./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 [2023-02-18 13:19:36,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 13:19:36,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 13:19:36,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 13:19:36,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 13:19:36,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 13:19:36,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 13:19:36,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 13:19:36,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 13:19:36,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 13:19:36,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 13:19:36,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 13:19:36,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 13:19:36,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 13:19:36,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 13:19:36,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 13:19:36,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 13:19:36,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 13:19:36,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 13:19:36,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 13:19:36,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 13:19:36,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 13:19:36,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 13:19:36,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 13:19:36,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 13:19:36,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 13:19:36,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 13:19:36,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 13:19:36,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 13:19:36,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 13:19:36,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 13:19:36,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 13:19:36,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 13:19:36,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 13:19:36,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 13:19:36,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 13:19:36,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 13:19:36,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 13:19:36,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 13:19:36,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 13:19:36,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 13:19:36,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 13:19:36,222 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 13:19:36,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 13:19:36,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 13:19:36,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 13:19:36,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 13:19:36,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 13:19:36,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 13:19:36,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 13:19:36,225 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 13:19:36,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 13:19:36,226 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 13:19:36,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 13:19:36,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 13:19:36,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 13:19:36,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 13:19:36,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 13:19:36,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 13:19:36,227 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 13:19:36,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 13:19:36,227 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 13:19:36,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 13:19:36,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 13:19:36,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 13:19:36,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 13:19:36,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:19:36,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 13:19:36,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 13:19:36,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 13:19:36,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 13:19:36,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 13:19:36,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 13:19:36,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 13:19:36,230 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 13:19:36,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 13:19:36,230 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 13:19:36,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-18 13:19:36,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 13:19:36,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 13:19:36,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 13:19:36,491 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 13:19:36,491 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 13:19:36,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-18 13:19:37,593 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 13:19:37,814 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 13:19:37,815 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-18 13:19:37,821 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e23d1040/8fdc2694062e4a8b98bb95a299fac972/FLAGf648a9ba8 [2023-02-18 13:19:37,836 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e23d1040/8fdc2694062e4a8b98bb95a299fac972 [2023-02-18 13:19:37,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 13:19:37,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 13:19:37,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 13:19:37,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 13:19:37,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 13:19:37,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:19:37" (1/1) ... [2023-02-18 13:19:37,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d01ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:37, skipping insertion in model container [2023-02-18 13:19:37,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:19:37" (1/1) ... [2023-02-18 13:19:37,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 13:19:37,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 13:19:37,960 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] [2023-02-18 13:19:37,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:19:37,982 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 13:19:37,989 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] [2023-02-18 13:19:37,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:19:38,001 INFO L208 MainTranslator]: Completed translation [2023-02-18 13:19:38,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38 WrapperNode [2023-02-18 13:19:38,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 13:19:38,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 13:19:38,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 13:19:38,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 13:19:38,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,028 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-18 13:19:38,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 13:19:38,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 13:19:38,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 13:19:38,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 13:19:38,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 13:19:38,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 13:19:38,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 13:19:38,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 13:19:38,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (1/1) ... [2023-02-18 13:19:38,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:19:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:19:38,102 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) [2023-02-18 13:19:38,133 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 [2023-02-18 13:19:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 13:19:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 13:19:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 13:19:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 13:19:38,189 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 13:19:38,191 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 13:19:38,278 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 13:19:38,283 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 13:19:38,283 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 13:19:38,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:19:38 BoogieIcfgContainer [2023-02-18 13:19:38,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 13:19:38,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 13:19:38,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 13:19:38,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 13:19:38,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:19:37" (1/3) ... [2023-02-18 13:19:38,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da6efdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:19:38, skipping insertion in model container [2023-02-18 13:19:38,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:38" (2/3) ... [2023-02-18 13:19:38,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da6efdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:19:38, skipping insertion in model container [2023-02-18 13:19:38,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:19:38" (3/3) ... [2023-02-18 13:19:38,293 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-18 13:19:38,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 13:19:38,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 13:19:38,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 13:19:38,352 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;@19277b31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 13:19:38,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 13:19:38,356 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) [2023-02-18 13:19:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 13:19:38,361 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:38,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 13:19:38,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-18 13:19:38,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:19:38,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584366541] [2023-02-18 13:19:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:19:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:19:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584366541] [2023-02-18 13:19:38,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584366541] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:19:38,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:19:38,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 13:19:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145344957] [2023-02-18 13:19:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:19:38,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 13:19:38,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:19:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 13:19:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 13:19:38,536 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) [2023-02-18 13:19:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:38,549 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-18 13:19:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 13:19:38,550 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 [2023-02-18 13:19:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:38,555 INFO L225 Difference]: With dead ends: 21 [2023-02-18 13:19:38,555 INFO L226 Difference]: Without dead ends: 9 [2023-02-18 13:19:38,557 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 [2023-02-18 13:19:38,560 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 [2023-02-18 13:19:38,561 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] [2023-02-18 13:19:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-18 13:19:38,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-18 13:19:38,579 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) [2023-02-18 13:19:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-18 13:19:38,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-18 13:19:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:38,580 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-18 13:19:38,581 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) [2023-02-18 13:19:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-18 13:19:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 13:19:38,581 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:38,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 13:19:38,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 13:19:38,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-18 13:19:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:19:38,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773927193] [2023-02-18 13:19:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:19:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:19:38,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773927193] [2023-02-18 13:19:38,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773927193] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:19:38,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:19:38,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:19:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954345621] [2023-02-18 13:19:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:19:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:19:38,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:19:38,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:19:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:19:38,660 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) [2023-02-18 13:19:38,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:38,671 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-18 13:19:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:19:38,672 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 [2023-02-18 13:19:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:38,672 INFO L225 Difference]: With dead ends: 16 [2023-02-18 13:19:38,672 INFO L226 Difference]: Without dead ends: 12 [2023-02-18 13:19:38,673 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 [2023-02-18 13:19:38,674 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 [2023-02-18 13:19:38,674 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] [2023-02-18 13:19:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-18 13:19:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-18 13:19:38,677 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) [2023-02-18 13:19:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-18 13:19:38,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-18 13:19:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:38,678 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-18 13:19:38,678 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) [2023-02-18 13:19:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-18 13:19:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 13:19:38,679 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:38,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:19:38,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 13:19:38,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-18 13:19:38,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:19:38,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169645911] [2023-02-18 13:19:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:38,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:19:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:38,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:19:38,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169645911] [2023-02-18 13:19:38,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169645911] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 13:19:38,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810463700] [2023-02-18 13:19:38,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:38,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:19:38,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:19:38,830 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) [2023-02-18 13:19:38,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 13:19:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:38,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 13:19:38,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:38,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:19:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:39,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810463700] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:19:39,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 13:19:39,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2023-02-18 13:19:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165520829] [2023-02-18 13:19:39,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 13:19:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 13:19:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:19:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 13:19:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-18 13:19:39,021 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) [2023-02-18 13:19:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:39,059 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-18 13:19:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 13:19:39,059 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 [2023-02-18 13:19:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:39,060 INFO L225 Difference]: With dead ends: 23 [2023-02-18 13:19:39,060 INFO L226 Difference]: Without dead ends: 19 [2023-02-18 13:19:39,061 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 [2023-02-18 13:19:39,062 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 [2023-02-18 13:19:39,062 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] [2023-02-18 13:19:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-18 13:19:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-18 13:19:39,066 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) [2023-02-18 13:19:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-18 13:19:39,067 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-18 13:19:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:39,067 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-18 13:19:39,067 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) [2023-02-18 13:19:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-18 13:19:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 13:19:39,068 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:39,068 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 13:19:39,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 13:19:39,277 