./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 26d01a9c 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-?-26d01a9 [2023-02-17 22:02:59,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 22:02:59,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 22:02:59,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 22:02:59,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 22:02:59,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 22:02:59,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 22:02:59,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 22:02:59,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 22:02:59,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 22:02:59,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 22:02:59,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 22:02:59,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 22:02:59,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 22:02:59,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 22:02:59,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 22:02:59,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 22:02:59,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 22:02:59,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 22:02:59,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 22:02:59,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 22:02:59,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 22:02:59,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 22:02:59,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 22:02:59,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 22:02:59,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 22:02:59,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 22:02:59,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 22:02:59,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 22:02:59,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 22:02:59,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 22:02:59,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 22:02:59,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 22:02:59,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 22:02:59,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 22:02:59,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 22:02:59,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 22:02:59,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 22:02:59,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 22:02:59,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 22:02:59,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 22:02:59,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 22:02:59,169 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 22:02:59,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 22:02:59,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 22:02:59,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 22:02:59,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 22:02:59,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 22:02:59,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 22:02:59,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 22:02:59,171 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 22:02:59,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 22:02:59,172 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 22:02:59,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 22:02:59,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 22:02:59,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 22:02:59,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 22:02:59,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 22:02:59,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 22:02:59,173 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 22:02:59,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 22:02:59,174 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 22:02:59,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 22:02:59,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 22:02:59,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 22:02:59,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 22:02:59,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:02:59,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 22:02:59,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 22:02:59,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 22:02:59,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 22:02:59,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 22:02:59,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 22:02:59,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 22:02:59,177 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 22:02:59,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 22:02:59,182 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 22:02:59,182 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-17 22:02:59,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 22:02:59,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 22:02:59,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 22:02:59,412 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 22:02:59,412 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 22:02:59,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 22:03:00,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 22:03:00,620 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 22:03:00,620 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 22:03:00,624 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd655f4c/3420b29372b84a7e962f874eb41c12cf/FLAG4f27f9335 [2023-02-17 22:03:01,008 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd655f4c/3420b29372b84a7e962f874eb41c12cf [2023-02-17 22:03:01,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 22:03:01,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 22:03:01,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 22:03:01,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 22:03:01,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 22:03:01,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e859e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01, skipping insertion in model container [2023-02-17 22:03:01,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 22:03:01,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 22:03:01,132 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 22:03:01,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:03:01,153 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 22:03:01,160 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 22:03:01,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:03:01,170 INFO L208 MainTranslator]: Completed translation [2023-02-17 22:03:01,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01 WrapperNode [2023-02-17 22:03:01,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 22:03:01,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 22:03:01,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 22:03:01,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 22:03:01,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,189 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-17 22:03:01,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 22:03:01,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 22:03:01,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 22:03:01,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 22:03:01,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,204 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 22:03:01,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 22:03:01,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 22:03:01,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 22:03:01,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (1/1) ... [2023-02-17 22:03:01,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:03:01,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:03:01,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 22:03:01,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 22:03:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 22:03:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 22:03:01,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 22:03:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 22:03:01,312 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 22:03:01,314 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 22:03:01,409 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 22:03:01,413 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 22:03:01,414 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 22:03:01,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:03:01 BoogieIcfgContainer [2023-02-17 22:03:01,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 22:03:01,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 22:03:01,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 22:03:01,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 22:03:01,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 10:03:01" (1/3) ... [2023-02-17 22:03:01,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1e9a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:03:01, skipping insertion in model container [2023-02-17 22:03:01,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:01" (2/3) ... [2023-02-17 22:03:01,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1e9a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:03:01, skipping insertion in model container [2023-02-17 22:03:01,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:03:01" (3/3) ... [2023-02-17 22:03:01,421 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-17 22:03:01,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 22:03:01,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 22:03:01,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 22:03:01,482 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;@41742d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 22:03:01,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 22:03:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 22:03:01,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:01,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 22:03:01,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:01,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-17 22:03:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:03:01,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347647677] [2023-02-17 22:03:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:01,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:03:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:01,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:03:01,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347647677] [2023-02-17 22:03:01,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347647677] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:03:01,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:03:01,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 22:03:01,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137134529] [2023-02-17 22:03:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:03:01,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 22:03:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:03:01,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 22:03:01,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 22:03:01,612 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:01,621 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-17 22:03:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 22:03:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 22:03:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:01,628 INFO L225 Difference]: With dead ends: 21 [2023-02-17 22:03:01,628 INFO L226 Difference]: Without dead ends: 9 [2023-02-17 22:03:01,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 22:03:01,635 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:01,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:03:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-17 22:03:01,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-17 22:03:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-17 22:03:01,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-17 22:03:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:01,658 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-17 22:03:01,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-17 22:03:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 22:03:01,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:01,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 22:03:01,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 22:03:01,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-17 22:03:01,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:03:01,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951583065] [2023-02-17 22:03:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:01,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:03:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:01,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:03:01,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951583065] [2023-02-17 22:03:01,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951583065] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:03:01,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:03:01,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 22:03:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487196660] [2023-02-17 22:03:01,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:03:01,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 22:03:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:03:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 22:03:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:03:01,722 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:01,730 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-17 22:03:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 22:03:01,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 22:03:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:01,731 INFO L225 Difference]: With dead ends: 16 [2023-02-17 22:03:01,731 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 22:03:01,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:03:01,733 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:01,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:03:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 22:03:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-17 22:03:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 22:03:01,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-17 22:03:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:01,736 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 22:03:01,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 22:03:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 22:03:01,736 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:01,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:01,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 22:03:01,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:01,738 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-17 22:03:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:03:01,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140533043] [2023-02-17 22:03:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:03:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:01,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:03:01,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140533043] [2023-02-17 22:03:01,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140533043] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:03:01,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689632651] [2023-02-17 22:03:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:01,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:03:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:03:01,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 22:03:01,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 22:03:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:01,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 22:03:01,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:01,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:01,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689632651] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:01,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:03:01,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2023-02-17 22:03:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899788444] [2023-02-17 22:03:01,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:01,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 22:03:01,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:03:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 22:03:01,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-17 22:03:01,949 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:01,980 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-17 22:03:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 22:03:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 22:03:01,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:01,981 INFO L225 Difference]: With dead ends: 23 [2023-02-17 22:03:01,981 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 22:03:01,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2023-02-17 22:03:01,983 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:01,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:03:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 22:03:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 22:03:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 22:03:01,987 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-17 22:03:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:01,987 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 22:03:01,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 22:03:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 22:03:01,988 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:01,988 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:01,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 22:03:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:03:02,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-17 22:03:02,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:03:02,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720350518] [2023-02-17 22:03:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:03:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:02,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:03:02,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720350518] [2023-02-17 22:03:02,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720350518] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:03:02,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717168106] [2023-02-17 