./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.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/nla-digbench-scaling/egcd2-ll_valuebound50.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 fc71ae13b1bed24e074eb2de07c8f2064aa903343708c3aabf1b928078c9e7f6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 02:00:18,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 02:00:18,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 02:00:18,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 02:00:18,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 02:00:18,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 02:00:18,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 02:00:18,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 02:00:18,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 02:00:18,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 02:00:18,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 02:00:18,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 02:00:18,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 02:00:18,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 02:00:18,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 02:00:18,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 02:00:18,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 02:00:18,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 02:00:18,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 02:00:18,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 02:00:18,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 02:00:18,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 02:00:18,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 02:00:18,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 02:00:18,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 02:00:18,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 02:00:18,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 02:00:18,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 02:00:18,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 02:00:18,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 02:00:18,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 02:00:18,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 02:00:18,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 02:00:18,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 02:00:18,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 02:00:18,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 02:00:18,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 02:00:18,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 02:00:18,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 02:00:18,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 02:00:18,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 02:00:18,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 02:00:18,322 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 02:00:18,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 02:00:18,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 02:00:18,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 02:00:18,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 02:00:18,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 02:00:18,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 02:00:18,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 02:00:18,325 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 02:00:18,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 02:00:18,326 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 02:00:18,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 02:00:18,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 02:00:18,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 02:00:18,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 02:00:18,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 02:00:18,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 02:00:18,327 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 02:00:18,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 02:00:18,328 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 02:00:18,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 02:00:18,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 02:00:18,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 02:00:18,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 02:00:18,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 02:00:18,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 02:00:18,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 02:00:18,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 02:00:18,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 02:00:18,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 02:00:18,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 02:00:18,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 02:00:18,331 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 02:00:18,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 02:00:18,331 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 02:00:18,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc71ae13b1bed24e074eb2de07c8f2064aa903343708c3aabf1b928078c9e7f6 [2023-02-18 02:00:18,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 02:00:18,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 02:00:18,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 02:00:18,600 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 02:00:18,601 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 02:00:18,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2023-02-18 02:00:19,693 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 02:00:19,895 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 02:00:19,895 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2023-02-18 02:00:19,901 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ba85971/bc797160a2d142778c0050fa23655612/FLAGe0b91ec99 [2023-02-18 02:00:19,916 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ba85971/bc797160a2d142778c0050fa23655612 [2023-02-18 02:00:19,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 02:00:19,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 02:00:19,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 02:00:19,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 02:00:19,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 02:00:19,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:00:19" (1/1) ... [2023-02-18 02:00:19,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a75fbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:19, skipping insertion in model container [2023-02-18 02:00:19,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:00:19" (1/1) ... [2023-02-18 02:00:19,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 02:00:19,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 02:00:20,059 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/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2023-02-18 02:00:20,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 02:00:20,083 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 02:00:20,090 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/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2023-02-18 02:00:20,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 02:00:20,108 INFO L208 MainTranslator]: Completed translation [2023-02-18 02:00:20,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20 WrapperNode [2023-02-18 02:00:20,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 02:00:20,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 02:00:20,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 02:00:20,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 02:00:20,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,133 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2023-02-18 02:00:20,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 02:00:20,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 02:00:20,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 02:00:20,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 02:00:20,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 02:00:20,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 02:00:20,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 02:00:20,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 02:00:20,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (1/1) ... [2023-02-18 02:00:20,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 02:00:20,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:20,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 02:00:20,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 02:00:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 02:00:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 02:00:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 02:00:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 02:00:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 02:00:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 02:00:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 02:00:20,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 02:00:20,276 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 02:00:20,278 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 02:00:20,415 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 02:00:20,422 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 02:00:20,422 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 02:00:20,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:00:20 BoogieIcfgContainer [2023-02-18 02:00:20,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 02:00:20,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 02:00:20,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 02:00:20,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 02:00:20,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:00:19" (1/3) ... [2023-02-18 02:00:20,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43231833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:00:20, skipping insertion in model container [2023-02-18 02:00:20,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:00:20" (2/3) ... [2023-02-18 02:00:20,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43231833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:00:20, skipping insertion in model container [2023-02-18 02:00:20,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:00:20" (3/3) ... [2023-02-18 02:00:20,458 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound50.c [2023-02-18 02:00:20,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 02:00:20,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 02:00:20,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 02:00:20,518 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;@1c38bfaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 02:00:20,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 02:00:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 02:00:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 02:00:20,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:20,528 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:20,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2023-02-18 02:00:20,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:20,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954053994] [2023-02-18 02:00:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:20,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:20,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:20,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954053994] [2023-02-18 02:00:20,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 02:00:20,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335539390] [2023-02-18 02:00:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:20,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:20,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:20,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:20,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 02:00:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:20,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 02:00:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-18 02:00:20,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 02:00:20,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335539390] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 02:00:20,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 02:00:20,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 