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 [2023-02-18 13:19:39,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-18 13:19:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:19:39,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705148663] [2023-02-18 13:19:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:39,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:19:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:39,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:19:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705148663] [2023-02-18 13:19:39,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705148663] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 13:19:39,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241524947] [2023-02-18 13:19:39,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:19:39,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:19:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:19:39,481 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) [2023-02-18 13:19:39,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 13:19:39,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:19:39,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:19:39,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 13:19:39,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:39,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:19:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:39,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241524947] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:19:39,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 13:19:39,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-02-18 13:19:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013642412] [2023-02-18 13:19:39,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 13:19:39,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 13:19:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:19:39,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 13:19:39,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-02-18 13:19:39,700 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) [2023-02-18 13:19:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:39,838 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-02-18 13:19:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 13:19:39,838 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 [2023-02-18 13:19:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:39,839 INFO L225 Difference]: With dead ends: 35 [2023-02-18 13:19:39,839 INFO L226 Difference]: Without dead ends: 31 [2023-02-18 13:19:39,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2023-02-18 13:19:39,841 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-18 13:19:39,841 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] [2023-02-18 13:19:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-18 13:19:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-18 13:19:39,846 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) [2023-02-18 13:19:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-18 13:19:39,847 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2023-02-18 13:19:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:39,847 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-18 13:19:39,848 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) [2023-02-18 13:19:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-18 13:19:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:19:39,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:39,849 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-18 13:19:39,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 13:19:40,055 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 [2023-02-18 13:19:40,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:40,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-18 13:19:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:19:40,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070493547] [2023-02-18 13:19:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:40,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:19:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 13:19:40,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 13:19:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 13:19:40,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 13:19:40,213 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 13:19:40,216 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 13:19:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 13:19:40,222 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-02-18 13:19:40,225 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 13:19:40,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:19:40 BoogieIcfgContainer [2023-02-18 13:19:40,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 13:19:40,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 13:19:40,255 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 13:19:40,255 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 13:19:40,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:19:38" (3/4) ... [2023-02-18 13:19:40,258 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-18 13:19:40,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 13:19:40,258 INFO L158 Benchmark]: Toolchain (without parser) took 2419.19ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 110.8MB in the beginning and 139.3MB in the end (delta: -28.6MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2023-02-18 13:19:40,259 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory was 66.8MB in the beginning and 66.6MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:19:40,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.34ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 100.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 13:19:40,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.01ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 99.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 13:19:40,260 INFO L158 Benchmark]: Boogie Preprocessor took 33.00ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 98.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:19:40,260 INFO L158 Benchmark]: RCFGBuilder took 221.52ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 88.9MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 13:19:40,260 INFO L158 Benchmark]: TraceAbstraction took 1967.10ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 88.2MB in the beginning and 139.3MB in the end (delta: -51.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:19:40,261 INFO L158 Benchmark]: Witness Printer took 3.44ms. Allocated memory is still 176.2MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:19:40,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory was 66.8MB in the beginning and 66.6MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.34ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 100.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.01ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 99.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.00ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 98.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 221.52ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 88.9MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1967.10ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 88.2MB in the beginning and 139.3MB in the end (delta: -51.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.44ms. Allocated memory is still 176.2MB. Free memory is still 139.3MB. 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: 1.9s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, 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, 0.3s 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, 0.2s 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 [2023-02-18 13:19:40,277 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 [2023-02-18 13:19:42,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 13:19:42,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 13:19:42,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 13:19:42,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 13:19:42,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 13:19:42,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 13:19:42,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 13:19:42,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 13:19:42,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 13:19:42,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 13:19:42,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 13:19:42,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 13:19:42,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 13:19:42,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 13:19:42,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 13:19:42,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 13:19:42,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 13:19:42,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 13:19:42,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 13:19:42,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 13:19:42,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 13:19:42,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 13:19:42,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 13:19:42,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 13:19:42,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 13:19:42,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 13:19:42,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 13:19:42,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 13:19:42,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 13:19:42,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 13:19:42,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 13:19:42,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 13:19:42,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 13:19:42,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 13:19:42,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 13:19:42,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 13:19:42,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 13:19:42,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 13:19:42,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 13:19:42,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 13:19:42,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-18 13:19:42,454 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 13:19:42,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 13:19:42,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 13:19:42,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 13:19:42,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 13:19:42,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 13:19:42,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 13:19:42,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 13:19:42,459 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 13:19:42,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 13:19:42,460 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 13:19:42,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 13:19:42,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 13:19:42,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 13:19:42,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 13:19:42,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 13:19:42,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 13:19:42,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 13:19:42,461 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 13:19:42,462 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 13:19:42,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 13:19:42,462 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 13:19:42,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 13:19:42,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 13:19:42,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 13:19:42,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 13:19:42,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:19:42,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 13:19:42,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 13:19:42,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 13:19:42,464 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 13:19:42,464 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 13:19:42,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 13:19:42,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 13:19:42,465 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 13:19:42,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 13:19:42,465 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 13:19:42,465 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 13:19:42,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-18 13:19:42,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 13:19:42,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 13:19:42,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 13:19:42,813 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 13:19:42,814 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 13:19:42,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-18 13:19:44,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 13:19:44,286 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 13:19:44,287 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-18 13:19:44,302 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fc6d5e1/13d11943dd1549f4a0864417f27e3938/FLAG66a3eb87d [2023-02-18 13:19:44,315 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fc6d5e1/13d11943dd1549f4a0864417f27e3938 [2023-02-18 13:19:44,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 13:19:44,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 13:19:44,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 13:19:44,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 13:19:44,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 13:19:44,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0640fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44, skipping insertion in model container [2023-02-18 13:19:44,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 13:19:44,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 13:19:44,452 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] [2023-02-18 13:19:44,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:19:44,475 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 13:19:44,485 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] [2023-02-18 13:19:44,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:19:44,500 INFO L208 MainTranslator]: Completed translation [2023-02-18 13:19:44,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44 WrapperNode [2023-02-18 13:19:44,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 13:19:44,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 13:19:44,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 13:19:44,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 13:19:44,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,532 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-18 13:19:44,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 13:19:44,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 13:19:44,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 13:19:44,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 13:19:44,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 13:19:44,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 13:19:44,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 13:19:44,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 13:19:44,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (1/1) ... [2023-02-18 13:19:44,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:19:44,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:19:44,610 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) [2023-02-18 13:19:44,642 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 [2023-02-18 13:19:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 13:19:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 13:19:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 13:19:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 13:19:44,721 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 13:19:44,724 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 13:19:44,862 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 13:19:44,867 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 13:19:44,867 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 13:19:44,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:19:44 BoogieIcfgContainer [2023-02-18 13:19:44,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 13:19:44,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 13:19:44,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 13:19:44,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 13:19:44,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:19:44" (1/3) ... [2023-02-18 13:19:44,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b21c22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:19:44, skipping insertion in model container [2023-02-18 13:19:44,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:19:44" (2/3) ... [2023-02-18 13:19:44,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b21c22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:19:44, skipping insertion in model container [2023-02-18 13:19:44,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:19:44" (3/3) ... [2023-02-18 13:19:44,875 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-18 13:19:44,899 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 13:19:44,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 13:19:44,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 13:19:44,951 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;@53c92d77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 13:19:44,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 13:19:44,954 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) [2023-02-18 13:19:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 13:19:44,958 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:44,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 13:19:44,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-18 13:19:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:19:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202618022] [2023-02-18 13:19:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:44,975 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 [2023-02-18 13:19:44,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:19:44,978 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) [2023-02-18 13:19:44,979 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 [2023-02-18 13:19:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:45,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 13:19:45,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:45,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 13:19:45,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:19:45,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202618022] [2023-02-18 