22:03:02,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:03:02,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:03:02,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:03:02,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 22:03:02,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 22:03:02,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:03:02,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:03:02,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 22:03:02,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:02,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:02,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717168106] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:02,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:03:02,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2023-02-17 22:03:02,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128487188] [2023-02-17 22:03:02,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:02,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 22:03:02,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:03:02,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 22:03:02,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2023-02-17 22:03:02,712 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:02,884 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-17 22:03:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 22:03:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-17 22:03:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:02,885 INFO L225 Difference]: With dead ends: 41 [2023-02-17 22:03:02,885 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 22:03:02,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2023-02-17 22:03:02,887 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:02,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 96 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 22:03:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 22:03:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-17 22:03:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2023-02-17 22:03:02,892 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2023-02-17 22:03:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:02,892 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2023-02-17 22:03:02,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2023-02-17 22:03:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:03:02,897 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:02,897 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:02,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 22:03:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 22:03:03,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-17 22:03:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:03:03,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939800274] [2023-02-17 22:03:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:03:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 22:03:03,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 22:03:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 22:03:03,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 22:03:03,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 22:03:03,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 22:03:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 22:03:03,193 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-02-17 22:03:03,195 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 22:03:03,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 10:03:03 BoogieIcfgContainer [2023-02-17 22:03:03,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 22:03:03,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 22:03:03,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 22:03:03,237 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 22:03:03,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:03:01" (3/4) ... [2023-02-17 22:03:03,239 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 22:03:03,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 22:03:03,240 INFO L158 Benchmark]: Toolchain (without parser) took 2229.02ms. Allocated memory is still 161.5MB. Free memory was 127.6MB in the beginning and 65.3MB in the end (delta: 62.4MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2023-02-17 22:03:03,240 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 22:03:03,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.74ms. Allocated memory is still 161.5MB. Free memory was 127.6MB in the beginning and 117.7MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 22:03:03,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.10ms. Allocated memory is still 161.5MB. Free memory was 117.7MB in the beginning and 116.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 22:03:03,248 INFO L158 Benchmark]: Boogie Preprocessor took 15.38ms. Allocated memory is still 161.5MB. Free memory was 116.1MB in the beginning and 115.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 22:03:03,248 INFO L158 Benchmark]: RCFGBuilder took 209.01ms. Allocated memory is still 161.5MB. Free memory was 115.1MB in the beginning and 105.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 22:03:03,249 INFO L158 Benchmark]: TraceAbstraction took 1819.14ms. Allocated memory is still 161.5MB. Free memory was 104.6MB in the beginning and 65.3MB in the end (delta: 39.3MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2023-02-17 22:03:03,249 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 161.5MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 22:03:03,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.74ms. Allocated memory is still 161.5MB. Free memory was 127.6MB in the beginning and 117.7MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.10ms. Allocated memory is still 161.5MB. Free memory was 117.7MB in the beginning and 116.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.38ms. Allocated memory is still 161.5MB. Free memory was 116.1MB in the beginning and 115.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 209.01ms. Allocated memory is still 161.5MB. Free memory was 115.1MB in the beginning and 105.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1819.14ms. Allocated memory is still 161.5MB. Free memory was 104.6MB in the beginning and 65.3MB in the end (delta: 39.3MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 161.5MB. Free memory is still 65.3MB. 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: 1.7s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 47 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 8 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-17 22:03:03,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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-?-26d01a9 [2023-02-17 22:03:05,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 22:03:05,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 22:03:05,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 22:03:05,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 22:03:05,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 22:03:05,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 22:03:05,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 22:03:05,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 22:03:05,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 22:03:05,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 22:03:05,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 22:03:05,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 22:03:05,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 22:03:05,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 22:03:05,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 22:03:05,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 22:03:05,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 22:03:05,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 22:03:05,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 22:03:05,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 22:03:05,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 22:03:05,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 22:03:05,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 22:03:05,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 22:03:05,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 22:03:05,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 22:03:05,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 22:03:05,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 22:03:05,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 22:03:05,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 22:03:05,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 22:03:05,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 22:03:05,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 22:03:05,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 22:03:05,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 22:03:05,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 22:03:05,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 22:03:05,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 22:03:05,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 22:03:05,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 22:03:05,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-17 22:03:05,259 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 22:03:05,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 22:03:05,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 22:03:05,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 22:03:05,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 22:03:05,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 22:03:05,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 22:03:05,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 22:03:05,263 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 22:03:05,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 22:03:05,263 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 22:03:05,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 22:03:05,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 22:03:05,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 22:03:05,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 22:03:05,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 22:03:05,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 22:03:05,277 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 22:03:05,277 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 22:03:05,277 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 22:03:05,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 22:03:05,278 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 22:03:05,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 22:03:05,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 22:03:05,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 22:03:05,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 22:03:05,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:03:05,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 22:03:05,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 22:03:05,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 22:03:05,279 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 22:03:05,279 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 22:03:05,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 22:03:05,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 22:03:05,280 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 22:03:05,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 22:03:05,280 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 22:03:05,284 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 22:03:05,284 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-17 22:03:05,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 22:03:05,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 22:03:05,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 22:03:05,604 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 22:03:05,605 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 22:03:05,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 22:03:06,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 22:03:07,006 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 22:03:07,013 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 22:03:07,026 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2729d94/d32481e5403e4078b92bf6d71f3b9971/FLAG73602f332 [2023-02-17 22:03:07,039 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2729d94/d32481e5403e4078b92bf6d71f3b9971 [2023-02-17 22:03:07,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 22:03:07,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 22:03:07,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 22:03:07,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 22:03:07,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 22:03:07,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702d7210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07, skipping insertion in model container [2023-02-17 22:03:07,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 22:03:07,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 22:03:07,198 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 22:03:07,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:03:07,223 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 22:03:07,232 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2023-02-17 22:03:07,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:03:07,248 INFO L208 MainTranslator]: Completed translation [2023-02-17 22:03:07,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07 WrapperNode [2023-02-17 22:03:07,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 22:03:07,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 22:03:07,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 22:03:07,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 22:03:07,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,272 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-17 22:03:07,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 22:03:07,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 22:03:07,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 22:03:07,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 22:03:07,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 22:03:07,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 22:03:07,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 22:03:07,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 22:03:07,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (1/1) ... [2023-02-17 22:03:07,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:03:07,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:03:07,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 22:03:07,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 22:03:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 22:03:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 22:03:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 22:03:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 22:03:07,434 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 22:03:07,435 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 22:03:07,579 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 22:03:07,584 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 22:03:07,585 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 22:03:07,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:03:07 BoogieIcfgContainer [2023-02-17 22:03:07,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 22:03:07,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 22:03:07,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 22:03:07,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 22:03:07,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 10:03:07" (1/3) ... [2023-02-17 22:03:07,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0a51b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:03:07, skipping insertion in model container [2023-02-17 22:03:07,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:03:07" (2/3) ... [2023-02-17 22:03:07,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0a51b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:03:07, skipping insertion in model container [2023-02-17 22:03:07,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:03:07" (3/3) ... [2023-02-17 22:03:07,593 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-17 22:03:07,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 22:03:07,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 22:03:07,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 22:03:07,655 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;@33f924aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 22:03:07,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 22:03:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 22:03:07,663 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:07,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 22:03:07,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-17 22:03:07,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:07,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41693121] [2023-02-17 22:03:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:07,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:07,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:07,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:07,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 22:03:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:07,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 22:03:07,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:07,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 22:03:07,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:07,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41693121] [2023-02-17 22:03:07,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41693121] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:03:07,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:03:07,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 22:03:07,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294985920] [2023-02-17 22:03:07,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:03:07,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 22:03:07,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 22:03:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 22:03:07,885 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:07,897 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-17 22:03:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 22:03:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 22:03:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:07,903 INFO L225 Difference]: With dead ends: 21 [2023-02-17 22:03:07,903 INFO L226 Difference]: Without dead ends: 9 [2023-02-17 22:03:07,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 