./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/bitvector/num_conversion_2.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 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:43:45,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:43:45,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:43:45,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:43:45,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:43:45,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:43:45,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:43:45,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:43:45,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:43:45,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:43:45,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:43:45,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:43:45,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:43:45,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:43:45,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:43:45,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:43:45,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:43:45,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:43:45,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:43:45,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:43:45,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:43:45,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:43:45,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:43:45,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:43:45,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:43:45,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:43:45,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:43:45,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:43:45,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:43:45,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:43:45,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:43:45,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:43:45,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:43:45,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:43:45,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:43:45,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:43:45,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:43:45,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:43:45,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:43:45,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:43:45,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:43:45,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 05:43:45,893 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:43:45,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:43:45,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:43:45,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:43:45,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:43:45,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:43:45,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:43:45,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:43:45,895 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:43:45,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:43:45,895 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:43:45,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 05:43:45,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:43:45,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:43:45,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:43:45,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:43:45,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:43:45,896 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:43:45,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:43:45,896 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:43:45,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:43:45,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:43:45,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:43:45,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:43:45,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:43:45,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:43:45,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:43:45,898 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:43:45,899 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-17 05:43:46,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:43:46,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:43:46,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:43:46,187 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:43:46,188 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:43:46,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 05:43:47,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:43:47,517 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:43:47,518 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 05:43:47,523 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101c3f135/9dd0ceac1e7e4f3b977449961462b6b6/FLAG41b58682d [2023-02-17 05:43:47,537 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101c3f135/9dd0ceac1e7e4f3b977449961462b6b6 [2023-02-17 05:43:47,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:43:47,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:43:47,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:43:47,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:43:47,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:43:47,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241d3b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47, skipping insertion in model container [2023-02-17 05:43:47,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:43:47,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:43:47,668 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 05:43:47,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:43:47,688 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:43:47,696 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 05:43:47,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:43:47,710 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:43:47,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47 WrapperNode [2023-02-17 05:43:47,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:43:47,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:43:47,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:43:47,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:43:47,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,730 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-17 05:43:47,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:43:47,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:43:47,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:43:47,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:43:47,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:43:47,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:43:47,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:43:47,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:43:47,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (1/1) ... [2023-02-17 05:43:47,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:43:47,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:43:47,798 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) [2023-02-17 05:43:47,803 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 [2023-02-17 05:43:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:43:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:43:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:43:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 05:43:47,890 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:43:47,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:43:48,018 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:43:48,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:43:48,022 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 05:43:48,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:43:48 BoogieIcfgContainer [2023-02-17 05:43:48,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:43:48,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:43:48,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:43:48,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:43:48,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:43:47" (1/3) ... [2023-02-17 05:43:48,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762e2000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:43:48, skipping insertion in model container [2023-02-17 05:43:48,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:47" (2/3) ... [2023-02-17 05:43:48,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762e2000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:43:48, skipping insertion in model container [2023-02-17 05:43:48,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:43:48" (3/3) ... [2023-02-17 05:43:48,029 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-17 05:43:48,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:43:48,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:43:48,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:43:48,074 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d3850bf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:43:48,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:43:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 05:43:48,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:48,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 05:43:48,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-17 05:43:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:43:48,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688049198] [2023-02-17 05:43:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:43:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:48,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:43:48,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688049198] [2023-02-17 05:43:48,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688049198] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:43:48,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:43:48,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 05:43:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584032697] [2023-02-17 05:43:48,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:43:48,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 05:43:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:43:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 05:43:48,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:43:48,242 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:48,251 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-17 05:43:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 05:43:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 05:43:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:48,257 INFO L225 Difference]: With dead ends: 21 [2023-02-17 05:43:48,257 INFO L226 Difference]: Without dead ends: 9 [2023-02-17 05:43:48,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:43:48,260 