02:00:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781131163] [2023-02-18 02:00:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 02:00:20,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 02:00:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 02:00:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 02:00:20,830 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 02:00:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:20,855 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2023-02-18 02:00:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 02:00:20,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-02-18 02:00:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:20,864 INFO L225 Difference]: With dead ends: 67 [2023-02-18 02:00:20,864 INFO L226 Difference]: Without dead ends: 31 [2023-02-18 02:00:20,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 02:00:20,871 INFO L413 NwaCegarLoop]: 46 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, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:20,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 02:00:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-18 02:00:20,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-18 02:00:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-18 02:00:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-02-18 02:00:20,904 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2023-02-18 02:00:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:20,904 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-02-18 02:00:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 02:00:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-02-18 02:00:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-18 02:00:20,908 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:20,908 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:20,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:21,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 02:00:21,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:21,110 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2023-02-18 02:00:21,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:21,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128519074] [2023-02-18 02:00:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:21,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:21,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832757695] [2023-02-18 02:00:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:21,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:21,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:21,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:21,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 02:00:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:21,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 02:00:21,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 02:00:21,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 02:00:21,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:21,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128519074] [2023-02-18 02:00:21,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:21,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832757695] [2023-02-18 02:00:21,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832757695] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:00:21,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:00:21,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-02-18 02:00:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070221267] [2023-02-18 02:00:21,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 02:00:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 02:00:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 02:00:21,376 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 02:00:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:21,489 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2023-02-18 02:00:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 02:00:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2023-02-18 02:00:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:21,493 INFO L225 Difference]: With dead ends: 48 [2023-02-18 02:00:21,493 INFO L226 Difference]: Without dead ends: 40 [2023-02-18 02:00:21,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-18 02:00:21,495 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:21,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 88 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 02:00:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-18 02:00:21,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-02-18 02:00:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-18 02:00:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-02-18 02:00:21,517 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 40 [2023-02-18 02:00:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:21,518 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-02-18 02:00:21,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 02:00:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-02-18 02:00:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 02:00:21,523 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:21,523 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:21,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:21,731 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,SelfDestructingSolverStorable1 [2023-02-18 02:00:21,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2023-02-18 02:00:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:21,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135389020] [2023-02-18 02:00:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:21,749 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:21,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28996733] [2023-02-18 02:00:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:21,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:21,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:21,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 02:00:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:21,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 02:00:21,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 02:00:21,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 02:00:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:21,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135389020] [2023-02-18 02:00:21,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:21,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28996733] [2023-02-18 02:00:21,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28996733] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 02:00:21,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:00:21,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-02-18 02:00:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510050775] [2023-02-18 02:00:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 02:00:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 02:00:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 02:00:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-02-18 02:00:21,906 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 02:00:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:21,953 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-02-18 02:00:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 02:00:21,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2023-02-18 02:00:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:21,955 INFO L225 Difference]: With dead ends: 39 [2023-02-18 02:00:21,957 INFO L226 Difference]: Without dead ends: 37 [2023-02-18 02:00:21,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-18 02:00:21,960 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:21,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 02:00:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-18 02:00:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-18 02:00:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-18 02:00:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-02-18 02:00:21,980 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 41 [2023-02-18 02:00:21,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:21,980 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-02-18 02:00:21,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 02:00:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-02-18 02:00:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 02:00:21,982 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:21,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:22,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:22,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:22,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2023-02-18 02:00:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:22,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278891267] [2023-02-18 02:00:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:22,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:22,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:22,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946416592] [2023-02-18 02:00:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:22,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:22,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:22,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:22,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 02:00:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:22,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 02:00:22,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 02:00:22,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 02:00:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278891267] [2023-02-18 02:00:22,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946416592] [2023-02-18 02:00:22,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946416592] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 02:00:22,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:00:22,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-18 02:00:22,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882734009] [2023-02-18 02:00:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 02:00:22,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 02:00:22,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 02:00:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-18 02:00:22,413 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-18 02:00:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:22,456 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2023-02-18 02:00:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 02:00:22,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2023-02-18 02:00:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:22,458 INFO L225 Difference]: With dead ends: 50 [2023-02-18 02:00:22,458 INFO L226 Difference]: Without dead ends: 48 [2023-02-18 02:00:22,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-18 02:00:22,459 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:22,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 141 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 02:00:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-18 02:00:22,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2023-02-18 02:00:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 02:00:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2023-02-18 02:00:22,468 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 46 [2023-02-18 02:00:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:22,468 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2023-02-18 02:00:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-18 02:00:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2023-02-18 02:00:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-18 02:00:22,469 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:22,470 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:22,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:22,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:22,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash 779090230, now seen corresponding path program 1 times [2023-02-18 02:00:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:22,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466137240] [2023-02-18 02:00:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:22,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:22,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823778148] [2023-02-18 