13:19:45,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202618022] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:19:45,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:19:45,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 13:19:45,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286477914] [2023-02-18 13:19:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:19:45,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 13:19:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:19:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 13:19:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 13:19:45,109 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) [2023-02-18 13:19:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:45,120 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-18 13:19:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 13:19:45,131 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 [2023-02-18 13:19:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:45,147 INFO L225 Difference]: With dead ends: 21 [2023-02-18 13:19:45,147 INFO L226 Difference]: Without dead ends: 9 [2023-02-18 13:19:45,150 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 [2023-02-18 13:19:45,153 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 [2023-02-18 13:19:45,153 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] [2023-02-18 13:19:45,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-18 13:19:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-18 13:19:45,180 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) [2023-02-18 13:19:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-18 13:19:45,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-18 13:19:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:45,182 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-18 13:19:45,182 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) [2023-02-18 13:19:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-18 13:19:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 13:19:45,182 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:45,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 13:19:45,190 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 (2)] Ended with exit code 0 [2023-02-18 13:19:45,388 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 [2023-02-18 13:19:45,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-18 13:19:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:19:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974474953] [2023-02-18 13:19:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:45,390 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 [2023-02-18 13:19:45,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:19:45,394 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) [2023-02-18 13:19:45,395 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 [2023-02-18 13:19:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:45,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 13:19:45,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:45,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 13:19:45,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:19:45,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974474953] [2023-02-18 13:19:45,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974474953] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:19:45,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:19:45,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 13:19:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947322640] [2023-02-18 13:19:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:19:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 13:19:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:19:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 13:19:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 13:19:45,440 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) [2023-02-18 13:19:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:45,451 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-18 13:19:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 13:19:45,451 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 [2023-02-18 13:19:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:45,452 INFO L225 Difference]: With dead ends: 16 [2023-02-18 13:19:45,452 INFO L226 Difference]: Without dead ends: 12 [2023-02-18 13:19:45,452 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 [2023-02-18 13:19:45,454 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 [2023-02-18 13:19:45,455 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] [2023-02-18 13:19:45,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-18 13:19:45,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-18 13:19:45,457 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) [2023-02-18 13:19:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-18 13:19:45,458 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-18 13:19:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:45,458 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-18 13:19:45,459 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) [2023-02-18 13:19:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-18 13:19:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 13:19:45,459 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:45,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:19:45,473 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 [2023-02-18 13:19:45,667 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 [2023-02-18 13:19:45,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:45,669 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-18 13:19:45,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:19:45,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683817635] [2023-02-18 13:19:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:45,670 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 [2023-02-18 13:19:45,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:19:45,671 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) [2023-02-18 13:19:45,674 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 [2023-02-18 13:19:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:45,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 13:19:45,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:45,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:19:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:45,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:19:45,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683817635] [2023-02-18 13:19:45,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683817635] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:19:45,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:19:45,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-18 13:19:45,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645139929] [2023-02-18 13:19:45,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:19:45,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 13:19:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:19:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 13:19:45,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-18 13:19:45,778 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) [2023-02-18 13:19:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:45,810 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-18 13:19:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 13:19:45,811 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 [2023-02-18 13:19:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:45,812 INFO L225 Difference]: With dead ends: 23 [2023-02-18 13:19:45,812 INFO L226 Difference]: Without dead ends: 19 [2023-02-18 13:19:45,812 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 [2023-02-18 13:19:45,813 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 [2023-02-18 13:19:45,814 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] [2023-02-18 13:19:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-18 13:19:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-18 13:19:45,818 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) [2023-02-18 13:19:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-18 13:19:45,819 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-18 13:19:45,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:45,819 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-18 13:19:45,819 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) [2023-02-18 13:19:45,820 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-18 13:19:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 13:19:45,820 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:45,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 13:19:45,832 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 [2023-02-18 13:19:46,029 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 [2023-02-18 13:19:46,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-18 13:19:46,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:19:46,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597980079] [2023-02-18 13:19:46,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:19:46,032 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 [2023-02-18 13:19:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:19:46,033 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) [2023-02-18 13:19:46,036 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 [2023-02-18 13:19:46,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:19:46,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:19:46,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 13:19:46,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:46,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:19:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:46,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:19:46,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597980079] [2023-02-18 13:19:46,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597980079] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:19:46,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:19:46,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-18 13:19:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458257680] [2023-02-18 13:19:46,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:19:46,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 13:19:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:19:46,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 13:19:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-18 13:19:46,246 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) [2023-02-18 13:19:46,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:46,371 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-02-18 13:19:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 13:19:46,372 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 [2023-02-18 13:19:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:46,372 INFO L225 Difference]: With dead ends: 35 [2023-02-18 13:19:46,373 INFO L226 Difference]: Without dead ends: 31 [2023-02-18 13:19:46,373 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 [2023-02-18 13:19:46,374 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 [2023-02-18 13:19:46,374 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] [2023-02-18 13:19:46,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-18 13:19:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-18 13:19:46,386 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) [2023-02-18 13:19:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-18 13:19:46,387 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2023-02-18 13:19:46,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-18 13:19:46,389 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) [2023-02-18 13:19:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-18 13:19:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:19:46,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:46,391 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-18 13:19:46,402 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 [2023-02-18 13:19:46,591 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 [2023-02-18 13:19:46,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-18 13:19:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:19:46,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648646972] [2023-02-18 13:19:46,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 13:19:46,593 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 [2023-02-18 13:19:46,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:19:46,595 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) [2023-02-18 13:19:46,596 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 [2023-02-18 13:19:46,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 13:19:46,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:19:46,660 WARN L261 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 13:19:46,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:48,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:19:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:50,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:19:50,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648646972] [2023-02-18 13:19:50,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648646972] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:19:50,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:19:50,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-02-18 13:19:50,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699602681] [2023-02-18 13:19:50,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:19:50,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-18 13:19:50,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:19:50,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-18 13:19:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2023-02-18 13:19:50,449 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) [2023-02-18 13:19:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:19:55,902 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2023-02-18 13:19:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-18 13:19:55,903 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 [2023-02-18 13:19:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:19:55,905 INFO L225 Difference]: With dead ends: 162 [2023-02-18 13:19:55,905 INFO L226 Difference]: Without dead ends: 156 [2023-02-18 13:19:55,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2530, Invalid=9026, Unknown=0, NotChecked=0, Total=11556 [2023-02-18 13:19:55,910 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 167 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-02-18 13:19:55,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 70 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-18 13:19:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-18 13:19:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2023-02-18 13:19:55,933 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) [2023-02-18 13:19:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-02-18 13:19:55,934 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 30 [2023-02-18 13:19:55,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:19:55,935 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-02-18 13:19:55,935 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) [2023-02-18 13:19:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-02-18 13:19:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:19:55,936 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:19:55,936 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:19:55,949 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 [2023-02-18 13:19:56,145 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 [2023-02-18 13:19:56,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:19:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:19:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1777786732, now seen corresponding path program 1 times [2023-02-18 13:19:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:19:56,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074034446] [2023-02-18 13:19:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:19:56,147 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 [2023-02-18 13:19:56,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:19:56,148 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) [2023-02-18 13:19:56,151 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 [2023-02-18 13:19:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:19:56,177 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 13:19:56,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:19:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:56,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:19:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:19:58,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:19:58,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074034446] [2023-02-18 13:19:58,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074034446] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:19:58,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:19:58,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:19:58,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63275172] [2023-02-18 13:19:58,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:19:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:19:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:19:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:19:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:19:58,649 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) [2023-02-18 13:20:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:20:14,147 INFO L93 Difference]: Finished difference Result 419 states and 575 transitions. [2023-02-18 13:20:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-02-18 13:20:14,148 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 [2023-02-18 13:20:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:20:14,150 INFO L225 Difference]: With dead ends: 419 [2023-02-18 13:20:14,150 INFO L226 Difference]: Without dead ends: 365 [2023-02-18 13:20:14,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12574 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=5964, Invalid=33042, Unknown=0, NotChecked=0, Total=39006 [2023-02-18 13:20:14,159 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 320 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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 [2023-02-18 13:20:14,160 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] [2023-02-18 13:20:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-02-18 13:20:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 201. [2023-02-18 13:20:14,224 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) [2023-02-18 13:20:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2023-02-18 13:20:14,226 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 30 [2023-02-18 13:20:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:20:14,226 