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2023-02-17 05:43:48,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:43:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-17 05:43:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-17 05:43:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-17 05:43:48,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-17 05:43:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:48,281 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-17 05:43:48,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-17 05:43:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 05:43:48,282 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:48,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 05:43:48,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 05:43:48,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-17 05:43:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:43:48,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396872545] [2023-02-17 05:43:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:43:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:43:48,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396872545] [2023-02-17 05:43:48,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396872545] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:43:48,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:43:48,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 05:43:48,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857557573] [2023-02-17 05:43:48,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:43:48,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 05:43:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:43:48,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 05:43:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 05:43:48,379 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:48,399 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-17 05:43:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 05:43:48,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 05:43:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:48,409 INFO L225 Difference]: With dead ends: 16 [2023-02-17 05:43:48,409 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 05:43:48,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 05:43:48,410 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:43:48,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:43:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 05:43:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-17 05:43:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 05:43:48,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-17 05:43:48,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:48,417 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 05:43:48,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 05:43:48,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 05:43:48,417 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:48,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:43:48,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 05:43:48,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-17 05:43:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:43:48,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827971649] [2023-02-17 05:43:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:48,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:43:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:48,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:43:48,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827971649] [2023-02-17 05:43:48,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827971649] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 05:43:48,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890042780] [2023-02-17 05:43:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:48,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:43:48,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:43:48,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:43:48,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 05:43:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:48,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 05:43:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:43:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:48,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:43:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:48,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890042780] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:43:48,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 05:43:48,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2023-02-17 05:43:48,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950549874] [2023-02-17 05:43:48,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 05:43:48,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 05:43:48,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:43:48,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 05:43:48,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-17 05:43:48,720 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:48,762 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-17 05:43:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 05:43:48,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 05:43:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:48,763 INFO L225 Difference]: With dead ends: 23 [2023-02-17 05:43:48,763 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 05:43:48,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2023-02-17 05:43:48,765 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:43:48,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:43:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 05:43:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 05:43:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 05:43:48,769 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-17 05:43:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:48,769 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 05:43:48,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 05:43:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 05:43:48,770 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:48,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 05:43:48,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 05:43:48,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:43:48,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-17 05:43:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:43:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361112707] [2023-02-17 05:43:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:48,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:43:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:49,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:43:49,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361112707] [2023-02-17 05:43:49,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361112707] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 05:43:49,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458603707] [2023-02-17 05:43:49,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:43:49,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:43:49,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:43:49,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:43:49,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 05:43:49,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:43:49,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:43:49,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 05:43:49,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:43:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:49,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:43:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:49,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458603707] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:43:49,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 05:43:49,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-02-17 05:43:49,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410090927] [2023-02-17 05:43:49,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 05:43:49,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 05:43:49,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:43:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 05:43:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-02-17 05:43:49,324 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:49,439 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-02-17 05:43:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 05:43:49,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-17 05:43:49,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:49,441 INFO L225 Difference]: With dead ends: 35 [2023-02-17 05:43:49,441 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 05:43:49,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2023-02-17 05:43:49,444 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:43:49,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 104 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:43:49,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 05:43:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-17 05:43:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-17 05:43:49,455 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2023-02-17 05:43:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:49,456 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-17 05:43:49,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-17 05:43:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:43:49,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:49,458 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 05:43:49,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 05:43:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 05:43:49,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-17 05:43:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:43:49,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033674142] [2023-02-17 05:43:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:43:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 05:43:49,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 05:43:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 05:43:49,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 05:43:49,733 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 05:43:49,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 05:43:49,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 05:43:49,737 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-02-17 05:43:49,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 05:43:49,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 05:43:49 BoogieIcfgContainer [2023-02-17 05:43:49,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 05:43:49,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 05:43:49,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 05:43:49,788 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 05:43:49,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:43:48" (3/4) ... [2023-02-17 05:43:49,790 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 05:43:49,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 05:43:49,791 INFO L158 Benchmark]: Toolchain (without parser) took 2251.32ms. Allocated memory was 182.5MB in the beginning and 234.9MB in the end (delta: 52.4MB). Free memory was 151.4MB in the beginning and 188.0MB in the end (delta: -36.6MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2023-02-17 05:43:49,791 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:43:49,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.13ms. Allocated memory is still 182.5MB. Free memory was 151.4MB in the beginning and 141.