22:03:07,909 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:07,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:03:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-17 22:03:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-17 22:03:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-17 22:03:07,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-17 22:03:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:07,931 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-17 22:03:07,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-17 22:03:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 22:03:07,932 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:07,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 22:03:07,944 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 [2023-02-17 22:03:08,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:08,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-17 22:03:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:08,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565023492] [2023-02-17 22:03:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:08,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:08,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:08,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 22:03:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:08,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 22:03:08,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:08,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 22:03:08,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:08,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565023492] [2023-02-17 22:03:08,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565023492] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:03:08,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:03:08,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 22:03:08,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877604119] [2023-02-17 22:03:08,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:03:08,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 22:03:08,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 22:03:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:03:08,217 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:08,232 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-17 22:03:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 22:03:08,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 22:03:08,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:08,237 INFO L225 Difference]: With dead ends: 16 [2023-02-17 22:03:08,237 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 22:03:08,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:03:08,239 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:08,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:03:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 22:03:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-17 22:03:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 22:03:08,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-17 22:03:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:08,249 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 22:03:08,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 22:03:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 22:03:08,254 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:08,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:08,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 22:03:08,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:08,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:08,461 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-17 22:03:08,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:08,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617677846] [2023-02-17 22:03:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:08,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:08,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:08,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:08,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 22:03:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:08,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 22:03:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:08,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:08,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:08,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617677846] [2023-02-17 22:03:08,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617677846] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:08,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:03:08,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-17 22:03:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681543528] [2023-02-17 22:03:08,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:08,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 22:03:08,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 22:03:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-17 22:03:08,583 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:08,605 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-17 22:03:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 22:03:08,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 22:03:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:08,612 INFO L225 Difference]: With dead ends: 23 [2023-02-17 22:03:08,612 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 22:03:08,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-17 22:03:08,615 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:08,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:03:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 22:03:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 22:03:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 22:03:08,629 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-17 22:03:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:08,630 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 22:03:08,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 22:03:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 22:03:08,630 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:08,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:08,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-17 22:03:08,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:08,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:08,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-17 22:03:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:08,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091065964] [2023-02-17 22:03:08,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:03:08,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:08,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:08,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:08,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-17 22:03:08,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:03:08,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:03:08,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 22:03:08,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:08,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:08,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:08,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091065964] [2023-02-17 22:03:08,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091065964] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:08,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:03:08,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-17 22:03:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100263786] [2023-02-17 22:03:08,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 22:03:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 22:03:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-17 22:03:08,942 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:09,023 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-02-17 22:03:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 22:03:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-17 22:03:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:09,025 INFO L225 Difference]: With dead ends: 35 [2023-02-17 22:03:09,025 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 22:03:09,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-02-17 22:03:09,026 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:09,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 82 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:03:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 22:03:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-17 22:03:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-17 22:03:09,030 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2023-02-17 22:03:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:09,030 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-17 22:03:09,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-17 22:03:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:03:09,032 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:09,032 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:09,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-17 22:03:09,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:09,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-17 22:03:09,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:09,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93848310] [2023-02-17 22:03:09,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 22:03:09,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:09,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:09,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:09,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-17 22:03:09,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 22:03:09,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:03:09,271 WARN L261 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 22:03:09,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:10,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:12,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:12,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93848310] [2023-02-17 22:03:12,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93848310] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:12,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:03:12,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-02-17 22:03:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391621416] [2023-02-17 22:03:12,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:12,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-17 22:03:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:12,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-17 22:03:12,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2023-02-17 22:03:12,084 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:17,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:17,513 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2023-02-17 22:03:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-17 22:03:17,513 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:03:17,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:17,515 INFO L225 Difference]: With dead ends: 162 [2023-02-17 22:03:17,515 INFO L226 Difference]: Without dead ends: 156 [2023-02-17 22:03:17,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2530, Invalid=9026, Unknown=0, NotChecked=0, Total=11556 [2023-02-17 22:03:17,518 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 [2023-02-17 22:03:17,518 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] [2023-02-17 22:03:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-17 22:03:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2023-02-17 22:03:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 94 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-02-17 22:03:17,540 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 30 [2023-02-17 22:03:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:17,540 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-02-17 22:03:17,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-02-17 22:03:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:03:17,541 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:17,542 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:17,548 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 (6)] Ended with exit code 0 [2023-02-17 22:03:17,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:17,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1777786732, now seen corresponding path program 1 times [2023-02-17 22:03:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:17,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678225935] [2023-02-17 22:03:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:03:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:17,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:17,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:17,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-17 22:03:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:03:17,796 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 22:03:17,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:18,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:20,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:20,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678225935] [2023-02-17 22:03:20,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678225935] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:20,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:03:20,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:03:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685414088] [2023-02-17 22:03:20,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:20,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:03:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:03:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:03:20,241 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:36,129 INFO L93 Difference]: Finished difference Result 419 states and 575 transitions. [2023-02-17 22:03:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-02-17 22:03:36,129 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:03:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:36,133 INFO L225 Difference]: With dead ends: 419 [2023-02-17 22:03:36,133 INFO L226 Difference]: Without dead ends: 365 [2023-02-17 22:03:36,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12574 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=5964, Invalid=33042, Unknown=0, NotChecked=0, Total=39006 [2023-02-17 22:03:36,142 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 320 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:36,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 118 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-17 22:03:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-02-17 22:03:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 201. [2023-02-17 22:03:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.375) internal successors, (275), 200 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2023-02-17 22:03:36,185 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 30 [2023-02-17 22:03:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:36,185 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2023-02-17 22:03:36,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2023-02-17 22:03:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:03:36,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:36,187 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:36,193 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 (7)] Forceful destruction successful, exit code 0 [2023-02-17 22:03:36,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:36,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:36,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1894380496, now seen corresponding path program 2 times [2023-02-17 22:03:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:36,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573214527] [2023-02-17 22:03:36,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:03:36,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:36,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:36,403 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:36,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-17 22:03:36,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:03:36,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:03:36,448 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 22:03:36,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:36,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:39,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:39,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573214527] [2023-02-17 22:03:39,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573214527] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:39,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:03:39,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:03:39,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496949098] [2023-02-17 22:03:39,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:39,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:03:39,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:03:39,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:03:39,007 INFO L87 Difference]: Start difference. First operand 201 states and 275 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:03:54,024 INFO L93 Difference]: Finished difference Result 393 states and 512 transitions. [2023-02-17 22:03:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-17 22:03:54,024 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:03:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:03:54,026 INFO L225 Difference]: With dead ends: 393 [2023-02-17 22:03:54,026 INFO L226 Difference]: Without dead ends: 336 [2023-02-17 22:03:54,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12753 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=5431, Invalid=32789, Unknown=0, NotChecked=0, Total=38220 [2023-02-17 22:03:54,029 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 210 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 22:03:54,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 121 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-17 22:03:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-02-17 22:03:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 222. [2023-02-17 22:03:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.3619909502262444) internal successors, (301), 221 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2023-02-17 22:03:54,095 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 30 [2023-02-17 22:03:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:03:54,096 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2023-02-17 