02:00:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:22,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:22,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:22,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:22,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 02:00:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:22,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 02:00:22,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-02-18 02:00:22,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:22,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:22,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466137240] [2023-02-18 02:00:22,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:22,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823778148] [2023-02-18 02:00:22,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823778148] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 02:00:22,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:00:22,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-18 02:00:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302543653] [2023-02-18 02:00:22,877 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:22,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 02:00:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 02:00:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 02:00:22,884 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-18 02:00:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:22,989 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2023-02-18 02:00:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 02:00:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2023-02-18 02:00:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:22,991 INFO L225 Difference]: With dead ends: 54 [2023-02-18 02:00:22,991 INFO L226 Difference]: Without dead ends: 52 [2023-02-18 02:00:22,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-02-18 02:00:22,993 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:22,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 145 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 02:00:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-18 02:00:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2023-02-18 02:00:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 02:00:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-02-18 02:00:23,003 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 51 [2023-02-18 02:00:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:23,004 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-02-18 02:00:23,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-18 02:00:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-02-18 02:00:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-18 02:00:23,005 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:23,005 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:23,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:23,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:23,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2023-02-18 02:00:23,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:23,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317871365] [2023-02-18 02:00:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:23,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:23,223 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:23,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906688438] [2023-02-18 02:00:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:23,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:23,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:23,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:23,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 02:00:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:23,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-18 02:00:23,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-18 02:00:23,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:23,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:23,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317871365] [2023-02-18 02:00:23,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:23,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906688438] [2023-02-18 02:00:23,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906688438] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 02:00:23,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:00:23,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-18 02:00:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317503867] [2023-02-18 02:00:23,467 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:23,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 02:00:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 02:00:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-02-18 02:00:23,469 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 02:00:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:23,669 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-02-18 02:00:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 02:00:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2023-02-18 02:00:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:23,674 INFO L225 Difference]: With dead ends: 60 [2023-02-18 02:00:23,674 INFO L226 Difference]: Without dead ends: 58 [2023-02-18 02:00:23,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-02-18 02:00:23,675 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:23,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 120 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 02:00:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-18 02:00:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2023-02-18 02:00:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 02:00:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2023-02-18 02:00:23,683 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 56 [2023-02-18 02:00:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:23,683 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2023-02-18 02:00:23,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 02:00:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2023-02-18 02:00:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-18 02:00:23,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:23,684 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:23,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:23,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2023-02-18 02:00:23,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:23,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415828780] [2023-02-18 02:00:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:23,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:23,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913387464] [2023-02-18 02:00:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:23,902 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:23,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 02:00:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:23,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 02:00:23,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-02-18 02:00:23,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-02-18 02:00:24,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:24,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415828780] [2023-02-18 02:00:24,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:24,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913387464] [2023-02-18 02:00:24,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913387464] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:00:24,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:00:24,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-18 02:00:24,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526416417] [2023-02-18 02:00:24,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:24,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 02:00:24,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 02:00:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-18 02:00:24,016 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 02:00:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:24,207 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2023-02-18 02:00:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 02:00:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2023-02-18 02:00:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:24,208 INFO L225 Difference]: With dead ends: 102 [2023-02-18 02:00:24,209 INFO L226 Difference]: Without dead ends: 94 [2023-02-18 02:00:24,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-18 02:00:24,210 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:24,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 231 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 02:00:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-18 02:00:24,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2023-02-18 02:00:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-02-18 02:00:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2023-02-18 02:00:24,226 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2023-02-18 02:00:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:24,226 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2023-02-18 02:00:24,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 02:00:24,226 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2023-02-18 02:00:24,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-18 02:00:24,227 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:24,228 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:24,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:24,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:24,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2023-02-18 02:00:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:24,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282641420] [2023-02-18 02:00:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:24,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:24,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933573963] [2023-02-18 02:00:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:24,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:24,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:24,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 02:00:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:24,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-18 02:00:24,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-02-18 02:00:24,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-02-18 02:00:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:24,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282641420] [2023-02-18 02:00:24,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:24,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933573963] [2023-02-18 02:00:24,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933573963] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:00:24,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:00:24,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2023-02-18 02:00:24,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557995315] [2023-02-18 02:00:24,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:24,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 02:00:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:24,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 02:00:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-18 02:00:24,630 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-02-18 02:00:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:25,061 INFO L93 Difference]: Finished difference Result 128 states and 183 transitions. [2023-02-18 02:00:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 02:00:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 71 [2023-02-18 02:00:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:25,064 INFO L225 Difference]: With dead ends: 128 [2023-02-18 02:00:25,064 INFO L226 Difference]: Without dead ends: 124 [2023-02-18 02:00:25,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-02-18 02:00:25,066 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 46 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:25,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 232 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 