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 05:43:49,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.41ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 140.0MB in the end (delta: 966.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:43:49,793 INFO L158 Benchmark]: Boogie Preprocessor took 22.03ms. Allocated memory is still 182.5MB. Free memory was 140.0MB in the beginning and 139.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 05:43:49,793 INFO L158 Benchmark]: RCFGBuilder took 270.39ms. Allocated memory is still 182.5MB. Free memory was 139.0MB in the beginning and 128.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 05:43:49,793 INFO L158 Benchmark]: TraceAbstraction took 1761.93ms. Allocated memory was 182.5MB in the beginning and 234.9MB in the end (delta: 52.4MB). Free memory was 127.4MB in the beginning and 189.1MB in the end (delta: -61.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:43:49,793 INFO L158 Benchmark]: Witness Printer took 2.94ms. Allocated memory is still 234.9MB. Free memory was 189.1MB in the beginning and 188.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:43:49,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.13ms. Allocated memory is still 182.5MB. Free memory was 151.4MB in the beginning and 141.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.41ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 140.0MB in the end (delta: 966.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.03ms. Allocated memory is still 182.5MB. Free memory was 140.0MB in the beginning and 139.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.39ms. Allocated memory is still 182.5MB. Free memory was 139.0MB in the beginning and 128.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1761.93ms. Allocated memory was 182.5MB in the beginning and 234.9MB in the end (delta: 52.4MB). Free memory was 127.4MB in the beginning and 189.1MB in the end (delta: -61.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.94ms. Allocated memory is still 234.9MB. Free memory was 189.1MB in the beginning and 188.0MB in the end (delta: 1.0MB). 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: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 31, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L24] unsigned char x = __VERIFIER_nondet_uchar(); [L25] unsigned char y; [L26] unsigned char c; [L28] y = 0 [L29] c = 0 VAL [c=0, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=0, i=2, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=0, i=2, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=1, i=2, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=1, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=1, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=2, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=2, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=2, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=3, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=3, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=3, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=4, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=4, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=4, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=5, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=5, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=5, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=6, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=6, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=6, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=7, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=7, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=7, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=8, i=1, x=4, y=0] [L30] COND FALSE !(c < (unsigned char)8) VAL [bit=0, c=8, i=1, x=4, y=0] [L38] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 161 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 48 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 22, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 8 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 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 [2023-02-17 05:43:49,810 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/bitvector/num_conversion_2.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 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:43:51,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:43:51,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:43:51,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:43:51,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:43:51,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:43:51,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:43:51,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:43:51,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:43:51,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:43:51,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:43:51,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:43:51,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:43:51,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:43:51,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:43:51,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:43:51,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:43:51,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:43:51,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:43:51,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:43:51,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:43:51,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:43:51,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:43:51,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:43:51,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:43:51,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:43:51,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:43:51,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:43:51,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:43:51,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:43:51,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:43:51,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:43:51,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:43:51,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:43:51,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:43:51,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:43:51,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:43:51,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:43:51,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:43:51,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:43:51,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:43:51,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-17 05:43:51,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:43:51,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:43:51,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:43:51,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:43:51,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:43:51,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:43:51,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:43:51,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:43:51,912 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:43:51,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:43:51,913 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:43:51,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:43:51,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:43:51,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:43:51,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:43:51,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:43:51,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 05:43:51,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 05:43:51,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 05:43:51,915 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:43:51,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:43:51,915 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:43:51,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:43:51,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:43:51,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:43:51,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:43:51,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:43:51,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:43:51,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:43:51,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:43:51,917 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 05:43:51,917 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 05:43:51,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:43:51,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:43:51,918 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:43:51,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:43:51,918 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 05:43:51,918 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:43:51,918 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-17 05:43:52,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:43:52,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:43:52,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:43:52,228 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:43:52,228 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:43:52,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 05:43:53,427 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:43:53,673 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:43:53,674 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 05:43:53,701 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09b64946/7222cfc642754adaba20a116c960ac31/FLAG35856567e [2023-02-17 05:43:53,720 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09b64946/7222cfc642754adaba20a116c960ac31 [2023-02-17 05:43:53,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:43:53,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:43:53,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:43:53,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:43:53,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:43:53,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:53,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4299e9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53, skipping