22:03:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:03:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2023-02-17 22:03:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:03:54,101 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:03:54,101 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:03:54,111 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 [2023-02-17 22:03:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:54,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:03:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:03:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1978693868, now seen corresponding path program 3 times [2023-02-17 22:03:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:03:54,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021851305] [2023-02-17 22:03:54,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 22:03:54,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:03:54,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:03:54,308 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:03:54,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-17 22:03:54,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 22:03:54,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:03:54,344 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 22:03:54,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:03:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:55,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:03:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:03:57,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:03:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021851305] [2023-02-17 22:03:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021851305] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:03:57,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:03:57,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:03:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213126029] [2023-02-17 22:03:57,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:03:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:03:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:03:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:03:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:03:57,722 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:04:10,542 INFO L93 Difference]: Finished difference Result 592 states and 762 transitions. [2023-02-17 22:04:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-17 22:04:10,543 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:04:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:04:10,545 INFO L225 Difference]: With dead ends: 592 [2023-02-17 22:04:10,545 INFO L226 Difference]: Without dead ends: 584 [2023-02-17 22:04:10,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5569 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=3261, Invalid=15371, Unknown=0, NotChecked=0, Total=18632 [2023-02-17 22:04:10,547 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 [2023-02-17 22:04:10,547 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] [2023-02-17 22:04:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-02-17 22:04:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 343. [2023-02-17 22:04:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3421052631578947) internal successors, (459), 342 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2023-02-17 22:04:10,651 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 30 [2023-02-17 22:04:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:04:10,651 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2023-02-17 22:04:10,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2023-02-17 22:04:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:04:10,652 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:04:10,653 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 22:04:10,660 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 [2023-02-17 22:04:10,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:04:10,867 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:04:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:04:10,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2035952170, now seen corresponding path program 4 times [2023-02-17 22:04:10,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:04:10,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32753484] [2023-02-17 22:04:10,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 22:04:10,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:04:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:04:10,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:04:10,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-17 22:04:10,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 22:04:10,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:04:10,906 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 22:04:10,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:04:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:04:11,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:04:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:04:13,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:04:13,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32753484] [2023-02-17 22:04:13,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32753484] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:04:13,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:04:13,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:04:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278334492] [2023-02-17 22:04:13,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:04:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:04:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:04:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:04:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:04:13,253 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:04:32,508 INFO L93 Difference]: Finished difference Result 681 states and 899 transitions. [2023-02-17 22:04:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-02-17 22:04:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:04:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:04:32,511 INFO L225 Difference]: With dead ends: 681 [2023-02-17 22:04:32,511 INFO L226 Difference]: Without dead ends: 637 [2023-02-17 22:04:32,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15488 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=6319, Invalid=40121, Unknown=0, NotChecked=0, Total=46440 [2023-02-17 22:04:32,513 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.8s IncrementalHoareTripleChecker+Time [2023-02-17 22:04:32,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 170 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-17 22:04:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-02-17 22:04:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 454. [2023-02-17 22:04:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.3642384105960266) internal successors, (618), 453 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 618 transitions. [2023-02-17 22:04:32,622 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 618 transitions. Word has length 30 [2023-02-17 22:04:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:04:32,622 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 618 transitions. [2023-02-17 22:04:32,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 618 transitions. [2023-02-17 22:04:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:04:32,623 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:04:32,623 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 22:04:32,633 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 (10)] Ended with exit code 0 [2023-02-17 22:04:32,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:04:32,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:04:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:04:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1636215058, now seen corresponding path program 5 times [2023-02-17 22:04:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:04:32,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766490906] [2023-02-17 22:04:32,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 22:04:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:04:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:04:32,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:04:32,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-17 22:04:32,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-17 22:04:32,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:04:32,867 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 22:04:32,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:04:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:04:33,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:04:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:04:35,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:04:35,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766490906] [2023-02-17 22:04:35,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766490906] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:04:35,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:04:35,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:04:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597005756] [2023-02-17 22:04:35,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:04:35,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:04:35,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:04:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:04:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:04:35,415 INFO L87 Difference]: Start difference. First operand 454 states and 618 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:04:48,774 INFO L93 Difference]: Finished difference Result 645 states and 869 transitions. [2023-02-17 22:04:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-02-17 22:04:48,775 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:04:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:04:48,780 INFO L225 Difference]: With dead ends: 645 [2023-02-17 22:04:48,780 INFO L226 Difference]: Without dead ends: 596 [2023-02-17 22:04:48,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=3942, Invalid=22790, Unknown=0, NotChecked=0, Total=26732 [2023-02-17 22:04:48,781 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 157 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:04:48,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 65 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-17 22:04:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-02-17 22:04:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 480. [2023-02-17 22:04:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 479 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 651 transitions. [2023-02-17 22:04:48,907 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 651 transitions. Word has length 30 [2023-02-17 22:04:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:04:48,907 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 651 transitions. [2023-02-17 22:04:48,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:04:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 651 transitions. [2023-02-17 22:04:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:04:48,918 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:04:48,919 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:04:48,925 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 (11)] Ended with exit code 0 [2023-02-17 22:04:49,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:04:49,123 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:04:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:04:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1578956756, now seen corresponding path program 6 times [2023-02-17 22:04:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:04:49,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474537275] [2023-02-17 22:04:49,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 22:04:49,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:04:49,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:04:49,126 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:04:49,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-17 22:04:49,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-17 22:04:49,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:04:49,192 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 22:04:49,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:04:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:04:49,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:04:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:04:52,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:04:52,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474537275] [2023-02-17 22:04:52,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474537275] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:04:52,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:04:52,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:04:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087580508] [2023-02-17 22:04:52,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:04:52,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:04:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:04:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:04:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2449, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:04:52,705 INFO L87 Difference]: Start difference. First operand 480 states and 651 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:05:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:05:42,289 INFO L93 Difference]: Finished difference Result 1004 states and 1335 transitions. [2023-02-17 22:05:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-17 22:05:42,290 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:05:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:05:42,300 INFO L225 Difference]: With dead ends: 1004 [2023-02-17 22:05:42,300 INFO L226 Difference]: Without dead ends: 990 [2023-02-17 22:05:42,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17936 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=7493, Invalid=46563, Unknown=0, NotChecked=0, Total=54056 [2023-02-17 22:05:42,304 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 328 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-02-17 22:05:42,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 315 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-02-17 22:05:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-02-17 22:05:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 802. [2023-02-17 22:05:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.373283395755306) internal successors, (1100), 801 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:05:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1100 transitions. [2023-02-17 22:05:42,581 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1100 transitions. Word has length 30 [2023-02-17 22:05:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:05:42,581 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1100 transitions. [2023-02-17 22:05:42,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:05:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1100 transitions. [2023-02-17 22:05:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:05:42,582 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:05:42,582 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 22:05:42,606 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 [2023-02-17 22:05:42,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:05:42,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:05:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:05:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash -497923054, now seen corresponding path program 7 times [2023-02-17 22:05:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:05:42,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630226482] [2023-02-17 22:05:42,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 22:05:42,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:05:42,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:05:42,791 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:05:42,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-17 22:05:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:05:42,825 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 22:05:42,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:05:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:05:43,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:05:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:05:45,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:05:45,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630226482] [2023-02-17 22:05:45,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630226482] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:05:45,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:05:45,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:05:45,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397796962] [2023-02-17 22:05:45,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:05:45,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:05:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:05:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:05:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2257, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:05:45,344 INFO L87 Difference]: Start difference. First operand 802 states and 1100 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:06:06,008 INFO L93 Difference]: Finished difference Result 1186 states and 1602 transitions. [2023-02-17 22:06:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2023-02-17 22:06:06,009 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:06:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:06:06,015 INFO L225 Difference]: With dead ends: 1186 [2023-02-17 22:06:06,015 INFO L226 Difference]: Without dead ends: 1138 [2023-02-17 22:06:06,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15913 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=6191, Invalid=41551, Unknown=0, NotChecked=0, Total=47742 [2023-02-17 22:06:06,017 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 214 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:06:06,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 145 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-17 22:06:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-02-17 22:06:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 930. [2023-02-17 22:06:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.3702906350914963) internal successors, (1273), 929 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1273 transitions. [2023-02-17 22:06:06,349 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1273 