02:00:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-18 02:00:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2023-02-18 02:00:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-02-18 02:00:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2023-02-18 02:00:25,089 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 71 [2023-02-18 02:00:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:25,090 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2023-02-18 02:00:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-02-18 02:00:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2023-02-18 02:00:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-18 02:00:25,091 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:25,091 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:25,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-18 02:00:25,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-18 02:00:25,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:25,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1352497678, now seen corresponding path program 2 times [2023-02-18 02:00:25,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:25,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301555466] [2023-02-18 02:00:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:25,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:25,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:25,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639814856] [2023-02-18 02:00:25,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 02:00:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:25,311 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:25,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 02:00:25,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 02:00:25,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:00:25,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-18 02:00:25,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-18 02:00:25,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:25,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:25,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301555466] [2023-02-18 02:00:25,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:25,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639814856] [2023-02-18 02:00:25,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639814856] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 02:00:25,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:00:25,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-02-18 02:00:25,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677080842] [2023-02-18 02:00:25,845 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:25,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 02:00:25,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 02:00:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-02-18 02:00:25,847 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-18 02:00:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:26,506 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2023-02-18 02:00:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 02:00:26,508 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 76 [2023-02-18 02:00:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:26,509 INFO L225 Difference]: With dead ends: 124 [2023-02-18 02:00:26,509 INFO L226 Difference]: Without dead ends: 122 [2023-02-18 02:00:26,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-02-18 02:00:26,510 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:26,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 141 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 02:00:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-18 02:00:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2023-02-18 02:00:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 68 states have internal predecessors, (77), 42 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-02-18 02:00:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 160 transitions. [2023-02-18 02:00:26,547 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 160 transitions. Word has length 76 [2023-02-18 02:00:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:26,548 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 160 transitions. [2023-02-18 02:00:26,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-18 02:00:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 160 transitions. [2023-02-18 02:00:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-18 02:00:26,550 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:26,551 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:26,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:26,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:26,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash -421153901, now seen corresponding path program 3 times [2023-02-18 02:00:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:26,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654805241] [2023-02-18 02:00:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:26,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:26,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189255089] [2023-02-18 02:00:26,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 02:00:26,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:26,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:26,774 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:26,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 02:00:26,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 02:00:26,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:00:26,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-18 02:00:26,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-02-18 02:00:27,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:27,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654805241] [2023-02-18 02:00:27,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189255089] [2023-02-18 02:00:27,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189255089] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 02:00:27,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:00:27,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-02-18 02:00:27,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526509223] [2023-02-18 02:00:27,914 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:27,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 02:00:27,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 02:00:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2023-02-18 02:00:27,915 INFO L87 Difference]: Start difference. First operand 119 states and 160 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-02-18 02:00:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:28,745 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2023-02-18 02:00:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 02:00:28,746 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 81 [2023-02-18 02:00:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:28,747 INFO L225 Difference]: With dead ends: 128 [2023-02-18 02:00:28,747 INFO L226 Difference]: Without dead ends: 126 [2023-02-18 02:00:28,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2023-02-18 02:00:28,748 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:28,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 136 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 02:00:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-18 02:00:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2023-02-18 02:00:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-02-18 02:00:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2023-02-18 02:00:28,774 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 81 [2023-02-18 02:00:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:28,774 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2023-02-18 02:00:28,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-02-18 02:00:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2023-02-18 02:00:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-18 02:00:28,775 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:28,775 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:28,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:28,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 02:00:28,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2023-02-18 02:00:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:28,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917453479] [2023-02-18 02:00:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:28,991 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:28,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737823237] [2023-02-18 02:00:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:28,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:28,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:28,993 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:29,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 02:00:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:29,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-18 02:00:29,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-02-18 02:00:29,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-02-18 02:00:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917453479] [2023-02-18 02:00:29,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737823237] [2023-02-18 02:00:29,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737823237] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:00:29,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:00:29,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-02-18 02:00:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835420501] [2023-02-18 02:00:29,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 02:00:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 02:00:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-02-18 02:00:29,763 INFO L87 Difference]: Start difference. First operand 123 states and 163 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-18 02:00:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:37,524 INFO L93 Difference]: Finished difference Result 208 states and 295 transitions. [2023-02-18 02:00:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 02:00:37,524 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 87 [2023-02-18 02:00:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:37,528 INFO L225 Difference]: With dead ends: 208 [2023-02-18 02:00:37,529 INFO L226 Difference]: Without dead ends: 204 [2023-02-18 02:00:37,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 02:00:37,532 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 94 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:37,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 343 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-02-18 02:00:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-18 02:00:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2023-02-18 02:00:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 107 states have internal predecessors, (127), 79 states have call successors, (79), 14 states have call predecessors, (79), 14 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-02-18 02:00:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 284 transitions. [2023-02-18 02:00:37,581 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 284 transitions. Word has length 87 [2023-02-18 02:00:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:37,582 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 284 transitions. [2023-02-18 02:00:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-18 02:00:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 284 transitions. [2023-02-18 02:00:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-02-18 02:00:37,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:37,583 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:37,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:37,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-18 02:00:37,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1140726838, now seen corresponding path program 4 times [2023-02-18 02:00:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:37,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164284910] [2023-02-18 02:00:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:37,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:37,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069893965] [2023-02-18 