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2023-02-18 13:20:14,226 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) [2023-02-18 13:20:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2023-02-18 13:20:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:20:14,228 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:20:14,228 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:20:14,235 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 [2023-02-18 13:20:14,433 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 [2023-02-18 13:20:14,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:20:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:20:14,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1894380496, now seen corresponding path program 2 times [2023-02-18 13:20:14,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:20:14,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626478068] [2023-02-18 13:20:14,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:20:14,435 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 [2023-02-18 13:20:14,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:20:14,436 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) [2023-02-18 13:20:14,438 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 (8)] Waiting until timeout for monitored process [2023-02-18 13:20:14,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:20:14,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:20:14,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 13:20:14,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:20:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:20:14,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:20:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:20:16,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:20:16,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626478068] [2023-02-18 13:20:16,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626478068] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:20:16,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:20:16,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:20:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201111260] [2023-02-18 13:20:16,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:20:16,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:20:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:20:16,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:20:16,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:20:16,857 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) [2023-02-18 13:20:31,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:20:31,766 INFO L93 Difference]: Finished difference Result 393 states and 512 transitions. [2023-02-18 13:20:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-18 13:20:31,766 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 [2023-02-18 13:20:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:20:31,768 INFO L225 Difference]: With dead ends: 393 [2023-02-18 13:20:31,770 INFO L226 Difference]: Without dead ends: 336 [2023-02-18 13:20:31,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12753 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=5431, Invalid=32789, Unknown=0, NotChecked=0, Total=38220 [2023-02-18 13:20:31,775 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, 1.9s IncrementalHoareTripleChecker+Time [2023-02-18 13:20:31,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 121 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-18 13:20:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-02-18 13:20:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 222. [2023-02-18 13:20:31,819 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) [2023-02-18 13:20:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2023-02-18 13:20:31,821 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 30 [2023-02-18 13:20:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:20:31,821 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2023-02-18 13:20:31,821 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) [2023-02-18 13:20:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2023-02-18 13:20:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:20:31,823 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:20:31,823 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:20:31,831 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 (8)] Forceful destruction successful, exit code 0 [2023-02-18 13:20:32,029 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 [2023-02-18 13:20:32,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:20:32,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:20:32,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1978693868, now seen corresponding path program 3 times [2023-02-18 13:20:32,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:20:32,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893266357] [2023-02-18 13:20:32,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 13:20:32,030 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 [2023-02-18 13:20:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:20:32,031 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) [2023-02-18 13:20:32,032 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 [2023-02-18 13:20:32,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 13:20:32,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:20:32,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-18 13:20:32,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:20:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:20:32,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:20:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:20:35,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:20:35,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893266357] [2023-02-18 13:20:35,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893266357] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:20:35,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:20:35,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:20:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207299454] [2023-02-18 13:20:35,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:20:35,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:20:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:20:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:20:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:20:35,664 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) [2023-02-18 13:20:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:20:48,337 INFO L93 Difference]: Finished difference Result 592 states and 762 transitions. [2023-02-18 13:20:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-18 13:20:48,337 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 [2023-02-18 13:20:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:20:48,339 INFO L225 Difference]: With dead ends: 592 [2023-02-18 13:20:48,340 INFO L226 Difference]: Without dead ends: 584 [2023-02-18 13:20:48,341 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 [2023-02-18 13:20:48,342 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 226 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-02-18 13:20:48,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 111 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-18 13:20:48,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-02-18 13:20:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 343. [2023-02-18 13:20:48,425 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) [2023-02-18 13:20:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2023-02-18 13:20:48,431 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 30 [2023-02-18 13:20:48,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:20:48,432 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2023-02-18 13:20:48,432 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) [2023-02-18 13:20:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2023-02-18 13:20:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:20:48,433 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:20:48,434 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 13:20:48,443 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 (9)] Forceful destruction successful, exit code 0 [2023-02-18 13:20:48,641 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 [2023-02-18 13:20:48,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:20:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:20:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2035952170, now seen corresponding path program 4 times [2023-02-18 13:20:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:20:48,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632773333] [2023-02-18 13:20:48,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 13:20:48,642 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 [2023-02-18 13:20:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:20:48,643 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) [2023-02-18 13:20:48,644 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 [2023-02-18 13:20:48,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 13:20:48,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:20:48,672 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 13:20:48,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:20:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:20:49,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:20:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:20:51,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:20:51,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632773333] [2023-02-18 13:20:51,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632773333] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:20:51,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:20:51,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:20:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527372580] [2023-02-18 13:20:51,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:20:51,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:20:51,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:20:51,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:20:51,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:20:51,075 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) [2023-02-18 13:21:09,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:21:09,696 INFO L93 Difference]: Finished difference Result 681 states and 899 transitions. [2023-02-18 13:21:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-02-18 13:21:09,697 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 [2023-02-18 13:21:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:21:09,700 INFO L225 Difference]: With dead ends: 681 [2023-02-18 13:21:09,700 INFO L226 Difference]: Without dead ends: 637 [2023-02-18 13:21:09,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15488 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=6319, Invalid=40121, Unknown=0, NotChecked=0, Total=46440 [2023-02-18 13:21:09,704 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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 [2023-02-18 13:21:09,704 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] [2023-02-18 13:21:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-02-18 13:21:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 454. [2023-02-18 13:21:09,859 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) [2023-02-18 13:21:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 618 transitions. [2023-02-18 13:21:09,861 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 618 transitions. Word has length 30 [2023-02-18 13:21:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:21:09,862 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 618 transitions. [2023-02-18 13:21:09,862 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) [2023-02-18 13:21:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 618 transitions. [2023-02-18 13:21:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:21:09,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:21:09,865 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 13:21:09,879 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 [2023-02-18 13:21:10,073 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 [2023-02-18 13:21:10,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:21:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:21:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1636215058, now seen corresponding path program 5 times [2023-02-18 13:21:10,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:21:10,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607080957] [2023-02-18 13:21:10,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 13:21:10,075 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 [2023-02-18 13:21:10,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:21:10,076 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) [2023-02-18 13:21:10,079 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 [2023-02-18 13:21:10,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-18 13:21:10,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:21:10,105 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-18 13:21:10,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:21:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:21:10,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:21:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:21:12,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:21:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607080957] [2023-02-18 13:21:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607080957] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:21:12,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:21:12,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:21:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831621934] [2023-02-18 13:21:12,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:21:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:21:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:21:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:21:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:21:12,659 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) [2023-02-18 13:21:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:21:25,548 INFO L93 Difference]: Finished difference Result 645 states and 869 transitions. [2023-02-18 13:21:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-02-18 13:21:25,550 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 [2023-02-18 13:21:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:21:25,552 INFO L225 Difference]: With dead ends: 645 [2023-02-18 13:21:25,552 INFO L226 Difference]: Without dead ends: 596 [2023-02-18 13:21:25,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=3942, Invalid=22790, Unknown=0, NotChecked=0, Total=26732 [2023-02-18 13:21:25,554 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 [2023-02-18 13:21:25,555 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] [2023-02-18 13:21:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-02-18 13:21:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 480. [2023-02-18 13:21:25,677 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) [2023-02-18 13:21:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 651 transitions. [2023-02-18 13:21:25,678 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 651 transitions. Word has length 30 [2023-02-18 13:21:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:21:25,679 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 651 transitions. [2023-02-18 13:21:25,679 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) [2023-02-18 13:21:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 651 transitions. [2023-02-18 13:21:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:21:25,680 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:21:25,680 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:21:25,689 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 [2023-02-18 13:21:25,888 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 [2023-02-18 13:21:25,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:21:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:21:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1578956756, now seen corresponding path program 6 times [2023-02-18 13:21:25,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:21:25,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615388405] [2023-02-18 13:21:25,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 13:21:25,890 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 [2023-02-18 13:21:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:21:25,891 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) [2023-02-18 13:21:25,891 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 [2023-02-18 13:21:25,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-18 13:21:25,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:21:25,932 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-18 13:21:25,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:21:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:21:26,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:21:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:21:29,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:21:29,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615388405] [2023-02-18 13:21:29,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615388405] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:21:29,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:21:29,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:21:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361670809] [2023-02-18 13:21:29,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:21:29,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:21:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:21:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:21:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2449, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:21:29,303 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) [2023-02-18 13:22:13,988 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] [2023-02-18 13:22:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:22:24,313 INFO L93 Difference]: Finished difference Result 1004 states and 1335 transitions. [2023-02-18 13:22:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-18 13:22:24,315 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 [2023-02-18 13:22:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:22:24,318 INFO L225 Difference]: With dead ends: 1004 [2023-02-18 13:22:24,318 INFO L226 Difference]: Without dead ends: 990 [2023-02-18 13:22:24,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17936 ImplicationChecksByTransitivity, 47.3s TimeCoverageRelationStatistics Valid=7493, Invalid=46563, Unknown=0, NotChecked=0, Total=54056 [2023-02-18 13:22:24,321 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 328 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s 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, 10.4s IncrementalHoareTripleChecker+Time [2023-02-18 