transitions. Word has length 30 [2023-02-17 22:06:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:06:06,349 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1273 transitions. [2023-02-17 22:06:06,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1273 transitions. [2023-02-17 22:06:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:06:06,350 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:06:06,350 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 22:06:06,356 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 (13)] Ended with exit code 0 [2023-02-17 22:06:06,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:06:06,557 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:06:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:06:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1120723122, now seen corresponding path program 8 times [2023-02-17 22:06:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:06:06,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757948247] [2023-02-17 22:06:06,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:06:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:06:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:06:06,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:06:06,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-17 22:06:06,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:06:06,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:06:06,584 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 22:06:06,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:06:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:06:07,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:06:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:06:09,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:06:09,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757948247] [2023-02-17 22:06:09,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757948247] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:06:09,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:06:09,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:06:09,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917875856] [2023-02-17 22:06:09,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:06:09,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:06:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:06:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:06:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2285, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:06:09,004 INFO L87 Difference]: Start difference. First operand 930 states and 1273 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:06:23,226 INFO L93 Difference]: Finished difference Result 1195 states and 1622 transitions. [2023-02-17 22:06:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-17 22:06:23,226 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:06:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:06:23,229 INFO L225 Difference]: With dead ends: 1195 [2023-02-17 22:06:23,229 INFO L226 Difference]: Without dead ends: 1131 [2023-02-17 22:06:23,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9482 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=4178, Invalid=26622, Unknown=0, NotChecked=0, Total=30800 [2023-02-17 22:06:23,231 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 185 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:06:23,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 151 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-17 22:06:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2023-02-17 22:06:23,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 978. [2023-02-17 22:06:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3674513817809621) internal successors, (1336), 977 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1336 transitions. [2023-02-17 22:06:23,607 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1336 transitions. Word has length 30 [2023-02-17 22:06:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:06:23,614 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1336 transitions. [2023-02-17 22:06:23,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1336 transitions. [2023-02-17 22:06:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:06:23,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:06:23,615 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:06:23,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-17 22:06:23,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:06:23,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:06:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:06:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1378888560, now seen corresponding path program 9 times [2023-02-17 22:06:23,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:06:23,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081216343] [2023-02-17 22:06:23,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 22:06:23,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:06:23,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:06:23,818 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:06:23,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-17 22:06:23,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 22:06:23,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:06:23,846 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-17 22:06:23,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:06:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:06:24,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:06:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:06:28,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:06:28,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081216343] [2023-02-17 22:06:28,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081216343] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:06:28,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:06:28,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:06:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949771762] [2023-02-17 22:06:28,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:06:28,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:06:28,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:06:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:06:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:06:28,114 INFO L87 Difference]: Start difference. First operand 978 states and 1336 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:54,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:06:54,235 INFO L93 Difference]: Finished difference Result 1617 states and 2170 transitions. [2023-02-17 22:06:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-17 22:06:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:06:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:06:54,240 INFO L225 Difference]: With dead ends: 1617 [2023-02-17 22:06:54,240 INFO L226 Difference]: Without dead ends: 1609 [2023-02-17 22:06:54,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10785 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=5368, Invalid=27574, Unknown=0, NotChecked=0, Total=32942 [2023-02-17 22:06:54,241 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, 3.9s IncrementalHoareTripleChecker+Time [2023-02-17 22:06:54,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 149 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-02-17 22:06:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-02-17 22:06:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1317. [2023-02-17 22:06:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.3761398176291793) internal successors, (1811), 1316 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1811 transitions. [2023-02-17 22:06:54,733 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1811 transitions. Word has length 30 [2023-02-17 22:06:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:06:54,733 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1811 transitions. [2023-02-17 22:06:54,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:06:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1811 transitions. [2023-02-17 22:06:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:06:54,734 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:06:54,734 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 22:06:54,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-17 22:06:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:06:54,941 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:06:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:06:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1436146862, now seen corresponding path program 10 times [2023-02-17 22:06:54,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:06:54,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105841222] [2023-02-17 22:06:54,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 22:06:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:06:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:06:54,944 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:06:54,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-17 22:06:54,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 22:06:54,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:06:54,969 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-17 22:06:54,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:06:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:06:55,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:06:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:06:58,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:06:58,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105841222] [2023-02-17 22:06:58,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105841222] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:06:58,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:06:58,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:06:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590266340] [2023-02-17 22:06:58,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:06:58,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:06:58,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:06:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:06:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2263, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:06:58,470 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) [2023-02-17 22:07:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:07:30,582 INFO L93 Difference]: Finished difference Result 1636 states and 2237 transitions. [2023-02-17 22:07:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-02-17 22:07:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:07:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:07:30,586 INFO L225 Difference]: With dead ends: 1636 [2023-02-17 22:07:30,586 INFO L226 Difference]: Without dead ends: 1590 [2023-02-17 22:07:30,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=4669, Invalid=27193, Unknown=0, NotChecked=0, Total=31862 [2023-02-17 22:07:30,589 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 176 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s 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, 5.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:07:30,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 164 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-02-17 22:07:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2023-02-17 22:07:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1424. [2023-02-17 22:07:31,136 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) [2023-02-17 22:07:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1969 transitions. [2023-02-17 22:07:31,138 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1969 transitions. Word has length 30 [2023-02-17 22:07:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:07:31,139 INFO L495 AbstractCegarLoop]: Abstraction has 1424 states and 1969 transitions. [2023-02-17 22:07:31,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:07:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1969 transitions. [2023-02-17 22:07:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:07:31,140 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:07:31,140 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 22:07:31,146 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 [2023-02-17 22:07:31,346 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 [2023-02-17 22:07:31,347 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:07:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:07:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash 216357974, now seen corresponding path program 11 times [2023-02-17 22:07:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:07:31,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362109333] [2023-02-17 22:07:31,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 22:07:31,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:07:31,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:07:31,349 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) [2023-02-17 22:07:31,351 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 [2023-02-17 22:07:31,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-17 22:07:31,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:07:31,380 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 22:07:31,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:07:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:07:31,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:07:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:07:33,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:07:33,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362109333] [2023-02-17 22:07:33,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362109333] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:07:33,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:07:33,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:07:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112151603] [2023-02-17 22:07:33,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:07:33,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:07:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:07:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:07:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2258, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:07:33,920 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) [2023-02-17 22:07:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:07:55,202 INFO L93 Difference]: Finished difference Result 1793 states and 2474 transitions. [2023-02-17 22:07:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2023-02-17 22:07:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:07:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:07:55,207 INFO L225 Difference]: With dead ends: 1793 [2023-02-17 22:07:55,207 INFO L226 Difference]: Without dead ends: 1751 [2023-02-17 22:07:55,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13916 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=5348, Invalid=37294, Unknown=0, NotChecked=0, Total=42642 [2023-02-17 22:07:55,210 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 145 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 2.9s IncrementalHoareTripleChecker+Time [2023-02-17 22:07:55,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 83 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-02-17 22:07:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2023-02-17 22:07:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1530. [2023-02-17 22:07:55,864 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) [2023-02-17 22:07:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2113 transitions. [2023-02-17 22:07:55,867 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2113 transitions. Word has length 30 [2023-02-17 22:07:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:07:55,867 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 2113 transitions. [2023-02-17 22:07:55,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:07:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2113 transitions. [2023-02-17 22:07:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:07:55,868 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:07:55,868 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 22:07:55,877 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 [2023-02-17 22:07:56,075 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 [2023-02-17 22:07:56,076 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:07:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:07:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash -406442094, now seen corresponding path program 12 times [2023-02-17 22:07:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:07:56,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705421109] [2023-02-17 22:07:56,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 22:07:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:07:56,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:07:56,085 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) [2023-02-17 22:07:56,087 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 [2023-02-17 22:07:56,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-17 22:07:56,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:07:56,112 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-17 22:07:56,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:07:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:07:56,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:07:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:07:59,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:07:59,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705421109] [2023-02-17 22:07:59,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705421109] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:07:59,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:07:59,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:07:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044050211] [2023-02-17 22:07:59,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:07:59,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:07:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:07:59,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:07:59,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2416, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:07:59,349 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) [2023-02-17 22:08:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:08:29,589 INFO L93 Difference]: Finished difference Result 1940 states and 2657 transitions. [2023-02-17 22:08:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-02-17 22:08:29,590 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:08:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:08:29,594 INFO L225 Difference]: With dead ends: 1940 [2023-02-17 22:08:29,594 INFO L226 Difference]: Without dead ends: 1930 [2023-02-17 22:08:29,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11058 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=5275, Invalid=30257, Unknown=0, NotChecked=0, Total=35532 [2023-02-17 22:08:29,595 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 219 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-02-17 22:08:29,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 123 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-02-17 22:08:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2023-02-17 22:08:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1794. [2023-02-17 22:08:30,307 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) [2023-02-17 22:08:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2482 transitions. [2023-02-17 22:08:30,309 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2482 transitions. Word has length 30 [2023-02-17 22:08:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:08:30,310 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2482 transitions. [2023-02-17 22:08:30,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:08:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2482 transitions. [2023-02-17 22:08:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:08:30,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:08:30,311 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:08:30,317 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 (18)] Ended with exit code 0 [2023-02-17 22:08:30,517 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 [2023-02-17 22:08:30,517 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:08:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:08:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -463700396, now seen corresponding path program 13 times [2023-02-17 22:08:30,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:08:30,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096916873] [2023-02-17 22:08:30,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 22:08:30,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:08:30,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:08:30,522 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) [2023-02-17 22:08:30,524 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 [2023-02-17 22:08:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:08:30,547 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 22:08:30,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:08:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:08:31,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:08:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:08:33,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:08:33,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096916873] [2023-02-17 22:08:33,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096916873] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:08:33,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:08:33,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:08:33,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846872749] [2023-02-17 22:08:33,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:08:33,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:08:33,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:08:33,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:08:33,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2258, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:08:33,195 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) [2023-02-17 22:08:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:08:57,256 INFO L93 Difference]: Finished difference Result 2168 states and 2976 transitions. [2023-02-17 22:08:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-02-17 22:08:57,256 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:08:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:08:57,261 INFO L225 Difference]: With dead ends: 2168 [2023-02-17 22:08:57,261 INFO L226 Difference]: Without dead ends: 2100 [2023-02-17 22:08:57,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13384 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=5263, Invalid=36149, Unknown=0, NotChecked=0, Total=41412 [2023-02-17 22:08:57,263 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 195 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.5s IncrementalHoareTripleChecker+Time [2023-02-17 22:08:57,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 189 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-02-17 22:08:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2023-02-17 22:08:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1909. [2023-02-17 22:08:58,008 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) [2023-02-17 22:08:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2639 transitions. [2023-02-17 22:08:58,010 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2639 transitions. Word has length 30 [2023-02-17 22:08:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:08:58,010 INFO L495 AbstractCegarLoop]: Abstraction has 1909 states and 2639 transitions. [2023-02-17 22:08:58,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:08:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2639 transitions. [2023-02-17 22:08:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:08:58,011 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:08:58,011 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:08:58,021 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 [2023-02-17 22:08:58,218 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 [2023-02-17 22:08:58,218 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:08:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:08:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash -41807464, now seen corresponding path program 14 times [2023-02-17 22:08:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:08:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781297693] [2023-02-17 22:08:58,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:08:58,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:08:58,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:08:58,221 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) [2023-02-17 22:08:58,222 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 [2023-02-17 22:08:58,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:08:58,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:08:58,247 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 22:08:58,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:08:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:08:58,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:09:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:09:00,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:09:00,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781297693] [2023-02-17 22:09:00,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781297693] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:09:00,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:09:00,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:09:00,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577943972] [2023-02-17 22:09:00,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:09:00,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:09:00,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:09:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:09:00,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2260, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:09:00,768 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) [2023-02-17 22:09:23,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:09:23,384 INFO L93 Difference]: Finished difference Result 2173 states and 2983 transitions. [2023-02-17 22:09:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-02-17 22:09:23,387 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:09:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:09:23,391 INFO L225 Difference]: With dead ends: 2173 [2023-02-17 22:09:23,392 INFO L226 Difference]: Without dead ends: 2126 [2023-02-17 22:09:23,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11849 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=5291, Invalid=32539, Unknown=0, NotChecked=0, Total=37830 [2023-02-17 22:09:23,393 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 204 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-02-17 22:09:23,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 113 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-17 22:09:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2023-02-17 22:09:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1952. [2023-02-17 22:09:24,214 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) [2023-02-17 22:09:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2697 transitions. [2023-02-17 22:09:24,216 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2697 transitions. Word has length 30 [2023-02-17 22:09:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:09:24,216 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2697 transitions. [2023-02-17 22:09:24,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:09:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2697 transitions. [2023-02-17 22:09:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:09:24,217 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:09:24,217 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 22:09:24,227 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 (20)] Forceful destruction successful, exit code 0 [2023-02-17 22:09:24,424 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 [2023-02-17 22:09:24,424 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:09:24,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:09:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash -721865834, now seen corresponding path program 15 times [2023-02-17 22:09:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:09:24,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861917752] [2023-02-17 22:09:24,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 22:09:24,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:09:24,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:09:24,428 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) [2023-02-17 22:09:24,429 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 [2023-02-17 22:09:24,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 22:09:24,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:09:24,463 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-17 22:09:24,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:09:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:09:25,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:09:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:09:29,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:09:29,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861917752] [2023-02-17 22:09:29,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861917752] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:09:29,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:09:29,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:09:29,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506606502] [2023-02-17 22:09:29,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:09:29,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:09:29,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:09:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:09:29,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:09:29,346 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) [2023-02-17 22:10:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:10:15,674 INFO L93 Difference]: Finished difference Result 2786 states and 3792 transitions. [2023-02-17 22:10:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-02-17 22:10:15,676 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:10:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:10:15,682 INFO L225 Difference]: With dead ends: 2786 [2023-02-17 22:10:15,682 INFO L226 Difference]: Without dead ends: 2720 [2023-02-17 22:10:15,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13807 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=6221, Invalid=36009, Unknown=0, NotChecked=0, Total=42230 [2023-02-17 22:10:15,684 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 296 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 6.2s IncrementalHoareTripleChecker+Time [2023-02-17 22:10:15,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 180 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-02-17 22:10:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2023-02-17 22:10:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2382. [2023-02-17 22:10:16,767 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) [2023-02-17 22:10:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3294 transitions. [2023-02-17 22:10:16,770 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3294 transitions. Word has length 30 [2023-02-17 22:10:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:10:16,770 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3294 transitions. [2023-02-17 22:10:16,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:10:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3294 transitions. [2023-02-17 22:10:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:10:16,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:10:16,771 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 22:10:16,778 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 [2023-02-17 22:10:16,977 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 [2023-02-17 22:10:16,978 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:10:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:10:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1553479954, now seen corresponding path program 16 times [2023-02-17 22:10:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:10:16,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358852088] [2023-02-17 22:10:16,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 22:10:16,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:10:16,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:10:16,980 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) [2023-02-17 22:10:16,982 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 [2023-02-17 22:10:17,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 22:10:17,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:10:17,004 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 22:10:17,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:10:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:10:17,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:10:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:10:19,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:10:19,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358852088] [2023-02-17 22:10:19,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358852088] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:10:19,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:10:19,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:10:19,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106389238] [2023-02-17 22:10:19,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:10:19,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:10:19,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:10:19,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:10:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2305, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:10:19,387 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) [2023-02-17 22:10:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:10:33,181 INFO L93 Difference]: Finished difference Result 2585 states and 3564 transitions. [2023-02-17 22:10:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-02-17 22:10:33,182 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:10:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:10:33,187 INFO L225 Difference]: With dead ends: 2585 [2023-02-17 22:10:33,187 INFO L226 Difference]: Without dead ends: 2535 [2023-02-17 22:10:33,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7613 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=3344, Invalid=22416, Unknown=0, NotChecked=0, Total=25760 [2023-02-17 22:10:33,189 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 191 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.4s IncrementalHoareTripleChecker+Time [2023-02-17 22:10:33,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 115 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-02-17 22:10:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2023-02-17 22:10:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2397. [2023-02-17 22:10:34,255 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) [2023-02-17 22:10:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3310 transitions. [2023-02-17 22:10:34,258 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3310 transitions. Word has length 30 [2023-02-17 22:10:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:10:34,259 INFO L495 AbstractCegarLoop]: Abstraction has 2397 states and 3310 transitions. [2023-02-17 22:10:34,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:10:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3310 transitions. [2023-02-17 22:10:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:10:34,263 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:10:34,263 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 22:10:34,285 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 [2023-02-17 22:10:34,470 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 [2023-02-17 22:10:34,470 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:10:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:10:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash 816163282, now seen corresponding path program 17 times [2023-02-17 22:10:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:10:34,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171142992] [2023-02-17 22:10:34,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 22:10:34,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:10:34,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:10:34,473 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) [2023-02-17 22:10:34,475 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 [2023-02-17 22:10:34,499 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-17 22:10:34,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:10:34,500 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-17 22:10:34,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:10:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:10:35,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:10:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:10:38,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:10:38,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171142992] [2023-02-17 