02:00:37,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 02:00:37,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:37,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:37,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 02:00:37,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 02:00:37,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:00:37,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 02:00:37,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-02-18 02:00:37,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 02:00:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164284910] [2023-02-18 02:00:37,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069893965] [2023-02-18 02:00:37,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069893965] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 02:00:37,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 02:00:37,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 02:00:37,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510013371] [2023-02-18 02:00:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 02:00:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 02:00:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 02:00:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 02:00:37,881 INFO L87 Difference]: Start difference. First operand 200 states and 284 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-02-18 02:00:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:37,987 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2023-02-18 02:00:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 02:00:37,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 101 [2023-02-18 02:00:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:37,989 INFO L225 Difference]: With dead ends: 253 [2023-02-18 02:00:37,989 INFO L226 Difference]: Without dead ends: 181 [2023-02-18 02:00:37,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 02:00:37,990 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 7 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:37,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 145 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 02:00:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-18 02:00:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 167. [2023-02-18 02:00:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 89 states have (on average 1.146067415730337) internal successors, (102), 90 states have internal predecessors, (102), 63 states have call successors, (63), 14 states have call predecessors, (63), 14 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-02-18 02:00:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 227 transitions. [2023-02-18 02:00:38,029 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 227 transitions. Word has length 101 [2023-02-18 02:00:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:38,030 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 227 transitions. [2023-02-18 02:00:38,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-02-18 02:00:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 227 transitions. [2023-02-18 02:00:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-02-18 02:00:38,031 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:38,031 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:38,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:38,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-18 02:00:38,237 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1899970478, now seen corresponding path program 1 times [2023-02-18 02:00:38,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:38,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641841446] [2023-02-18 02:00:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:38,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:38,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855931526] [2023-02-18 02:00:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:38,254 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:38,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 02:00:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:00:38,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-18 02:00:38,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 57 proven. 28 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-02-18 02:00:38,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:00:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 51 proven. 19 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-02-18 02:00:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:00:39,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641841446] [2023-02-18 02:00:39,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:00:39,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855931526] [2023-02-18 02:00:39,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855931526] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:00:39,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:00:39,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2023-02-18 02:00:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842264698] [2023-02-18 02:00:39,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:00:39,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 02:00:39,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:00:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 02:00:39,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-02-18 02:00:39,691 INFO L87 Difference]: Start difference. First operand 167 states and 227 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 11 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2023-02-18 02:00:55,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:00:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:00:58,957 INFO L93 Difference]: Finished difference Result 209 states and 287 transitions. [2023-02-18 02:00:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-18 02:00:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 11 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 103 [2023-02-18 02:00:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:00:58,959 INFO L225 Difference]: With dead ends: 209 [2023-02-18 02:00:58,959 INFO L226 Difference]: Without dead ends: 207 [2023-02-18 02:00:58,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=334, Invalid=1224, Unknown=2, NotChecked=0, Total=1560 [2023-02-18 02:00:58,961 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 93 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 121 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-02-18 02:00:58,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 161 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 872 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2023-02-18 02:00:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-02-18 02:00:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2023-02-18 02:00:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 108 states have internal predecessors, (121), 75 states have call successors, (75), 15 states have call predecessors, (75), 15 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2023-02-18 02:00:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 270 transitions. [2023-02-18 02:00:59,033 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 270 transitions. Word has length 103 [2023-02-18 02:00:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:00:59,034 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 270 transitions. [2023-02-18 02:00:59,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 11 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2023-02-18 02:00:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 270 transitions. [2023-02-18 02:00:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-18 02:00:59,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:00:59,036 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:00:59,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 02:00:59,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-18 02:00:59,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:00:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:00:59,243 INFO L85 PathProgramCache]: Analyzing trace with hash -349873392, now seen corresponding path program 2 times [2023-02-18 02:00:59,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:00:59,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499165103] [2023-02-18 02:00:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:00:59,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:00:59,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:00:59,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15010550] [2023-02-18 02:00:59,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 02:00:59,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:00:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:00:59,266 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:00:59,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 02:00:59,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 02:00:59,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:00:59,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-18 02:00:59,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:00:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 63 proven. 51 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-02-18 02:00:59,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:01:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 57 proven. 42 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-02-18 02:01:00,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:01:00,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499165103] [2023-02-18 02:01:00,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:01:00,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15010550] [2023-02-18 02:01:00,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15010550] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:01:00,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:01:00,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2023-02-18 02:01:00,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514431880] [2023-02-18 02:01:00,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:01:00,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 02:01:00,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:01:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 02:01:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-02-18 02:01:00,356 INFO L87 Difference]: Start difference. First operand 197 states and 270 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 21 states have internal predecessors, (48), 13 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 13 states have call predecessors, (38), 13 states have call successors, (38) [2023-02-18 02:01:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:01:13,069 INFO L93 Difference]: Finished difference Result 278 states and 390 transitions. [2023-02-18 02:01:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-18 02:01:13,069 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 21 states have internal predecessors, (48), 13 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 13 states have call predecessors, (38), 13 states have call successors, (38) Word has length 120 [2023-02-18 02:01:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:01:13,071 INFO L225 Difference]: With dead ends: 278 [2023-02-18 02:01:13,071 INFO L226 Difference]: Without dead ends: 276 [2023-02-18 02:01:13,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=459, Invalid=2091, Unknown=0, NotChecked=0, Total=2550 [2023-02-18 02:01:13,072 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 108 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-02-18 02:01:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 262 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-02-18 02:01:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-02-18 02:01:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 244. [2023-02-18 02:01:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 132 states have (on average 1.1515151515151516) internal successors, (152), 136 states have internal predecessors, (152), 93 states have call successors, (93), 18 states have call predecessors, (93), 18 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-02-18 02:01:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 337 transitions. [2023-02-18 02:01:13,190 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 