insertion in model container [2023-02-17 05:43:53,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:53,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:43:53,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:43:53,904 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 05:43:53,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:43:53,930 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:43:53,944 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 05:43:53,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:43:53,963 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:43:53,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53 WrapperNode [2023-02-17 05:43:53,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:43:53,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:43:53,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:43:53,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:43:53,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:53,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:53,994 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-17 05:43:53,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:43:53,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:43:53,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:43:53,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:43:54,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:43:54,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:43:54,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:43:54,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:43:54,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (1/1) ... [2023-02-17 05:43:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:43:54,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:43:54,067 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) [2023-02-17 05:43:54,069 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 [2023-02-17 05:43:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:43:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:43:54,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:43:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 05:43:54,147 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:43:54,148 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:43:54,218 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:43:54,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:43:54,222 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 05:43:54,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:43:54 BoogieIcfgContainer [2023-02-17 05:43:54,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:43:54,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:43:54,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:43:54,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:43:54,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:43:53" (1/3) ... [2023-02-17 05:43:54,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6d7581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:43:54, skipping insertion in model container [2023-02-17 05:43:54,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:43:53" (2/3) ... [2023-02-17 05:43:54,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6d7581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:43:54, skipping insertion in model container [2023-02-17 05:43:54,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:43:54" (3/3) ... [2023-02-17 05:43:54,228 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-17 05:43:54,239 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:43:54,239 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:43:54,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:43:54,330 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4fe77b0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:43:54,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:43:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 05:43:54,337 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:54,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 05:43:54,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:54,341 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-17 05:43:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:43:54,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929699063] [2023-02-17 05:43:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:54,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:43:54,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:43:54,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 05:43:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:54,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 05:43:54,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:43:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:54,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:43:54,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:43:54,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929699063] [2023-02-17 05:43:54,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929699063] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:43:54,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:43:54,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 05:43:54,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209557962] [2023-02-17 05:43:54,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:43:54,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 05:43:54,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:43:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 05:43:54,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:43:54,425 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:54,434 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-17 05:43:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 05:43:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 05:43:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:54,440 INFO L225 Difference]: With dead ends: 21 [2023-02-17 05:43:54,440 INFO L226 Difference]: Without dead ends: 9 [2023-02-17 05:43:54,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:43:54,444 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2023-02-17 05:43:54,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:43:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-17 05:43:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-17 05:43:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-17 05:43:54,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-17 05:43:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:54,462 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-17 05:43:54,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-17 05:43:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 05:43:54,462 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:54,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 05:43:54,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-17 05:43:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:54,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-17 05:43:54,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:43:54,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971701601] [2023-02-17 05:43:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:54,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:54,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:43:54,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:43:54,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 05:43:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:54,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 05:43:54,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:43:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:54,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:43:54,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:43:54,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971701601] [2023-02-17 05:43:54,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971701601] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:43:54,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:43:54,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 05:43:54,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957507684] [2023-02-17 05:43:54,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:43:54,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 05:43:54,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:43:54,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 05:43:54,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 05:43:54,728 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:54,737 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-17 05:43:54,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 05:43:54,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 05:43:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:54,738 INFO L225 Difference]: With dead ends: 16 [2023-02-17 05:43:54,738 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 05:43:54,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 05:43:54,739 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:43:54,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:43:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 05:43:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-17 05:43:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 05:43:54,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-17 05:43:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:54,742 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 05:43:54,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 05:43:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 05:43:54,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:54,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:43:54,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 05:43:54,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:54,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:54,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-17 05:43:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:43:54,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201564747] [2023-02-17 05:43:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:43:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:43:54,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:43:54,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 05:43:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:43:55,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 05:43:55,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:43:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:55,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:43:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:55,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:43:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201564747] [2023-02-17 05:43:55,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201564747] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:43:55,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:43:55,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-17 