13:22:24,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 315 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2041 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2023-02-18 13:22:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-02-18 13:22:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 802. [2023-02-18 13:22:24,584 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) [2023-02-18 13:22:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1100 transitions. [2023-02-18 13:22:24,586 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1100 transitions. Word has length 30 [2023-02-18 13:22:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:22:24,586 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1100 transitions. [2023-02-18 13:22:24,587 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) [2023-02-18 13:22:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1100 transitions. [2023-02-18 13:22:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:22:24,587 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:22:24,588 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 13:22:24,597 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 (12)] Forceful destruction successful, exit code 0 [2023-02-18 13:22:24,796 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 [2023-02-18 13:22:24,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:22:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:22:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash -497923054, now seen corresponding path program 7 times [2023-02-18 13:22:24,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:22:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843171998] [2023-02-18 13:22:24,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 13:22:24,797 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 [2023-02-18 13:22:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:22:24,798 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) [2023-02-18 13:22:24,799 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 [2023-02-18 13:22:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:22:24,834 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 13:22:24,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:22:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:22:25,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:22:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:22:27,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:22:27,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843171998] [2023-02-18 13:22:27,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843171998] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:22:27,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:22:27,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:22:27,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262702477] [2023-02-18 13:22:27,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:22:27,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:22:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:22:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:22:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2257, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:22:27,177 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) [2023-02-18 13:22:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:22:47,262 INFO L93 Difference]: Finished difference Result 1186 states and 1602 transitions. [2023-02-18 13:22:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2023-02-18 13:22:47,263 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 [2023-02-18 13:22:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:22:47,266 INFO L225 Difference]: With dead ends: 1186 [2023-02-18 13:22:47,266 INFO L226 Difference]: Without dead ends: 1138 [2023-02-18 13:22:47,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15913 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=6191, Invalid=41551, Unknown=0, NotChecked=0, Total=47742 [2023-02-18 13:22:47,269 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 214 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-02-18 13:22:47,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 145 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-18 13:22:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-02-18 13:22:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 930. [2023-02-18 13:22:47,668 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) [2023-02-18 13:22:47,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1273 transitions. [2023-02-18 13:22:47,670 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1273 transitions. Word has length 30 [2023-02-18 13:22:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:22:47,670 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1273 transitions. [2023-02-18 13:22:47,670 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) [2023-02-18 13:22:47,671 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1273 transitions. [2023-02-18 13:22:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:22:47,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:22:47,672 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 13:22:47,679 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 [2023-02-18 13:22:47,876 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 [2023-02-18 13:22:47,877 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:22:47,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:22:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1120723122, now seen corresponding path program 8 times [2023-02-18 13:22:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:22:47,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506581203] [2023-02-18 13:22:47,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:22:47,878 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 [2023-02-18 13:22:47,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:22:47,879 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) [2023-02-18 13:22:47,879 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 [2023-02-18 13:22:47,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:22:47,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:22:47,905 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 13:22:47,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:22:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:22:48,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:22:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:22:50,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:22:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506581203] [2023-02-18 13:22:50,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506581203] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:22:50,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:22:50,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:22:50,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687445203] [2023-02-18 13:22:50,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:22:50,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:22:50,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:22:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:22:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2285, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:22:50,321 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) [2023-02-18 13:23:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:23:04,443 INFO L93 Difference]: Finished difference Result 1195 states and 1622 transitions. [2023-02-18 13:23:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-18 13:23:04,444 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 [2023-02-18 13:23:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:23:04,446 INFO L225 Difference]: With dead ends: 1195 [2023-02-18 13:23:04,446 INFO L226 Difference]: Without dead ends: 1131 [2023-02-18 13:23:04,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9482 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=4178, Invalid=26622, Unknown=0, NotChecked=0, Total=30800 [2023-02-18 13:23:04,449 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 185 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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 [2023-02-18 13:23:04,449 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] [2023-02-18 13:23:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2023-02-18 13:23:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 978. [2023-02-18 13:23:04,833 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) [2023-02-18 13:23:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1336 transitions. [2023-02-18 13:23:04,835 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1336 transitions. Word has length 30 [2023-02-18 13:23:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:23:04,836 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1336 transitions. [2023-02-18 13:23:04,836 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) [2023-02-18 13:23:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1336 transitions. [2023-02-18 13:23:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:23:04,837 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:23:04,837 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:23:04,849 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 [2023-02-18 13:23:05,046 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 [2023-02-18 13:23:05,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:23:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:23:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1378888560, now seen corresponding path program 9 times [2023-02-18 13:23:05,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:23:05,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712654197] [2023-02-18 13:23:05,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 13:23:05,047 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 [2023-02-18 13:23:05,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:23:05,048 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) [2023-02-18 13:23:05,050 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 [2023-02-18 13:23:05,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 13:23:05,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:23:05,086 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 13:23:05,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:23:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:23:06,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:23:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:23:09,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:23:09,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712654197] [2023-02-18 13:23:09,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712654197] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:23:09,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:23:09,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:23:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687302606] [2023-02-18 13:23:09,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:23:09,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:23:09,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:23:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:23:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:23:09,269 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) [2023-02-18 13:23:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:23:36,735 INFO L93 Difference]: Finished difference Result 1617 states and 2170 transitions. [2023-02-18 13:23:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-18 13:23:36,736 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 [2023-02-18 13:23:36,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:23:36,741 INFO L225 Difference]: With dead ends: 1617 [2023-02-18 13:23:36,741 INFO L226 Difference]: Without dead ends: 1609 [2023-02-18 13:23:36,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10785 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=5368, Invalid=27574, Unknown=0, NotChecked=0, Total=32942 [2023-02-18 13:23:36,743 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 [2023-02-18 13:23:36,743 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] [2023-02-18 13:23:36,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-02-18 13:23:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1317. [2023-02-18 13:23:37,301 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) [2023-02-18 13:23:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1811 transitions. [2023-02-18 13:23:37,303 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1811 transitions. Word has length 30 [2023-02-18 13:23:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:23:37,304 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1811 transitions. [2023-02-18 13:23:37,304 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) [2023-02-18 13:23:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1811 transitions. [2023-02-18 13:23:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:23:37,305 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:23:37,305 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 13:23:37,318 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 [2023-02-18 13:23:37,514 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 [2023-02-18 13:23:37,514 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:23:37,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:23:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1436146862, now seen corresponding path program 10 times [2023-02-18 13:23:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:23:37,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232439338] [2023-02-18 13:23:37,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 13:23:37,515 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 [2023-02-18 13:23:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:23:37,516 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) [2023-02-18 13:23:37,517 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 [2023-02-18 13:23:37,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 13:23:37,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:23:37,545 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-18 13:23:37,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:23:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:23:38,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:23:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:23:41,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:23:41,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232439338] [2023-02-18 13:23:41,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232439338] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:23:41,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:23:41,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:23:41,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617172706] [2023-02-18 13:23:41,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:23:41,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:23:41,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:23:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:23:41,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2263, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:23:41,140 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) [2023-02-18 13:24:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:24:13,813 INFO L93 Difference]: Finished difference Result 1636 states and 2237 transitions. [2023-02-18 13:24:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-02-18 13:24:13,813 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 [2023-02-18 13:24:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:24:13,816 INFO L225 Difference]: With dead ends: 1636 [2023-02-18 13:24:13,816 INFO L226 Difference]: Without dead ends: 1590 [2023-02-18 13:24:13,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=4669, Invalid=27193, Unknown=0, NotChecked=0, Total=31862 [2023-02-18 13:24:13,818 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 176 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-02-18 13:24:13,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 164 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-02-18 13:24:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2023-02-18 13:24:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1424. [2023-02-18 13:24:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 1.3836964160224876) internal successors, (1969), 1423 states have internal predecessors, (1969), 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) [2023-02-18 13:24:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1969 transitions. [2023-02-18 13:24:14,445 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1969 transitions. Word has length 30 [2023-02-18 13:24:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:24:14,446 INFO L495 AbstractCegarLoop]: Abstraction has 1424 states and 1969 transitions. [2023-02-18 13:24:14,446 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) [2023-02-18 13:24:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1969 transitions. [2023-02-18 13:24:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:24:14,447 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:24:14,447 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 13:24:14,458 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 (16)] Ended with exit code 0 [2023-02-18 13:24:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-02-18 13:24:14,656 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:24:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:24:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash 216357974, now seen corresponding path program 11 times [2023-02-18 13:24:14,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:24:14,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137534776] [2023-02-18 13:24:14,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 13:24:14,657 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 [2023-02-18 13:24:14,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:24:14,658 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-02-18 13:24:14,658 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 (17)] Waiting until timeout for monitored process [2023-02-18 13:24:14,688 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-18 13:24:14,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:24:14,690 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-18 13:24:14,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:24:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:24:15,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:24:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:24:17,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:24:17,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137534776] [2023-02-18 13:24:17,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137534776] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:24:17,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:24:17,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:24:17,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936693951] [2023-02-18 