337 transitions. Word has length 120 [2023-02-18 02:01:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:01:13,191 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 337 transitions. [2023-02-18 02:01:13,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 21 states have internal predecessors, (48), 13 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 13 states have call predecessors, (38), 13 states have call successors, (38) [2023-02-18 02:01:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 337 transitions. [2023-02-18 02:01:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-18 02:01:13,192 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:01:13,192 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:01:13,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 02:01:13,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:01:13,398 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:01:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:01:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -397785577, now seen corresponding path program 3 times [2023-02-18 02:01:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:01:13,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175771885] [2023-02-18 02:01:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:01:13,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:01:13,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:01:13,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835169349] [2023-02-18 02:01:13,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 02:01:13,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:01:13,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:01:13,408 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:01:13,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 02:01:13,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 02:01:13,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:01:13,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-18 02:01:13,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:01:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 43 proven. 37 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2023-02-18 02:01:13,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:01:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-02-18 02:01:13,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:01:13,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175771885] [2023-02-18 02:01:13,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:01:13,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835169349] [2023-02-18 02:01:13,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835169349] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:01:13,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:01:13,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2023-02-18 02:01:13,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444254210] [2023-02-18 02:01:13,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:01:13,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 02:01:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:01:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 02:01:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-02-18 02:01:13,755 INFO L87 Difference]: Start difference. First operand 244 states and 337 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 16 states have internal predecessors, (46), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2023-02-18 02:01:16,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:01:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:01:16,571 INFO L93 Difference]: Finished difference Result 283 states and 394 transitions. [2023-02-18 02:01:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-18 02:01:16,572 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 16 states have internal predecessors, (46), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) Word has length 123 [2023-02-18 02:01:16,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:01:16,575 INFO L225 Difference]: With dead ends: 283 [2023-02-18 02:01:16,575 INFO L226 Difference]: Without dead ends: 281 [2023-02-18 02:01:16,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2023-02-18 02:01:16,576 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 51 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-18 02:01:16,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 243 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-18 02:01:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-02-18 02:01:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 248. [2023-02-18 02:01:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 135 states have (on average 1.1481481481481481) internal successors, (155), 139 states have internal predecessors, (155), 93 states have call successors, (93), 19 states have call predecessors, (93), 19 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-02-18 02:01:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 340 transitions. [2023-02-18 02:01:16,703 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 340 transitions. Word has length 123 [2023-02-18 02:01:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:01:16,703 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 340 transitions. [2023-02-18 02:01:16,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 16 states have internal predecessors, (46), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2023-02-18 02:01:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 340 transitions. [2023-02-18 02:01:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-02-18 02:01:16,705 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:01:16,705 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:01:16,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-18 02:01:16,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 02:01:16,914 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:01:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:01:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1816082155, now seen corresponding path program 2 times [2023-02-18 02:01:16,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:01:16,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812442096] [2023-02-18 02:01:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:01:16,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:01:16,922 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:01:16,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566260202] [2023-02-18 02:01:16,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 02:01:16,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:01:16,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:01:16,923 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:01:16,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 02:01:16,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 02:01:16,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:01:16,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 67 conjunts are in the unsatisfiable core [2023-02-18 02:01:16,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:01:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 38 proven. 52 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-02-18 02:01:17,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:01:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-02-18 02:01:18,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:01:18,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812442096] [2023-02-18 02:01:18,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:01:18,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566260202] [2023-02-18 02:01:18,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566260202] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:01:18,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:01:18,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2023-02-18 02:01:18,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446744843] [2023-02-18 02:01:18,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:01:18,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 02:01:18,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:01:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 02:01:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2023-02-18 02:01:18,449 INFO L87 Difference]: Start difference. First operand 248 states and 340 transitions. Second operand has 28 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 14 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) [2023-02-18 02:01:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:01:42,505 INFO L93 Difference]: Finished difference Result 367 states and 516 transitions. [2023-02-18 02:01:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-18 02:01:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 14 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) Word has length 134 [2023-02-18 02:01:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:01:42,507 INFO L225 Difference]: With dead ends: 367 [2023-02-18 02:01:42,507 INFO L226 Difference]: Without dead ends: 359 [2023-02-18 02:01:42,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 238 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=855, Invalid=4115, Unknown=0, NotChecked=0, Total=4970 [2023-02-18 02:01:42,509 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 198 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-02-18 02:01:42,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 622 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2023-02-18 02:01:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-02-18 02:01:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 341. [2023-02-18 02:01:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 180 states have (on average 1.1555555555555554) internal successors, (208), 185 states have internal predecessors, (208), 137 states have call successors, (137), 23 states have call predecessors, (137), 23 states have return successors, (136), 132 states have call predecessors, (136), 136 states have call successors, (136) [2023-02-18 02:01:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 481 transitions. [2023-02-18 02:01:42,734 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 481 transitions. Word has length 134 [2023-02-18 02:01:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:01:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 481 transitions. [2023-02-18 02:01:42,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 14 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) [2023-02-18 02:01:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 481 transitions. [2023-02-18 02:01:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-02-18 02:01:42,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:01:42,738 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:01:42,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 02:01:42,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-18 02:01:42,945 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:01:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:01:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1798457687, now seen corresponding path program 4 times [2023-02-18 02:01:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:01:42,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231221823] [2023-02-18 02:01:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:01:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:01:42,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:01:42,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746742127] [2023-02-18 02:01:42,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 02:01:42,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:01:42,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:01:42,966 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:01:42,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 02:01:43,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 02:01:43,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:01:43,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 92 conjunts are in the unsatisfiable core [2023-02-18 02:01:43,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:01:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 165 proven. 