22:10:38,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171142992] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:10:38,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:10:38,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:10:38,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816904165] [2023-02-17 22:10:38,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:10:38,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:10:38,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:10:38,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:10:38,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2264, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:10:38,408 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) [2023-02-17 22:11:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:11:09,784 INFO L93 Difference]: Finished difference Result 2598 states and 3576 transitions. [2023-02-17 22:11:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-02-17 22:11:09,785 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:11:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:11:09,791 INFO L225 Difference]: With dead ends: 2598 [2023-02-17 22:11:09,791 INFO L226 Difference]: Without dead ends: 2545 [2023-02-17 22:11:09,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7783 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=3687, Invalid=23703, Unknown=0, NotChecked=0, Total=27390 [2023-02-17 22:11:09,793 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 136 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.5s IncrementalHoareTripleChecker+Time [2023-02-17 22:11:09,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 126 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-02-17 22:11:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2023-02-17 22:11:10,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2408. [2023-02-17 22:11:10,867 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) [2023-02-17 22:11:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3324 transitions. [2023-02-17 22:11:10,870 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3324 transitions. Word has length 30 [2023-02-17 22:11:10,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:11:10,870 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3324 transitions. [2023-02-17 22:11:10,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:11:10,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3324 transitions. [2023-02-17 22:11:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:11:10,871 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:11:10,871 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 22:11:10,878 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 [2023-02-17 22:11:11,077 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 [2023-02-17 22:11:11,078 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:11:11,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:11:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1238056214, now seen corresponding path program 18 times [2023-02-17 22:11:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:11:11,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783120835] [2023-02-17 22:11:11,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 22:11:11,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:11:11,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:11:11,080 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) [2023-02-17 22:11:11,082 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 [2023-02-17 22:11:11,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-17 22:11:11,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:11:11,115 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 22:11:11,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:11:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:11:11,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:11:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:11:14,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:11:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783120835] [2023-02-17 22:11:14,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783120835] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:11:14,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:11:14,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:11:14,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500456652] [2023-02-17 22:11:14,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:11:14,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:11:14,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:11:14,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:11:14,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=2440, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:11:14,944 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) [2023-02-17 22:12:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:12:21,825 INFO L93 Difference]: Finished difference Result 3007 states and 4134 transitions. [2023-02-17 22:12:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-02-17 22:12:21,828 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:12:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:12:21,836 INFO L225 Difference]: With dead ends: 3007 [2023-02-17 22:12:21,836 INFO L226 Difference]: Without dead ends: 2997 [2023-02-17 22:12:21,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17290 ImplicationChecksByTransitivity, 58.7s TimeCoverageRelationStatistics Valid=7617, Invalid=43685, Unknown=0, NotChecked=0, Total=51302 [2023-02-17 22:12:21,840 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 259 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s 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, 10.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:12:21,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 178 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-02-17 22:12:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2023-02-17 22:12:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2850. [2023-02-17 22:12:23,252 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) [2023-02-17 22:12:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3940 transitions. [2023-02-17 22:12:23,269 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3940 transitions. Word has length 30 [2023-02-17 22:12:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:12:23,269 INFO L495 AbstractCegarLoop]: Abstraction has 2850 states and 3940 transitions. [2023-02-17 22:12:23,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:12:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3940 transitions. [2023-02-17 22:12:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:12:23,270 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:12:23,271 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:12:23,286 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 [2023-02-17 22:12:23,477 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 [2023-02-17 22:12:23,477 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:12:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:12:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash 557997844, now seen corresponding path program 19 times [2023-02-17 22:12:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:12:23,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974076276] [2023-02-17 22:12:23,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 22:12:23,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:12:23,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:12:23,479 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) [2023-02-17 22:12:23,480 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 [2023-02-17 22:12:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:12:23,522 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-17 22:12:23,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:12:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:12:24,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:12:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:12:28,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:12:28,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974076276] [2023-02-17 22:12:28,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974076276] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:12:28,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:12:28,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:12:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904778631] [2023-02-17 22:12:28,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:12:28,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:12:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:12:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:12:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2270, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:12:28,527 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) [2023-02-17 22:13:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:13:21,126 INFO L93 Difference]: Finished difference Result 3214 states and 4446 transitions. [2023-02-17 22:13:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-02-17 22:13:21,127 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:13:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:13:21,131 INFO L225 Difference]: With dead ends: 3214 [2023-02-17 22:13:21,131 INFO L226 Difference]: Without dead ends: 3124 [2023-02-17 22:13:21,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7931 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=4187, Invalid=23535, Unknown=0, NotChecked=0, Total=27722 [2023-02-17 22:13:21,133 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 163 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s 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, 7.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:13:21,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 112 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-02-17 22:13:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2023-02-17 22:13:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2939. [2023-02-17 22:13:22,530 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) [2023-02-17 22:13:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 4068 transitions. [2023-02-17 22:13:22,534 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 4068 transitions. Word has length 30 [2023-02-17 22:13:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:13:22,534 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 4068 transitions. [2023-02-17 22:13:22,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:13:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 4068 transitions. [2023-02-17 22:13:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:13:22,535 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:13:22,535 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:13:22,542 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 [2023-02-17 22:13:22,742 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 [2023-02-17 22:13:22,742 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:13:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:13:22,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2143230256, now seen corresponding path program 20 times [2023-02-17 22:13:22,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:13:22,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353374419] [2023-02-17 22:13:22,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:13:22,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:13:22,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:13:22,744 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) [2023-02-17 22:13:22,746 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 [2023-02-17 22:13:22,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:13:22,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:13:22,771 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 22:13:22,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:13:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:13:23,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:13:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:13:25,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:13:25,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353374419] [2023-02-17 22:13:25,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353374419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:13:25,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:13:25,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:13:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459028756] [2023-02-17 22:13:25,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:13:25,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:13:25,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:13:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:13:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:13:25,236 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) [2023-02-17 22:13:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:13:34,429 INFO L93 Difference]: Finished difference Result 3118 states and 4300 transitions. [2023-02-17 22:13:34,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-02-17 22:13:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:13:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:13:34,433 INFO L225 Difference]: With dead ends: 3118 [2023-02-17 22:13:34,433 INFO L226 Difference]: Without dead ends: 3072 [2023-02-17 22:13:34,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4100 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2389, Invalid=13613, Unknown=0, NotChecked=0, Total=16002 [2023-02-17 22:13:34,434 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 133 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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 [2023-02-17 22:13:34,434 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] [2023-02-17 22:13:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2023-02-17 22:13:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2969. [2023-02-17 22:13:35,886 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) [2023-02-17 22:13:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4099 transitions. [2023-02-17 22:13:35,889 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4099 transitions. Word has length 30 [2023-02-17 22:13:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:13:35,890 INFO L495 AbstractCegarLoop]: Abstraction has 2969 states and 4099 transitions. [2023-02-17 22:13:35,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:13:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4099 transitions. [2023-02-17 22:13:35,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:13:35,917 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:13:35,917 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:13:35,925 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 [2023-02-17 22:13:36,125 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 [2023-02-17 22:13:36,125 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:13:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:13:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1414420368, now seen corresponding path program 21 times [2023-02-17 22:13:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:13:36,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665654175] [2023-02-17 22:13:36,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 22:13:36,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:13:36,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:13:36,128 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) [2023-02-17 22:13:36,131 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 [2023-02-17 22:13:36,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 22:13:36,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:13:36,166 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-17 22:13:36,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:13:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 18 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:13:37,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:13:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:13:40,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:13:40,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665654175] [2023-02-17 22:13:40,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665654175] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:13:40,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:13:40,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:13:40,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483697858] [2023-02-17 22:13:40,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:13:40,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:13:40,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:13:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:13:40,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=2411, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:13:40,142 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) [2023-02-17 22:14:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:14:32,598 INFO L93 Difference]: Finished difference Result 3315 states and 4557 transitions. [2023-02-17 22:14:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-02-17 22:14:32,600 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:14:32,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:14:32,604 INFO L225 Difference]: With dead ends: 3315 [2023-02-17 22:14:32,604 INFO L226 Difference]: Without dead ends: 3299 [2023-02-17 22:14:32,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15925 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=7199, Invalid=37957, Unknown=0, NotChecked=0, Total=45156 [2023-02-17 22:14:32,606 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 298 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s 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, 7.3s IncrementalHoareTripleChecker+Time [2023-02-17 22:14:32,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 70 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-02-17 22:14:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2023-02-17 22:14:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3134. [2023-02-17 22:14:34,157 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) [2023-02-17 22:14:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 4322 transitions. [2023-02-17 22:14:34,160 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 4322 transitions. Word has length 30 [2023-02-17 22:14:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:14:34,160 INFO L495 AbstractCegarLoop]: Abstraction has 3134 states and 4322 transitions. [2023-02-17 22:14:34,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:14:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 4322 transitions. [2023-02-17 22:14:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:14:34,161 