13:24:17,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:24:17,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:24:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:24:17,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:24:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2258, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:24:17,160 INFO L87 Difference]: Start difference. First operand 1424 states and 1969 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) [2023-02-18 13:24:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:24:37,664 INFO L93 Difference]: Finished difference Result 1793 states and 2474 transitions. [2023-02-18 13:24:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2023-02-18 13:24:37,665 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 [2023-02-18 13:24:37,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:24:37,670 INFO L225 Difference]: With dead ends: 1793 [2023-02-18 13:24:37,670 INFO L226 Difference]: Without dead ends: 1751 [2023-02-18 13:24:37,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13916 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=5348, Invalid=37294, Unknown=0, NotChecked=0, Total=42642 [2023-02-18 13:24:37,673 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 145 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-18 13:24:37,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 83 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-18 13:24:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2023-02-18 13:24:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1530. [2023-02-18 13:24:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 1.381948986265533) internal successors, (2113), 1529 states have internal predecessors, (2113), 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) [2023-02-18 13:24:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2113 transitions. [2023-02-18 13:24:38,240 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2113 transitions. Word has length 30 [2023-02-18 13:24:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:24:38,240 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 2113 transitions. [2023-02-18 13:24:38,241 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) [2023-02-18 13:24:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2113 transitions. [2023-02-18 13:24:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:24:38,241 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:24:38,241 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 13:24:38,249 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 (17)] Forceful destruction successful, exit code 0 [2023-02-18 13:24:38,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-02-18 13:24:38,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:24:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:24:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash -406442094, now seen corresponding path program 12 times [2023-02-18 13:24:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:24:38,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871164873] [2023-02-18 13:24:38,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 13:24:38,443 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 [2023-02-18 13:24:38,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:24:38,444 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-02-18 13:24:38,446 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 (18)] Waiting until timeout for monitored process [2023-02-18 13:24:38,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-18 13:24:38,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:24:38,477 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-18 13:24:38,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:24:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:24:39,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:24:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:24:41,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:24:41,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871164873] [2023-02-18 13:24:41,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871164873] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:24:41,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:24:41,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:24:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41851233] [2023-02-18 13:24:41,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:24:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:24:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:24:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:24:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2416, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:24:41,461 INFO L87 Difference]: Start difference. First operand 1530 states and 2113 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) [2023-02-18 13:24:45,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-18 13:24:55,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-18 13:25:04,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-18 13:25:06,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-18 13:25:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:25:18,520 INFO L93 Difference]: Finished difference Result 1940 states and 2657 transitions. [2023-02-18 13:25:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-02-18 13:25:18,521 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 [2023-02-18 13:25:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:25:18,525 INFO L225 Difference]: With dead ends: 1940 [2023-02-18 13:25:18,525 INFO L226 Difference]: Without dead ends: 1930 [2023-02-18 13:25:18,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11058 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=5275, Invalid=30257, Unknown=0, NotChecked=0, Total=35532 [2023-02-18 13:25:18,527 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 219 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 213 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-02-18 13:25:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 123 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1565 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2023-02-18 13:25:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2023-02-18 13:25:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1794. [2023-02-18 13:25:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1793 states have (on average 1.3842721695482432) internal successors, (2482), 1793 states have internal predecessors, (2482), 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) [2023-02-18 13:25:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2482 transitions. [2023-02-18 13:25:19,218 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2482 transitions. Word has length 30 [2023-02-18 13:25:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:25:19,218 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2482 transitions. [2023-02-18 13:25:19,218 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) [2023-02-18 13:25:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2482 transitions. [2023-02-18 13:25:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:25:19,219 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:25:19,219 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:25:19,227 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 (18)] Forceful destruction successful, exit code 0 [2023-02-18 13:25:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-02-18 13:25:19,421 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:25:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:25:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash -463700396, now seen corresponding path program 13 times [2023-02-18 13:25:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:25:19,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655376783] [2023-02-18 13:25:19,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 13:25:19,422 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 [2023-02-18 13:25:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:25:19,423 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-02-18 13:25:19,424 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 (19)] Waiting until timeout for monitored process [2023-02-18 13:25:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:25:19,454 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-18 13:25:19,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:25:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:25:19,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:25:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:25:22,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:25:22,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655376783] [2023-02-18 13:25:22,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655376783] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:25:22,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:25:22,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:25:22,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530818130] [2023-02-18 13:25:22,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:25:22,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:25:22,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:25:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:25:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2258, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:25:22,080 INFO L87 Difference]: Start difference. First operand 1794 states and 2482 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) [2023-02-18 13:25:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:25:45,367 INFO L93 Difference]: Finished difference Result 2168 states and 2976 transitions. [2023-02-18 13:25:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-02-18 13:25:45,367 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 [2023-02-18 13:25:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:25:45,372 INFO L225 Difference]: With dead ends: 2168 [2023-02-18 13:25:45,372 INFO L226 Difference]: Without dead ends: 2100 [2023-02-18 13:25:45,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13384 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=5263, Invalid=36149, Unknown=0, NotChecked=0, Total=41412 [2023-02-18 13:25:45,374 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 195 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:25:45,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 189 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-18 13:25:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2023-02-18 13:25:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1909. [2023-02-18 13:25:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 1.3831236897274632) internal successors, (2639), 1908 states have internal predecessors, (2639), 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) [2023-02-18 13:25:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2639 transitions. [2023-02-18 13:25:46,135 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2639 transitions. Word has length 30 [2023-02-18 13:25:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:25:46,135 INFO L495 AbstractCegarLoop]: Abstraction has 1909 states and 2639 transitions. [2023-02-18 13:25:46,136 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) [2023-02-18 13:25:46,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2639 transitions. [2023-02-18 13:25:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:25:46,137 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:25:46,137 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:25:46,147 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 (19)] Forceful destruction successful, exit code 0 [2023-02-18 13:25:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-02-18 13:25:46,339 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:25:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:25:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -41807464, now seen corresponding path program 14 times [2023-02-18 13:25:46,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:25:46,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141210256] [2023-02-18 13:25:46,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:25:46,340 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 [2023-02-18 13:25:46,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:25:46,341 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-02-18 13:25:46,345 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 (20)] Waiting until timeout for monitored process [2023-02-18 13:25:46,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:25:46,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:25:46,370 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-18 13:25:46,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:25:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:25:46,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:25:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:25:49,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:25:49,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141210256] [2023-02-18 13:25:49,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141210256] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:25:49,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:25:49,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:25:49,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381021060] [2023-02-18 13:25:49,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:25:49,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:25:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:25:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:25:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2260, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:25:49,092 INFO L87 Difference]: Start difference. First operand 1909 states and 2639 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) [2023-02-18 13:26:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:26:12,936 INFO L93 Difference]: Finished difference Result 2173 states and 2983 transitions. [2023-02-18 13:26:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-02-18 13:26:12,939 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 [2023-02-18 13:26:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:26:12,943 INFO L225 Difference]: With dead ends: 2173 [2023-02-18 13:26:12,943 INFO L226 Difference]: Without dead ends: 2126 [2023-02-18 13:26:12,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11849 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=5291, Invalid=32539, Unknown=0, NotChecked=0, Total=37830 [2023-02-18 13:26:12,945 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 204 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:26:12,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 113 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-18 13:26:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2023-02-18 13:26:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1952. [2023-02-18 13:26:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 1.3823680164018453) internal successors, (2697), 1951 states have internal predecessors, (2697), 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) [2023-02-18 13:26:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2697 transitions. [2023-02-18 13:26:13,751 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2697 transitions. Word has length 30 [2023-02-18 13:26:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:26:13,751 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2697 transitions. [2023-02-18 13:26:13,751 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) [2023-02-18 13:26:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2697 transitions. [2023-02-18 13:26:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:26:13,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:26:13,752 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 13:26:13,758 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 (20)] Forceful destruction successful, exit code 0 [2023-02-18 13:26:13,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-02-18 13:26:13,953 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:26:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:26:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash -721865834, now seen corresponding path program 15 times [2023-02-18 13:26:13,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:26:13,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818447808] [2023-02-18 13:26:13,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 13:26:13,954 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 [2023-02-18 13:26:13,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:26:13,955 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-02-18 13:26:13,956 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 (21)] Waiting until timeout for monitored process [2023-02-18 13:26:13,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 13:26:13,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:26:13,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-18 13:26:13,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:26:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:26:15,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:26:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:26:19,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:26:19,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818447808] [2023-02-18 13:26:19,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818447808] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:26:19,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:26:19,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:26:19,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702861881] [2023-02-18 13:26:19,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:26:19,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:26:19,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:26:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:26:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:26:19,115 INFO L87 Difference]: Start difference. First operand 1952 states and 2697 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) [2023-02-18 13:27:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:27:11,417 INFO L93 Difference]: Finished difference Result 2786 states and 3792 transitions. [2023-02-18 13:27:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-02-18 13:27:11,418 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 [2023-02-18 13:27:11,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:27:11,424 INFO L225 Difference]: With dead ends: 2786 [2023-02-18 13:27:11,424 INFO L226 Difference]: Without dead ends: 2720 [2023-02-18 13:27:11,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13807 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=6221, Invalid=36009, Unknown=0, NotChecked=0, Total=42230 [2023-02-18 13:27:11,426 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 296 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-02-18 13:27:11,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 180 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-02-18 13:27:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2023-02-18 13:27:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2382. [2023-02-18 