161 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-02-18 02:01:44,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:02:09,286 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~q~0#1_61| Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse14 (* |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~q~0#1_61|)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| .cse2))) (let ((.cse1 (+ .cse14 .cse13)) (.cse9 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse10 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~q~0#1_61|)) (.cse11 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse12 (* |c_ULTIMATE.start_main_~y~0#1| (- 2) .cse2))) (let ((.cse3 (- .cse14)) (.cse4 (- .cse13)) (.cse0 (+ .cse1 .cse9 .cse10 .cse11 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| .cse2 0) (* (- 1) |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~q~0#1_61| 0) .cse12))) (let ((.cse5 (+ (+ .cse3 .cse4) .cse0))) (or (not (>= .cse0 .cse1)) (not (= (+ .cse1 (+ (+ (+ (+ (* |c_ULTIMATE.start_main_~yy~0#1| .cse2) (* |c_ULTIMATE.start_main_~xy~0#1| |v_ULTIMATE.start_main_~q~0#1_61|)) .cse3) (- (* |c_ULTIMATE.start_main_~y~0#1| .cse1))) .cse4)) 0)) (>= .cse5 .cse1) (= (+ (let ((.cse8 (+ (+ 0 1) 1))) (let ((.cse6 (+ (- (* .cse8 .cse2)) |c_ULTIMATE.start_main_~s~0#1|))) (+ (- (* |c_ULTIMATE.start_main_~y~0#1| .cse6)) (+ (- (* |c_ULTIMATE.start_main_~y~0#1| .cse5)) (let ((.cse7 (+ (* (- 1) .cse8 |v_ULTIMATE.start_main_~q~0#1_61|) |c_ULTIMATE.start_main_~q~0#1|))) (+ (- (* |c_ULTIMATE.start_main_~x~0#1| .cse7)) (+ (* |c_ULTIMATE.start_main_~xy~0#1| .cse7) (* |c_ULTIMATE.start_main_~yy~0#1| .cse6)))))))) .cse5) 0) (not (= |c_ULTIMATE.start_main_~c~0#1| .cse1)) (not (<= |c_ULTIMATE.start_main_~p~0#1| (+ |v_ULTIMATE.start_main_~q~0#1_61| (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)))) (= .cse5 0) (not (= |c_ULTIMATE.start_main_~b~0#1| (+ .cse9 .cse10 .cse11 (* .cse1 2) .cse12)))))))))) (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|)) is different from true [2023-02-18 02:02:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 190 proven. 88 refuted. 0 times theorem prover too weak. 564 trivial. 3 not checked. [2023-02-18 02:02:09,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:02:09,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231221823] [2023-02-18 02:02:09,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:02:09,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746742127] [2023-02-18 02:02:09,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746742127] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:02:09,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:02:09,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 36 [2023-02-18 02:02:09,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727657807] [2023-02-18 02:02:09,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:02:09,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-18 02:02:09,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:02:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-18 02:02:09,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=995, Unknown=7, NotChecked=66, Total=1260 [2023-02-18 02:02:09,675 INFO L87 Difference]: Start difference. First operand 341 states and 481 transitions. Second operand has 36 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 27 states have internal predecessors, (58), 15 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (48), 19 states have call predecessors, (48), 14 states have call successors, (48) [2023-02-18 02:02:12,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:02:18,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:02:22,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:02:27,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:02:32,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:02:37,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:02:39,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:02:46,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:02:49,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:03:12,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:03:15,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:03:30,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 15.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:03:32,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:03:35,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:03:38,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:03:46,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:03:49,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:05,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:04:09,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:12,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:21,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:22,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:24,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:26,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:30,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:32,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:34,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:36,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:38,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:40,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:04:42,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:04:50,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:52,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:54,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:04:56,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:07,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:08,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:11,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:16,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:18,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:20,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:26,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:27,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:35,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:36,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:05:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:05:58,052 INFO L93 Difference]: Finished difference Result 467 states and 666 transitions. [2023-02-18 02:05:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-02-18 02:05:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 27 states have internal predecessors, (58), 15 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (48), 19 states have call predecessors, (48), 14 states have call successors, (48) Word has length 150 [2023-02-18 02:05:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:05:58,055 INFO L225 Difference]: With dead ends: 467 [2023-02-18 02:05:58,056 INFO L226 Difference]: Without dead ends: 465 [2023-02-18 02:05:58,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 280 SyntacticMatches, 24 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2582 ImplicationChecksByTransitivity, 122.6s TimeCoverageRelationStatistics Valid=1199, Invalid=5428, Unknown=19, NotChecked=160, Total=6806 [2023-02-18 02:05:58,058 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 187 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 385 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 130.0s IncrementalHoareTripleChecker+Time [2023-02-18 02:05:58,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 306 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2262 Invalid, 37 Unknown, 188 Unchecked, 130.0s Time] [2023-02-18 02:05:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-02-18 02:05:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 372. [2023-02-18 02:05:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 200 states have (on average 1.145) internal successors, (229), 207 states have internal predecessors, (229), 145 states have call successors, (145), 26 states have call predecessors, (145), 26 states have return successors, (144), 138 states have call predecessors, (144), 144 states have call successors, (144) [2023-02-18 02:05:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 518 transitions. [2023-02-18 02:05:58,424 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 518 transitions. Word has length 150 [2023-02-18 02:05:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:05:58,424 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 518 transitions. [2023-02-18 02:05:58,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 27 states have internal predecessors, (58), 15 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (48), 19 states have call predecessors, (48), 14 states have call successors, (48) [2023-02-18 02:05:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 518 transitions. [2023-02-18 02:05:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-02-18 02:05:58,426 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:05:58,426 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:05:58,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-02-18 02:05:58,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-18 02:05:58,634 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:05:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:05:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1812352379, now seen corresponding path program 3 times [2023-02-18 02:05:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:05:58,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834735037] [2023-02-18 02:05:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:05:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:05:58,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:05:58,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299001891] [2023-02-18 02:05:58,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 02:05:58,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:05:58,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:05:58,644 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:05:58,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 02:05:58,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-18 02:05:58,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:05:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-18 02:05:58,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:05:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 99 proven. 31 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-02-18 02:05:58,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:06:00,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:06:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834735037] [2023-02-18 02:06:00,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:06:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299001891] [2023-02-18 02:06:00,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299001891] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 02:06:00,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:06:00,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-18 02:06:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140649608] [2023-02-18 02:06:00,910 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 02:06:00,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 02:06:00,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:06:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 02:06:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=291, Unknown=1, NotChecked=0, Total=342 [2023-02-18 02:06:00,912 INFO L87 Difference]: Start difference. First operand 372 states and 518 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-02-18 02:06:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:06:01,596 INFO L93 Difference]: Finished difference Result 420 states and 583 transitions. [2023-02-18 02:06:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 02:06:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 153 [2023-02-18 02:06:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:06:01,598 INFO L225 Difference]: With dead ends: 420 [2023-02-18 02:06:01,598 INFO L226 Difference]: Without dead ends: 413 [2023-02-18 02:06:01,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=83, Invalid=468, Unknown=1, NotChecked=0, Total=552 [2023-02-18 02:06:01,599 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 20 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 02:06:01,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 168 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 02:06:01,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-02-18 02:06:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 399. [2023-02-18 02:06:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 212 states have (on average 1.1415094339622642) internal successors, (242), 219 states have internal predecessors, (242), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 