05:43:55,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484159058] [2023-02-17 05:43:55,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:43:55,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 05:43:55,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:43:55,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 05:43:55,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-17 05:43:55,035 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:55,058 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-17 05:43:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 05:43:55,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 05:43:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:55,073 INFO L225 Difference]: With dead ends: 23 [2023-02-17 05:43:55,073 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 05:43:55,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-17 05:43:55,074 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:43:55,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:43:55,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 05:43:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 05:43:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 05:43:55,078 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-17 05:43:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:55,079 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 05:43:55,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 05:43:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 05:43:55,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:55,079 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 05:43:55,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-17 05:43:55,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:55,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-17 05:43:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:43:55,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79067770] [2023-02-17 05:43:55,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:43:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:43:55,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:43:55,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-17 05:43:55,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:43:55,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:43:55,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 05:43:55,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:43:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:55,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:43:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:55,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:43:55,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79067770] [2023-02-17 05:43:55,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79067770] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:43:55,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:43:55,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-17 05:43:55,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143801260] [2023-02-17 05:43:55,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:43:55,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 05:43:55,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:43:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 05:43:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-17 05:43:55,439 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:43:55,525 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-02-17 05:43:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 05:43:55,525 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-17 05:43:55,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:43:55,526 INFO L225 Difference]: With dead ends: 35 [2023-02-17 05:43:55,526 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 05:43:55,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-02-17 05:43:55,531 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:43:55,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 82 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:43:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 05:43:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-17 05:43:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-17 05:43:55,537 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2023-02-17 05:43:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:43:55,537 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-17 05:43:55,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:43:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-17 05:43:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:43:55,538 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:43:55,538 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 05:43:55,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-17 05:43:55,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:55,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:43:55,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:43:55,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-17 05:43:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:43:55,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208347522] [2023-02-17 05:43:55,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:43:55,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:43:55,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:43:55,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:43:55,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-17 05:43:55,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 05:43:55,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:43:55,797 WARN L261 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 05:43:55,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:43:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:56,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:43:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:43:58,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:43:58,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208347522] [2023-02-17 05:43:58,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208347522] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:43:58,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:43:58,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-02-17 05:43:58,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695310150] [2023-02-17 05:43:58,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:43:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-17 05:43:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:43:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-17 05:43:58,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2023-02-17 05:43:58,901 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:44:03,954 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2023-02-17 05:44:03,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-17 05:44:03,956 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:44:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:44:03,964 INFO L225 Difference]: With dead ends: 162 [2023-02-17 05:44:03,964 INFO L226 Difference]: Without dead ends: 156 [2023-02-17 05:44:03,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2530, Invalid=9026, Unknown=0, NotChecked=0, Total=11556 [2023-02-17 05:44:03,980 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 167 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:44:03,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 70 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-17 05:44:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-17 05:44:04,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2023-02-17 05:44:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 94 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-02-17 05:44:04,033 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 30 [2023-02-17 05:44:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:44:04,033 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-02-17 05:44:04,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-02-17 05:44:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:44:04,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:44:04,050 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:44:04,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-17 05:44:04,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:04,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:44:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:44:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1777786732, now seen corresponding path program 1 times [2023-02-17 05:44:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:44:04,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609506880] [2023-02-17 05:44:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:44:04,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:44:04,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:44:04,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-17 05:44:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:44:04,278 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 05:44:04,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:44:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:04,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:44:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:06,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:44:06,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609506880] [2023-02-17 05:44:06,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609506880] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:44:06,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:44:06,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 05:44:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812403321] [2023-02-17 05:44:06,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:44:06,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 05:44:06,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:44:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 05:44:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 05:44:06,885 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:44:22,507 INFO L93 Difference]: Finished difference Result 419 states and 575 transitions. [2023-02-17 05:44:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-02-17 05:44:22,508 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:44:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:44:22,509 INFO L225 Difference]: With dead ends: 419 [2023-02-17 05:44:22,509 INFO L226 Difference]: Without dead ends: 365 [2023-02-17 05:44:22,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12574 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=5964, Invalid=33042, Unknown=0, NotChecked=0, Total=39006 [2023-02-17 05:44:22,516 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 320 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:44:22,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 118 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-17 