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:14:34,161 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:14:34,169 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 [2023-02-17 22:14:34,368 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 [2023-02-17 22:14:34,369 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:14:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:14:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1836313300, now seen corresponding path program 22 times [2023-02-17 22:14:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:14:34,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574183360] [2023-02-17 22:14:34,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 22:14:34,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:14:34,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:14:34,371 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) [2023-02-17 22:14:34,372 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 [2023-02-17 22:14:34,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 22:14:34,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:14:34,402 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 22:14:34,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:14:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:14:34,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:14:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:14:37,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:14:37,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574183360] [2023-02-17 22:14:37,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574183360] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:14:37,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:14:37,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:14:37,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851981758] [2023-02-17 22:14:37,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:14:37,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:14:37,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:14:37,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:14:37,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:14:37,657 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) [2023-02-17 22:15:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:15:02,856 INFO L93 Difference]: Finished difference Result 3443 states and 4726 transitions. [2023-02-17 22:15:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-02-17 22:15:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:15:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:15:02,862 INFO L225 Difference]: With dead ends: 3443 [2023-02-17 22:15:02,862 INFO L226 Difference]: Without dead ends: 3400 [2023-02-17 22:15:02,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12440 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=5156, Invalid=33850, Unknown=0, NotChecked=0, Total=39006 [2023-02-17 22:15:02,865 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 [2023-02-17 22:15:02,866 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] [2023-02-17 22:15:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2023-02-17 22:15:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3240. [2023-02-17 22:15:04,513 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) [2023-02-17 22:15:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4471 transitions. [2023-02-17 22:15:04,517 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4471 transitions. Word has length 30 [2023-02-17 22:15:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:15:04,517 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 4471 transitions. [2023-02-17 22:15:04,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:15:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4471 transitions. [2023-02-17 22:15:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:15:04,518 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:15:04,518 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:15:04,526 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 [2023-02-17 22:15:04,725 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 [2023-02-17 22:15:04,725 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:15:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:15:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1213513232, now seen corresponding path program 23 times [2023-02-17 22:15:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:15:04,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601163348] [2023-02-17 22:15:04,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 22:15:04,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:15:04,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:15:04,727 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) [2023-02-17 22:15:04,729 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 [2023-02-17 22:15:04,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-17 22:15:04,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:15:04,754 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-17 22:15:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:15:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:15:05,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:15:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:15:08,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:15:08,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601163348] [2023-02-17 22:15:08,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601163348] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:15:08,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:15:08,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:15:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483606112] [2023-02-17 22:15:08,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:15:08,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:15:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:15:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:15:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=2261, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:15:08,074 INFO L87 Difference]: Start difference. First operand 3240 states and 4471 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:15:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:15:30,774 INFO L93 Difference]: Finished difference Result 3494 states and 4810 transitions. [2023-02-17 22:15:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-02-17 22:15:30,776 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:15:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:15:30,781 INFO L225 Difference]: With dead ends: 3494 [2023-02-17 22:15:30,781 INFO L226 Difference]: Without dead ends: 3433 [2023-02-17 22:15:30,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8426 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=3890, Invalid=25180, Unknown=0, NotChecked=0, Total=29070 [2023-02-17 22:15:30,782 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 166 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-17 22:15:30,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 68 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-02-17 22:15:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2023-02-17 22:15:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 3293. [2023-02-17 22:15:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3292 states have (on average 1.3800121506682868) internal successors, (4543), 3292 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:15:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 4543 transitions. [2023-02-17 22:15:32,457 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 4543 transitions. Word has length 30 [2023-02-17 22:15:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:15:32,457 INFO L495 AbstractCegarLoop]: Abstraction has 3293 states and 4543 transitions. [2023-02-17 22:15:32,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:15:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 4543 transitions. [2023-02-17 22:15:32,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:15:32,460 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:15:32,462 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 22:15:32,469 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 [2023-02-17 22:15:32,665 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 [2023-02-17 22:15:32,666 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:15:32,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:15:32,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1156254930, now seen corresponding path program 24 times [2023-02-17 22:15:32,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:15:32,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879975313] [2023-02-17 22:15:32,667 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 22:15:32,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:15:32,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:15:32,668 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) [2023-02-17 22:15:32,670 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 [2023-02-17 22:15:32,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-17 22:15:32,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:15:32,705 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 22:15:32,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:15:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:15:33,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:15:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:15:36,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:15:36,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879975313] [2023-02-17 22:15:36,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879975313] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:15:36,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:15:36,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 22:15:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729485782] [2023-02-17 22:15:36,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:15:36,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 22:15:36,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:15:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 22:15:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2456, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 22:15:36,515 INFO L87 Difference]: Start difference. First operand 3293 states and 4543 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:16:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:16:46,261 INFO L93 Difference]: Finished difference Result 3832 states and 5258 transitions. [2023-02-17 22:16:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-02-17 22:16:46,263 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:16:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:16:46,269 INFO L225 Difference]: With dead ends: 3832 [2023-02-17 22:16:46,269 INFO L226 Difference]: Without dead ends: 3820 [2023-02-17 22:16:46,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18650 ImplicationChecksByTransitivity, 60.4s TimeCoverageRelationStatistics Valid=7709, Invalid=49173, Unknown=0, NotChecked=0, Total=56882 [2023-02-17 22:16:46,272 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 321 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-02-17 22:16:46,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 280 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-02-17 22:16:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2023-02-17 22:16:48,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3523. [2023-02-17 22:16:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3523 states, 3522 states have (on average 1.380465644520159) internal successors, (4862), 3522 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:16:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3523 states to 3523 states and 4862 transitions. [2023-02-17 22:16:48,110 INFO L78 Accepts]: Start accepts. Automaton has 3523 states and 4862 transitions. Word has length 30 [2023-02-17 22:16:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:16:48,110 INFO L495 AbstractCegarLoop]: Abstraction has 3523 states and 4862 transitions. [2023-02-17 22:16:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:16:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3523 states and 4862 transitions. [2023-02-17 22:16:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:16:48,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:16:48,111 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:16:48,118 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 (30)] Forceful destruction successful, exit code 0 [2023-02-17 22:16:48,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:16:48,313 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:16:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:16:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -920624880, now seen corresponding path program 25 times [2023-02-17 22:16:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:16:48,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461560742] [2023-02-17 22:16:48,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 22:16:48,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:16:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:16:48,315 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:16:48,316 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 (31)] Waiting until timeout for monitored process [2023-02-17 22:16:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:16:48,343 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 22:16:48,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:16:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:16:48,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:16:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:16:51,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:16:51,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461560742] [2023-02-17 22:16:51,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461560742] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:16:51,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:16:51,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:16:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483566652] [2023-02-17 22:16:51,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:16:51,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:16:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:16:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:16:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2260, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:16:51,119 INFO L87 Difference]: Start difference. First operand 3523 states and 4862 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:17:16,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:17:16,062 INFO L93 Difference]: Finished difference Result 3841 states and 5284 transitions. [2023-02-17 22:17:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2023-02-17 22:17:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 22:17:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:17:16,070 INFO L225 Difference]: With dead ends: 3841 [2023-02-17 22:17:16,070 INFO L226 Difference]: Without dead ends: 3798 [2023-02-17 22:17:16,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10660 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=4846, Invalid=30310, Unknown=0, NotChecked=0, Total=35156 [2023-02-17 22:17:16,072 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 217 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-02-17 22:17:16,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 144 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-02-17 22:17:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2023-02-17 22:17:18,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3613. [2023-02-17 22:17:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.3803986710963456) internal successors, (4986), 3612 states have internal predecessors, (4986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:17:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4986 transitions. [2023-02-17 22:17:18,062 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4986 transitions. Word has length 30 [2023-02-17 22:17:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:17:18,063 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 4986 transitions. [2023-02-17 22:17:18,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:17:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4986 transitions. [2023-02-17 22:17:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 22:17:18,064 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:17:18,064 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 22:17:18,070 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 (31)] Ended with exit code 0 [2023-02-17 22:17:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:17:18,271 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:17:18,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:17:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1543424948, now seen corresponding path program 26 times [2023-02-17 22:17:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 22:17:18,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685604994] [2023-02-17 22:17:18,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:17:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 22:17:18,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 22:17:18,273 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 22:17:18,273 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 (32)] Waiting until timeout for monitored process [2023-02-17 22:17:18,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:17:18,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:17:18,297 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 22:17:18,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:17:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:17:18,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:17:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:17:21,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 22:17:21,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685604994] [2023-02-17 22:17:21,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685604994] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:17:21,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 22:17:21,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 22:17:21,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149409671] [2023-02-17 22:17:21,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 22:17:21,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 22:17:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 22:17:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 22:17:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2289, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 22:17:21,366 INFO L87 Difference]: Start difference. First operand 3613 states and 4986 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)