13:27:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.3834523309533808) internal successors, (3294), 2381 states have internal predecessors, (3294), 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) [2023-02-18 13:27:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3294 transitions. [2023-02-18 13:27:12,418 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3294 transitions. Word has length 30 [2023-02-18 13:27:12,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:27:12,418 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3294 transitions. [2023-02-18 13:27:12,419 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) [2023-02-18 13:27:12,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3294 transitions. [2023-02-18 13:27:12,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:27:12,420 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:27:12,420 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 13:27:12,429 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 (21)] Forceful destruction successful, exit code 0 [2023-02-18 13:27:12,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-02-18 13:27:12,622 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:27:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:27:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1553479954, now seen corresponding path program 16 times [2023-02-18 13:27:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:27:12,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015067738] [2023-02-18 13:27:12,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 13:27:12,623 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 [2023-02-18 13:27:12,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:27:12,624 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-02-18 13:27:12,626 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 (22)] Waiting until timeout for monitored process [2023-02-18 13:27:12,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 13:27:12,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:27:12,648 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 13:27:12,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:27:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:27:13,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:27:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:27:15,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:27:15,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015067738] [2023-02-18 13:27:15,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015067738] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:27:15,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:27:15,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:27:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537110158] [2023-02-18 13:27:15,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:27:15,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:27:15,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:27:15,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:27:15,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2305, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:27:15,169 INFO L87 Difference]: Start difference. First operand 2382 states and 3294 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) [2023-02-18 13:27:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:27:29,401 INFO L93 Difference]: Finished difference Result 2585 states and 3564 transitions. [2023-02-18 13:27:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-02-18 13:27:29,402 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 [2023-02-18 13:27:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:27:29,408 INFO L225 Difference]: With dead ends: 2585 [2023-02-18 13:27:29,408 INFO L226 Difference]: Without dead ends: 2535 [2023-02-18 13:27:29,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7613 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=3344, Invalid=22416, Unknown=0, NotChecked=0, Total=25760 [2023-02-18 13:27:29,410 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 191 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-02-18 13:27:29,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 115 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-02-18 13:27:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2023-02-18 13:27:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2397. [2023-02-18 13:27:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 1.3814691151919867) internal successors, (3310), 2396 states have internal predecessors, (3310), 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) [2023-02-18 13:27:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3310 transitions. [2023-02-18 13:27:30,420 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3310 transitions. Word has length 30 [2023-02-18 13:27:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:27:30,421 INFO L495 AbstractCegarLoop]: Abstraction has 2397 states and 3310 transitions. [2023-02-18 13:27:30,421 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) [2023-02-18 13:27:30,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3310 transitions. [2023-02-18 13:27:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:27:30,422 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:27:30,422 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 13:27:30,428 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 (22)] Forceful destruction successful, exit code 0 [2023-02-18 13:27:30,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-02-18 13:27:30,623 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:27:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:27:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash 816163282, now seen corresponding path program 17 times [2023-02-18 13:27:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:27:30,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606344345] [2023-02-18 13:27:30,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 13:27:30,624 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 [2023-02-18 13:27:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:27:30,625 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-02-18 13:27:30,626 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 (23)] Waiting until timeout for monitored process [2023-02-18 13:27:30,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-18 13:27:30,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:27:30,651 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-18 13:27:30,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:27:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:27:31,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:27:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:27:34,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:27:34,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606344345] [2023-02-18 13:27:34,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606344345] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:27:34,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:27:34,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:27:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2274869] [2023-02-18 13:27:34,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:27:34,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:27:34,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:27:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:27:34,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2264, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:27:34,588 INFO L87 Difference]: Start difference. First operand 2397 states and 3310 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) [2023-02-18 13:28:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:28:04,813 INFO L93 Difference]: Finished difference Result 2598 states and 3576 transitions. [2023-02-18 13:28:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-02-18 13:28:04,813 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 [2023-02-18 13:28:04,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:28:04,819 INFO L225 Difference]: With dead ends: 2598 [2023-02-18 13:28:04,819 INFO L226 Difference]: Without dead ends: 2545 [2023-02-18 13:28:04,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7783 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=3687, Invalid=23703, Unknown=0, NotChecked=0, Total=27390 [2023-02-18 13:28:04,820 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 136 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:28:04,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 126 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-02-18 13:28:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2023-02-18 13:28:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2408. [2023-02-18 13:28:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2407 states have (on average 1.3809721645201496) internal successors, (3324), 2407 states have internal predecessors, (3324), 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) [2023-02-18 13:28:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3324 transitions. [2023-02-18 13:28:05,825 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3324 transitions. Word has length 30 [2023-02-18 13:28:05,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:28:05,825 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3324 transitions. [2023-02-18 13:28:05,825 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) [2023-02-18 13:28:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3324 transitions. [2023-02-18 13:28:05,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:28:05,826 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:28:05,827 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 13:28:05,841 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 (23)] Forceful destruction successful, exit code 0 [2023-02-18 13:28:06,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-02-18 13:28:06,035 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:28:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:28:06,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1238056214, now seen corresponding path program 18 times [2023-02-18 13:28:06,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:28:06,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136139851] [2023-02-18 13:28:06,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 13:28:06,035 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 [2023-02-18 13:28:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:28:06,036 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-02-18 13:28:06,037 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 (24)] Waiting until timeout for monitored process [2023-02-18 13:28:06,064 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-18 13:28:06,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:28:06,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-18 13:28:06,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:28:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:28:06,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:28:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:28:09,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:28:09,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136139851] [2023-02-18 13:28:09,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136139851] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:28:09,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:28:09,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:28:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645562565] [2023-02-18 13:28:09,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:28:09,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:28:09,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:28:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:28:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=2440, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:28:09,920 INFO L87 Difference]: Start difference. First operand 2408 states and 3324 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) [2023-02-18 13:29:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:29:36,450 INFO L93 Difference]: Finished difference Result 3007 states and 4134 transitions. [2023-02-18 13:29:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-02-18 13:29:36,452 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 [2023-02-18 13:29:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:29:36,460 INFO L225 Difference]: With dead ends: 3007 [2023-02-18 13:29:36,460 INFO L226 Difference]: Without dead ends: 2997 [2023-02-18 13:29:36,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17290 ImplicationChecksByTransitivity, 78.0s TimeCoverageRelationStatistics Valid=7617, Invalid=43685, Unknown=0, NotChecked=0, Total=51302 [2023-02-18 13:29:36,463 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 259 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-02-18 13:29:36,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 178 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-02-18 13:29:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2023-02-18 13:29:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2850. [2023-02-18 13:29:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 1.382941382941383) internal successors, (3940), 2849 states have internal predecessors, (3940), 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) [2023-02-18 13:29:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3940 transitions. [2023-02-18 13:29:37,714 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3940 transitions. Word has length 30 [2023-02-18 13:29:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:29:37,714 INFO L495 AbstractCegarLoop]: Abstraction has 2850 states and 3940 transitions. [2023-02-18 13:29:37,714 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) [2023-02-18 13:29:37,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3940 transitions. [2023-02-18 13:29:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:29:37,715 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:29:37,716 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:29:37,723 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 (24)] Forceful destruction successful, exit code 0 [2023-02-18 13:29:37,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-02-18 13:29:37,920 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:29:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:29:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash 557997844, now seen corresponding path program 19 times [2023-02-18 13:29:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:29:37,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031445777] [2023-02-18 13:29:37,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 13:29:37,921 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 [2023-02-18 13:29:37,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:29:37,922 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-02-18 13:29:37,923 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 (25)] Waiting until timeout for monitored process [2023-02-18 13:29:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:29:37,947 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 13:29:37,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:29:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:29:38,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:29:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:29:44,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:29:44,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031445777] [2023-02-18 13:29:44,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031445777] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:29:44,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:29:44,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:29:44,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319468500] [2023-02-18 13:29:44,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:29:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:29:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:29:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:29:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2270, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:29:44,289 INFO L87 Difference]: Start difference. First operand 2850 states and 3940 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) [2023-02-18 13:30:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:30:44,690 INFO L93 Difference]: Finished difference Result 3214 states and 4446 transitions. [2023-02-18 13:30:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-02-18 13:30:44,690 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 [2023-02-18 13:30:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:30:44,696 INFO L225 Difference]: With dead ends: 3214 [2023-02-18 13:30:44,696 INFO L226 Difference]: Without dead ends: 3124 [2023-02-18 13:30:44,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7931 ImplicationChecksByTransitivity, 57.7s TimeCoverageRelationStatistics Valid=4187, Invalid=23535, Unknown=0, NotChecked=0, Total=27722 [2023-02-18 13:30:44,698 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 163 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-02-18 13:30:44,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 112 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-02-18 13:30:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2023-02-18 13:30:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2939. [2023-02-18 13:30:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2938 states have (on average 1.3846153846153846) internal successors, (4068), 2938 states have internal predecessors, (4068), 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) [2023-02-18 13:30:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 4068 transitions. [2023-02-18 13:30:46,052 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 4068 transitions. Word has length 30 [2023-02-18 13:30:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:30:46,052 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 4068 transitions. [2023-02-18 13:30:46,052 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) [2023-02-18 13:30:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 4068 transitions. [2023-02-18 13:30:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:30:46,053 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:30:46,053 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:30:46,059 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 (25)] Forceful destruction successful, exit code 0 [2023-02-18 13:30:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-02-18 13:30:46,254 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:30:46,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:30:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2143230256, now seen corresponding path program 20 times [2023-02-18 13:30:46,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:30:46,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536122830] [2023-02-18 13:30:46,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:30:46,255 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 [2023-02-18 