05:44:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-02-17 05:44:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 201. [2023-02-17 05:44:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.375) internal successors, (275), 200 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2023-02-17 05:44:22,563 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 30 [2023-02-17 05:44:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:44:22,563 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2023-02-17 05:44:22,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2023-02-17 05:44:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:44:22,565 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:44:22,565 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:44:22,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-17 05:44:22,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:22,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:44:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:44:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1894380496, now seen corresponding path program 2 times [2023-02-17 05:44:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:44:22,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088597077] [2023-02-17 05:44:22,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:44:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:44:22,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:44:22,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-17 05:44:22,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:44:22,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:44:22,803 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 05:44:22,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:44:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:23,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:44:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:25,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:44:25,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088597077] [2023-02-17 05:44:25,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088597077] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:44:25,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:44:25,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 05:44:25,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137680304] [2023-02-17 05:44:25,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:44:25,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 05:44:25,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:44:25,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 05:44:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 05:44:25,480 INFO L87 Difference]: Start difference. First operand 201 states and 275 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:44:40,571 INFO L93 Difference]: Finished difference Result 393 states and 512 transitions. [2023-02-17 05:44:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-17 05:44:40,571 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:44:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:44:40,572 INFO L225 Difference]: With dead ends: 393 [2023-02-17 05:44:40,572 INFO L226 Difference]: Without dead ends: 336 [2023-02-17 05:44:40,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12753 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=5431, Invalid=32789, Unknown=0, NotChecked=0, Total=38220 [2023-02-17 05:44:40,583 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 210 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:44:40,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 121 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-17 05:44:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-02-17 05:44:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 222. [2023-02-17 05:44:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.3619909502262444) internal successors, (301), 221 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2023-02-17 05:44:40,639 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 30 [2023-02-17 05:44:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:44:40,640 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2023-02-17 05:44:40,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2023-02-17 05:44:40,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:44:40,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:44:40,642 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:44:40,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-02-17 05:44:40,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:40,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:44:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:44:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1978693868, now seen corresponding path program 3 times [2023-02-17 05:44:40,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:44:40,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910968371] [2023-02-17 05:44:40,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:44:40,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:40,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:44:40,854 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:44:40,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-17 05:44:40,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 05:44:40,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:44:40,890 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 05:44:40,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:44:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:41,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:44:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:44,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:44:44,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910968371] [2023-02-17 05:44:44,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910968371] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:44:44,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:44:44,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 05:44:44,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588484456] [2023-02-17 05:44:44,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:44:44,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 05:44:44,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:44:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 05:44:44,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 05:44:44,385 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:44:57,106 INFO L93 Difference]: Finished difference Result 592 states and 762 transitions. [2023-02-17 05:44:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-17 05:44:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:44:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:44:57,113 INFO L225 Difference]: With dead ends: 592 [2023-02-17 05:44:57,113 INFO L226 Difference]: Without dead ends: 584 [2023-02-17 05:44:57,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5569 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=3261, Invalid=15371, Unknown=0, NotChecked=0, Total=18632 [2023-02-17 05:44:57,115 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 226 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:44:57,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 111 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-17 05:44:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-02-17 05:44:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 343. [2023-02-17 05:44:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3421052631578947) internal successors, (459), 342 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2023-02-17 05:44:57,219 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 30 [2023-02-17 05:44:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:44:57,219 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2023-02-17 05:44:57,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:44:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2023-02-17 05:44:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:44:57,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:44:57,220 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 05:44:57,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-17 05:44:57,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:57,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:44:57,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:44:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2035952170, now seen corresponding path program 4 times [2023-02-17 05:44:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:44:57,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678058229] [2023-02-17 05:44:57,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 05:44:57,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:44:57,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:44:57,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:44:57,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-17 05:44:57,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 05:44:57,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:44:57,456 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 05:44:57,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:44:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:57,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:44:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:44:59,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:44:59,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678058229] [2023-02-17 05:44:59,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678058229] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:44:59,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:44:59,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 05:44:59,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121131876] [2023-02-17 05:44:59,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:44:59,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 05:44:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:44:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 05:44:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 05:44:59,746 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:45:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:45:19,075 INFO L93 Difference]: Finished difference Result 681 states and 899 transitions. [2023-02-17 05:45:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-02-17 05:45:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:45:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:45:19,079 INFO L225 Difference]: With dead ends: 681 [2023-02-17 05:45:19,079 INFO L226 Difference]: Without dead ends: 637 [2023-02-17 05:45:19,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15488 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=6319, Invalid=40121, Unknown=0, NotChecked=0, Total=46440 [2023-02-17 05:45:19,081 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-17 05:45:19,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 170 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-17 