01:19:21,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 01:19:21,277 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 01:19:21,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 104 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 15 Unchecked, 0.5s Time] [2022-07-21 01:19:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-21 01:19:21,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2022-07-21 01:19:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2022-07-21 01:19:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-07-21 01:19:21,286 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2022-07-21 01:19:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:19:21,286 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-07-21 01:19:21,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:19:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-07-21 01:19:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 01:19:21,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:19:21,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:19:21,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:19:21,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:19:21,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:19:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:19:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1173892842, now seen corresponding path program 1 times [2022-07-21 01:19:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:19:21,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489147315] [2022-07-21 01:19:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:19:21,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:19:21,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:19:21,503 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) [2022-07-21 01:19:21,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 01:19:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:21,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:19:21,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:19:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 01:19:21,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:19:21,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:19:21,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489147315] [2022-07-21 01:19:21,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489147315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:19:21,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:19:21,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 01:19:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573919975] [2022-07-21 01:19:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:19:21,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 01:19:21,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:19:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 01:19:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-21 01:19:21,888 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:19:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:19:22,696 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-07-21 01:19:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 01:19:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-21 01:19:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:19:22,698 INFO L225 Difference]: With dead ends: 50 [2022-07-21 01:19:22,698 INFO L226 Difference]: Without dead ends: 48 [2022-07-21 01:19:22,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-21 01:19:22,700 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 01:19:22,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 88 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 27 Unchecked, 0.6s Time] [2022-07-21 01:19:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-21 01:19:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 30. [2022-07-21 01:19:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-07-21 01:19:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-07-21 01:19:22,708 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2022-07-21 01:19:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:19:22,708 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-07-21 01:19:22,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:19:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-07-21 01:19:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 01:19:22,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:19:22,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:19:22,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 01:19:22,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:19:22,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:19:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:19:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1173833260, now seen corresponding path program 1 times [2022-07-21 01:19:22,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:19:22,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369964652] [2022-07-21 01:19:22,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:19:22,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:19:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:19:22,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:19:22,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 01:19:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 01:19:22,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:19:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 01:19:23,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 01:19:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 01:19:23,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:19:23,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369964652] [2022-07-21 01:19:23,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369964652] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 01:19:23,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 01:19:23,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 01:19:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212563550] [2022-07-21 01:19:23,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 01:19:23,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 01:19:23,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:19:23,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 01:19:23,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 01:19:23,429 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 01:19:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:19:24,525 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-07-21 01:19:24,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 01:19:24,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2022-07-21 01:19:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:19:24,527 INFO L225 Difference]: With dead ends: 45 [2022-07-21 01:19:24,527 INFO L226 Difference]: Without dead ends: 43 [2022-07-21 01:19:24,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-07-21 01:19:24,531 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 01:19:24,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 135 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 01:19:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-21 01:19:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-07-21 01:19:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-07-21 01:19:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-07-21 01:19:24,541 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2022-07-21 01:19:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:19:24,541 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-07-21 01:19:24,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 01:19:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-07-21 01:19:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 01:19:24,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:19:24,543 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:19:24,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 01:19:24,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:19:24,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:19:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:19:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1809540222, now seen corresponding path program 1 times [2022-07-21 01:19:24,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:19:24,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345412876] [2022-07-21 01:19:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:19:24,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:19:24,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:19:24,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:19:24,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 01:19:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:19:24,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 01:19:24,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:19:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 01:19:58,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 01:20:24,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:20:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345412876] [2022-07-21 01:20:24,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345412876] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:20:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [333673722] [2022-07-21 01:20:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:20:24,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-21 01:20:24,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-21 01:20:24,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-21 01:20:24,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-07-21 01:20:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:20:25,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 01:20:25,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:20:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 9 refuted. 1 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 01:20:46,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 01:21:01,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [333673722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:21:01,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 01:21:01,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 19 [2022-07-21 01:21:01,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447638077] [2022-07-21 01:21:01,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 01:21:01,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 01:21:01,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:21:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 01:21:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=610, Unknown=8, NotChecked=0, Total=756 [2022-07-21 01:21:01,037 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 01:21:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:21:36,824 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2022-07-21 01:21:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 01:21:36,824 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2022-07-21 01:21:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:21:36,825 INFO L225 Difference]: With dead ends: 55 [2022-07-21 01:21:36,825 INFO L226 Difference]: Without dead ends: 53 [2022-07-21 01:21:36,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 104.7s TimeCoverageRelationStatistics Valid=246, Invalid=1076, Unknown=10, NotChecked=0, Total=1332 [2022-07-21 01:21:36,827 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 01:21:36,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 87 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 75 Unchecked, 0.3s Time] [2022-07-21 01:21:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-21 01:21:36,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2022-07-21 01:21:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 01:21:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-07-21 01:21:36,834 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 35 [2022-07-21 01:21:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:21:36,834 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-07-21 01:21:36,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 15 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 01:21:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-07-21 01:21:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 01:21:36,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:21:36,836 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:21:36,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-07-21 01:21:37,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 01:21:37,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:21:37,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:21:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:21:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -259447071, now seen corresponding path program 1 times [2022-07-21 01:21:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:21:37,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651444013] [2022-07-21 01:21:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:21:37,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:21:37,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:21:37,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:21:37,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 01:21:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:21:37,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 01:21:37,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:22:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 01:22:21,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 01:23:09,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:23:09,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651444013] [2022-07-21 01:23:09,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651444013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:23:09,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1060490590] [2022-07-21 01:23:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:23:09,688 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-21 01:23:09,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-21 01:23:09,691 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-21 01:23:09,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-07-21 01:23:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:23:10,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 01:23:10,115 INFO L286 TraceCheckSpWp]: Computing forward predicates...