13:30:46,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:30:46,256 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-02-18 13:30:46,257 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 (26)] Waiting until timeout for monitored process [2023-02-18 13:30:46,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:30:46,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:30:46,280 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 13:30:46,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:30:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:30:46,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:30:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:30:48,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:30:48,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536122830] [2023-02-18 13:30:48,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536122830] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:30:48,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:30:48,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:30:48,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918343443] [2023-02-18 13:30:48,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:30:48,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:30:48,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:30:48,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:30:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:30:48,931 INFO L87 Difference]: Start difference. First operand 2939 states and 4068 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) [2023-02-18 13:30:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:30:58,541 INFO L93 Difference]: Finished difference Result 3118 states and 4300 transitions. [2023-02-18 13:30:58,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-02-18 13:30:58,541 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 [2023-02-18 13:30:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:30:58,546 INFO L225 Difference]: With dead ends: 3118 [2023-02-18 13:30:58,546 INFO L226 Difference]: Without dead ends: 3072 [2023-02-18 13:30:58,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4100 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2389, Invalid=13613, Unknown=0, NotChecked=0, Total=16002 [2023-02-18 13:30:58,548 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 133 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:30:58,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 181 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-18 13:30:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2023-02-18 13:30:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2969. [2023-02-18 13:30:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 1.381064690026954) internal successors, (4099), 2968 states have internal predecessors, (4099), 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) [2023-02-18 13:30:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4099 transitions. [2023-02-18 13:30:59,940 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4099 transitions. Word has length 30 [2023-02-18 13:30:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:30:59,941 INFO L495 AbstractCegarLoop]: Abstraction has 2969 states and 4099 transitions. [2023-02-18 13:30:59,941 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) [2023-02-18 13:30:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4099 transitions. [2023-02-18 13:30:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:30:59,942 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:30:59,942 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:30:59,956 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 (26)] Forceful destruction successful, exit code 0 [2023-02-18 13:31:00,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-02-18 13:31:00,151 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:31:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:31:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1414420368, now seen corresponding path program 21 times [2023-02-18 13:31:00,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:31:00,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033172156] [2023-02-18 13:31:00,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 13:31:00,152 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 [2023-02-18 13:31:00,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:31:00,153 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-02-18 13:31:00,154 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 (27)] Waiting until timeout for monitored process [2023-02-18 13:31:00,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 13:31:00,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:31:00,177 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 13:31:00,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:31:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 18 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:31:01,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:31:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:31:04,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:31:04,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033172156] [2023-02-18 13:31:04,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033172156] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:31:04,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:31:04,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:31:04,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640329787] [2023-02-18 13:31:04,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:31:04,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:31:04,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:31:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:31:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=2411, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:31:04,292 INFO L87 Difference]: Start difference. First operand 2969 states and 4099 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) [2023-02-18 13:32:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:00,624 INFO L93 Difference]: Finished difference Result 3315 states and 4557 transitions. [2023-02-18 13:32:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-02-18 13:32:00,626 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 [2023-02-18 13:32:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:00,630 INFO L225 Difference]: With dead ends: 3315 [2023-02-18 13:32:00,630 INFO L226 Difference]: Without dead ends: 3299 [2023-02-18 13:32:00,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15925 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=7199, Invalid=37957, Unknown=0, NotChecked=0, Total=45156 [2023-02-18 13:32:00,632 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 298 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:32:00,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 70 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-02-18 13:32:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2023-02-18 13:32:02,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3134. [2023-02-18 13:32:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3134 states, 3133 states have (on average 1.3795084583466326) internal successors, (4322), 3133 states have internal predecessors, (4322), 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) [2023-02-18 13:32:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 4322 transitions. [2023-02-18 13:32:02,106 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 4322 transitions. Word has length 30 [2023-02-18 13:32:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:02,106 INFO L495 AbstractCegarLoop]: Abstraction has 3134 states and 4322 transitions. [2023-02-18 13:32:02,106 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) [2023-02-18 13:32:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 4322 transitions. [2023-02-18 13:32:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:32:02,107 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:02,107 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:02,113 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 (27)] Forceful destruction successful, exit code 0 [2023-02-18 13:32:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-02-18 13:32:02,308 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1836313300, now seen corresponding path program 22 times [2023-02-18 13:32:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:32:02,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725514951] [2023-02-18 13:32:02,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 13:32:02,309 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 [2023-02-18 13:32:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:32:02,310 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-02-18 13:32:02,313 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 (28)] Waiting until timeout for monitored process [2023-02-18 13:32:02,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 13:32:02,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:32:02,335 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-18 13:32:02,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:32:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:02,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:32:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:05,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:32:05,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725514951] [2023-02-18 13:32:05,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725514951] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:32:05,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:32:05,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-18 13:32:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388250041] [2023-02-18 13:32:05,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:32:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 13:32:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:32:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 13:32:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 13:32:05,265 INFO L87 Difference]: Start difference. First operand 3134 states and 4322 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) [2023-02-18 13:32:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:32:31,738 INFO L93 Difference]: Finished difference Result 3443 states and 4726 transitions. [2023-02-18 13:32:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-02-18 13:32:31,739 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 [2023-02-18 13:32:31,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:32:31,743 INFO L225 Difference]: With dead ends: 3443 [2023-02-18 13:32:31,743 INFO L226 Difference]: Without dead ends: 3400 [2023-02-18 13:32:31,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12440 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=5156, Invalid=33850, Unknown=0, NotChecked=0, Total=39006 [2023-02-18 13:32:31,745 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 216 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:32:31,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 188 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-02-18 13:32:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2023-02-18 13:32:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3240. [2023-02-18 13:32:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3239 states have (on average 1.3803643099722136) internal successors, (4471), 3239 states have internal predecessors, (4471), 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) [2023-02-18 13:32:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4471 transitions. [2023-02-18 13:32:33,285 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4471 transitions. Word has length 30 [2023-02-18 13:32:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:32:33,285 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 4471 transitions. [2023-02-18 13:32:33,285 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) [2023-02-18 13:32:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4471 transitions. [2023-02-18 13:32:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:32:33,286 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:32:33,286 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 13:32:33,296 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 (28)] Forceful destruction successful, exit code 0 [2023-02-18 13:32:33,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-02-18 13:32:33,493 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:32:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:32:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1213513232, now seen corresponding path program 23 times [2023-02-18 13:32:33,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:32:33,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750776852] [2023-02-18 13:32:33,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 13:32:33,494 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 [2023-02-18 13:32:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:32:33,494 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-02-18 13:32:33,495 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 (29)] Waiting until timeout for monitored process [2023-02-18 13:32:33,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-18 13:32:33,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:32:33,521 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-18 13:32:33,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:32:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:35,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:32:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:32:38,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:32:38,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750776852] [2023-02-18 13:32:38,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750776852] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:32:38,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:32:38,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 51 [2023-02-18 13:32:38,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606306775] [2023-02-18 13:32:38,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:32:38,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-18 13:32:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:32:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-18 13:32:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2023-02-18 13:32:38,495 INFO L87 Difference]: Start difference. First operand 3240 states and 4471 transitions. Second operand has 51 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 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) [2023-02-18 13:33:07,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:33:07,671 INFO L93 Difference]: Finished difference Result 4301 states and 5899 transitions. [2023-02-18 13:33:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2023-02-18 13:33:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 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 [2023-02-18 13:33:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:33:07,679 INFO L225 Difference]: With dead ends: 4301 [2023-02-18 13:33:07,679 INFO L226 Difference]: Without dead ends: 4113 [2023-02-18 13:33:07,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11116 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=4701, Invalid=30081, Unknown=0, NotChecked=0, Total=34782 [2023-02-18 13:33:07,682 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 305 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-02-18 13:33:07,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 137 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-02-18 13:33:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2023-02-18 13:33:09,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 3530. [2023-02-18 13:33:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3529 states have (on average 1.3791442334939077) internal successors, (4867), 3529 states have internal predecessors, (4867), 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) [2023-02-18 13:33:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 4867 transitions. [2023-02-18 13:33:09,471 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 4867 transitions. Word has length 30 [2023-02-18 13:33:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:33:09,471 INFO L495 AbstractCegarLoop]: Abstraction has 3530 states and 4867 transitions. [2023-02-18 13:33:09,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 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) [2023-02-18 13:33:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 4867 transitions. [2023-02-18 13:33:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 13:33:09,472 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:33:09,472 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 13:33:09,481 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 (29)] Forceful destruction successful, exit code 0 [2023-02-18 13:33:09,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-02-18 13:33:09,673 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:33:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:33:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1156254930, now seen corresponding path program 24 times [2023-02-18 13:33:09,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 13:33:09,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198261220] [2023-02-18 13:33:09,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 13:33:09,674 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 [2023-02-18 13:33:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 13:33:09,676 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-02-18 13:33:09,677 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 (30)] Waiting until timeout for monitored process [2023-02-18 13:33:09,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-18 13:33:09,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:33:09,702 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-18 13:33:09,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:33:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:33:10,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:33:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:33:13,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 13:33:13,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198261220] [2023-02-18 13:33:13,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198261220] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:33:13,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:33:13,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-18 13:33:13,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317174947] [2023-02-18 13:33:13,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:33:13,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-18 13:33:13,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 13:33:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-18 13:33:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2456, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 13:33:13,518 INFO L87 Difference]: Start difference. First operand 3530 states and 4867 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)