05:45:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-02-17 05:45:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 454. [2023-02-17 05:45:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.3642384105960266) internal successors, (618), 453 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:45:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 618 transitions. [2023-02-17 05:45:19,188 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 618 transitions. Word has length 30 [2023-02-17 05:45:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:45:19,188 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 618 transitions. [2023-02-17 05:45:19,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:45:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 618 transitions. [2023-02-17 05:45:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:45:19,189 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:45:19,189 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 05:45:19,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-17 05:45:19,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:45:19,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:45:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:45:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1636215058, now seen corresponding path program 5 times [2023-02-17 05:45:19,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:45:19,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955499468] [2023-02-17 05:45:19,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 05:45:19,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:45:19,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:45:19,398 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:45:19,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-17 05:45:19,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-17 05:45:19,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:45:19,424 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 05:45:19,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:45:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:45:19,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:45:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:45:22,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:45:22,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955499468] [2023-02-17 05:45:22,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955499468] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:45:22,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:45:22,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 05:45:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207534888] [2023-02-17 05:45:22,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:45:22,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 05:45:22,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:45:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 05:45:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 05:45:22,276 INFO L87 Difference]: Start difference. First operand 454 states and 618 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:45:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:45:35,316 INFO L93 Difference]: Finished difference Result 645 states and 869 transitions. [2023-02-17 05:45:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-02-17 05:45:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:45:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:45:35,319 INFO L225 Difference]: With dead ends: 645 [2023-02-17 05:45:35,319 INFO L226 Difference]: Without dead ends: 596 [2023-02-17 05:45:35,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=3942, Invalid=22790, Unknown=0, NotChecked=0, Total=26732 [2023-02-17 05:45:35,321 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 157 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-17 05:45:35,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 65 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-17 05:45:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-02-17 05:45:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 480. [2023-02-17 05:45:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 479 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:45:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 651 transitions. [2023-02-17 05:45:35,488 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 651 transitions. Word has length 30 [2023-02-17 05:45:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:45:35,490 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 651 transitions. [2023-02-17 05:45:35,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:45:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 651 transitions. [2023-02-17 05:45:35,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:45:35,492 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:45:35,493 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 05:45:35,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-17 05:45:35,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:45:35,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:45:35,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:45:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1578956756, now seen corresponding path program 6 times [2023-02-17 05:45:35,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:45:35,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837165981] [2023-02-17 05:45:35,700 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 05:45:35,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:45:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:45:35,702 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:45:35,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-17 05:45:35,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-17 05:45:35,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:45:35,730 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 05:45:35,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:45:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:45:36,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:45:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:45:39,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:45:39,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837165981] [2023-02-17 05:45:39,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837165981] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:45:39,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:45:39,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 05:45:39,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785596312] [2023-02-17 05:45:39,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:45:39,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 05:45:39,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:45:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 05:45:39,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2449, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 05:45:39,104 INFO L87 Difference]: Start difference. First operand 480 states and 651 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:46:26,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 05:46:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:46:36,956 INFO L93 Difference]: Finished difference Result 1004 states and 1335 transitions. [2023-02-17 05:46:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-17 05:46:36,957 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:46:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:46:36,959 INFO L225 Difference]: With dead ends: 1004 [2023-02-17 05:46:36,959 INFO L226 Difference]: Without dead ends: 990 [2023-02-17 05:46:36,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17936 ImplicationChecksByTransitivity, 49.8s TimeCoverageRelationStatistics Valid=7493, Invalid=46563, Unknown=0, NotChecked=0, Total=54056 [2023-02-17 05:46:36,964 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 328 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-02-17 05:46:36,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 315 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2041 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2023-02-17 05:46:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-02-17 05:46:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 802. [2023-02-17 05:46:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.373283395755306) internal successors, (1100), 801 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:46:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1100 transitions. [2023-02-17 05:46:37,225 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1100 transitions. Word has length 30 [2023-02-17 05:46:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:46:37,225 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1100 transitions. [2023-02-17 05:46:37,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:46:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1100 transitions. [2023-02-17 05:46:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:46:37,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:46:37,227 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 05:46:37,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-02-17 05:46:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:46:37,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:46:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:46:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -497923054, now seen corresponding path program 7 times [2023-02-17 05:46:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:46:37,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111243379] [2023-02-17 05:46:37,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 05:46:37,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:46:37,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:46:37,436 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:46:37,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-17 05:46:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:46:37,461 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 05:46:37,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:46:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:46:37,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:46:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:46:39,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:46:39,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111243379] [2023-02-17 05:46:39,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111243379] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:46:39,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:46:39,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 05:46:39,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767970212] [2023-02-17 05:46:39,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:46:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 05:46:39,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:46:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 05:46:39,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2257, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 05:46:39,866 INFO L87 Difference]: Start difference. First operand 802 states and 1100 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:00,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:00,565 INFO L93 Difference]: Finished difference Result 1186 states and 1602 transitions. [2023-02-17 05:47:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2023-02-17 05:47:00,566 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:47:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:00,570 INFO L225 Difference]: With dead ends: 1186 [2023-02-17 05:47:00,570 INFO L226 Difference]: Without dead ends: 1138 [2023-02-17 05:47:00,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15913 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=6191, Invalid=41551, Unknown=0, NotChecked=0, Total=47742 [2023-02-17 05:47:00,573 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 214 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:00,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 145 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-17 05:47:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-02-17 05:47:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 930. [2023-02-17 05:47:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.3702906350914963) internal successors, (1273), 929 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1273 transitions. [2023-02-17 05:47:00,895 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1273 transitions. Word has length 30 [2023-02-17 05:47:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:00,896 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1273 transitions. [2023-02-17 05:47:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1273 transitions. [2023-02-17 05:47:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:47:00,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:00,897 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:00,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:01,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:01,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1120723122, now seen corresponding path program 8 times [2023-02-17 05:47:01,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:01,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283641829] [2023-02-17 05:47:01,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:47:01,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:01,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:01,106 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:01,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-17 05:47:01,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:47:01,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:01,172 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 05:47:01,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:47:01,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:47:03,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:03,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283641829] [2023-02-17 05:47:03,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283641829] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:03,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:03,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 05:47:03,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631906450] [2023-02-17 05:47:03,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:03,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 05:47:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 05:47:03,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2285, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 05:47:03,595 INFO L87 Difference]: Start difference. First operand 930 states and 1273 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:18,151 INFO L93 Difference]: Finished difference Result 1195 states and 1622 transitions. [2023-02-17 05:47:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-17 05:47:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:47:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:18,154 INFO L225 Difference]: With dead ends: 1195 [2023-02-17 05:47:18,154 INFO L226 Difference]: Without dead ends: 1131 [2023-02-17 05:47:18,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9482 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=4178, Invalid=26622, Unknown=0, NotChecked=0, Total=30800 [2023-02-17 05:47:18,155 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 185 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:18,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 151 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-17 05:47:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2023-02-17 05:47:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 978. [2023-02-17 05:47:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3674513817809621) internal successors, (1336), 977 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1336 transitions. [2023-02-17 05:47:18,484 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1336 transitions. Word has length 30 [2023-02-17 05:47:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:18,485 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1336 transitions. [2023-02-17 05:47:18,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1336 transitions. [2023-02-17 05:47:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:47:18,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:18,486 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:18,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:18,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:18,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:18,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1378888560, now seen corresponding path program 9 times [2023-02-17 05:47:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:18,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461339253] [2023-02-17 05:47:18,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:47:18,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:18,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:18,696 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:18,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-17 05:47:18,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 05:47:18,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:18,728 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-17 05:47:18,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:47:19,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:47:22,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:22,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461339253] [2023-02-17 05:47:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461339253] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:22,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:22,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 05:47:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817429022] [2023-02-17 05:47:22,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:22,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 05:47:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 05:47:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 05:47:22,987 INFO L87 Difference]: Start difference. First operand 978 states and 1336 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:51,555 INFO L93 Difference]: Finished difference Result 1617 states and 2170 transitions. [2023-02-17 05:47:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-17 05:47:51,556 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 05:47:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:51,561 INFO L225 Difference]: With dead ends: 1617 [2023-02-17 05:47:51,561 INFO L226 Difference]: Without dead ends: 1609 [2023-02-17 05:47:51,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10785 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=5368, Invalid=27574, Unknown=0, NotChecked=0, Total=32942 [2023-02-17 05:47:51,564 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 323 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:51,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 149 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-02-17 05:47:51,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-02-17 05:47:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1317. [2023-02-17 05:47:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.3761398176291793) internal successors, (1811), 1316 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1811 transitions. [2023-02-17 05:47:52,060 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1811 transitions. Word has length 30 [2023-02-17 05:47:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:52,060 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1811 transitions. [2023-02-17 05:47:52,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:47:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1811 transitions. [2023-02-17 05:47:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:47:52,061 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:52,062 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:52,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:52,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:52,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:52,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1436146862, now seen corresponding path program 10 times [2023-02-17 05:47:52,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:52,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523784979] [2023-02-17 05:47:52,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 05:47:52,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:52,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:52,271 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:52,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-17 05:47:52,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 05:47:52,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:52,298 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-17 05:47:52,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:47:52,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:47:56,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:56,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523784979] [2023-02-17 05:47:56,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523784979] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:56,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:56,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 05:47:56,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270563358] [2023-02-17 05:47:56,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:56,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 05:47:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 05:47:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2263, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 05:47:56,166 INFO L87 Difference]: Start difference. First operand 1317 states and 1811 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)