151 states have call predecessors, (157), 157 states have call successors, (157) [2023-02-18 02:06:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 557 transitions. [2023-02-18 02:06:02,029 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 557 transitions. Word has length 153 [2023-02-18 02:06:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:06:02,029 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 557 transitions. [2023-02-18 02:06:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-02-18 02:06:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 557 transitions. [2023-02-18 02:06:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-02-18 02:06:02,032 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:06:02,032 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:06:02,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-18 02:06:02,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-18 02:06:02,237 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:06:02,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:06:02,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2095255219, now seen corresponding path program 5 times [2023-02-18 02:06:02,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:06:02,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703845658] [2023-02-18 02:06:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:06:02,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:06:02,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:06:02,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135628176] [2023-02-18 02:06:02,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 02:06:02,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:06:02,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:06:02,248 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:06:02,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 02:06:02,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-02-18 02:06:02,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:06:02,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 97 conjunts are in the unsatisfiable core [2023-02-18 02:06:02,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:06:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 129 proven. 245 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2023-02-18 02:06:03,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:06:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:06:03,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703845658] [2023-02-18 02:06:03,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:06:03,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135628176] [2023-02-18 02:06:03,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135628176] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 02:06:03,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:06:03,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-02-18 02:06:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597185376] [2023-02-18 02:06:03,467 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 02:06:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 02:06:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:06:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 02:06:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-02-18 02:06:03,468 INFO L87 Difference]: Start difference. First operand 399 states and 557 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 17 states have internal predecessors, (38), 10 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2023-02-18 02:06:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:06:05,886 INFO L93 Difference]: Finished difference Result 482 states and 667 transitions. [2023-02-18 02:06:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 02:06:05,887 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 17 states have internal predecessors, (38), 10 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) Word has length 175 [2023-02-18 02:06:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:06:05,889 INFO L225 Difference]: With dead ends: 482 [2023-02-18 02:06:05,889 INFO L226 Difference]: Without dead ends: 480 [2023-02-18 02:06:05,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1143, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 02:06:05,890 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 39 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-18 02:06:05,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 430 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-18 02:06:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-02-18 02:06:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 467. [2023-02-18 02:06:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 249 states have (on average 1.140562248995984) internal successors, (284), 255 states have internal predecessors, (284), 182 states have call successors, (182), 35 states have call predecessors, (182), 35 states have return successors, (181), 176 states have call predecessors, (181), 181 states have call successors, (181) [2023-02-18 02:06:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 647 transitions. [2023-02-18 02:06:06,347 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 647 transitions. Word has length 175 [2023-02-18 02:06:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:06:06,347 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 647 transitions. [2023-02-18 02:06:06,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 17 states have internal predecessors, (38), 10 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2023-02-18 02:06:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 647 transitions. [2023-02-18 02:06:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-02-18 02:06:06,349 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:06:06,349 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:06:06,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 02:06:06,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:06:06,550 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:06:06,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:06:06,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1493603019, now seen corresponding path program 4 times [2023-02-18 02:06:06,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:06:06,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665880292] [2023-02-18 02:06:06,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:06:06,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:06:06,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:06:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144872281] [2023-02-18 02:06:06,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 02:06:06,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:06:06,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:06:06,562 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:06:06,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 02:06:06,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 02:06:06,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:06:06,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-18 02:06:06,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:06:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 54 proven. 106 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2023-02-18 02:06:06,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:06:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 48 proven. 97 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2023-02-18 02:06:10,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:06:10,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665880292] [2023-02-18 02:06:10,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:06:10,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144872281] [2023-02-18 02:06:10,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144872281] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:06:10,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:06:10,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2023-02-18 02:06:10,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840390567] [2023-02-18 02:06:10,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:06:10,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-18 02:06:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:06:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-18 02:06:10,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-02-18 02:06:10,218 INFO L87 Difference]: Start difference. First operand 467 states and 647 transitions. Second operand has 31 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 states have internal predecessors, (59), 18 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (58), 16 states have call predecessors, (58), 16 states have call successors, (58) [2023-02-18 02:07:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:07:20,604 INFO L93 Difference]: Finished difference Result 718 states and 1052 transitions. [2023-02-18 02:07:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-18 02:07:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 states have internal predecessors, (59), 18 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (58), 16 states have call predecessors, (58), 16 states have call successors, (58) Word has length 178 [2023-02-18 02:07:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:07:20,608 INFO L225 Difference]: With dead ends: 718 [2023-02-18 02:07:20,608 INFO L226 Difference]: Without dead ends: 710 [2023-02-18 02:07:20,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=1433, Invalid=6399, Unknown=0, NotChecked=0, Total=7832 [2023-02-18 02:07:20,611 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 220 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 3908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.1s IncrementalHoareTripleChecker+Time [2023-02-18 02:07:20,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1104 Invalid, 3908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 53.1s Time] [2023-02-18 02:07:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-02-18 02:07:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 642. [2023-02-18 02:07:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 324 states have (on average 1.1666666666666667) internal successors, (378), 330 states have internal predecessors, (378), 278 states have call successors, (278), 39 states have call predecessors, (278), 39 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2023-02-18 02:07:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 933 transitions. [2023-02-18 02:07:21,361 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 933 transitions. Word has length 178 [2023-02-18 02:07:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:07:21,361 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 933 transitions. [2023-02-18 02:07:21,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 states have internal predecessors, (59), 18 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (58), 16 states have call predecessors, (58), 16 states have call successors, (58) [2023-02-18 02:07:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 933 transitions. [2023-02-18 02:07:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-02-18 02:07:21,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:07:21,364 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:07:21,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 02:07:21,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:07:21,569 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:07:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:07:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1847000169, now seen corresponding path program 5 times [2023-02-18 02:07:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:07:21,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313338292] [2023-02-18 02:07:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:07:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:07:21,579 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:07:21,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741660405] [2023-02-18 02:07:21,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 02:07:21,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:07:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:07:21,583 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:07:21,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 02:07:21,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-02-18 02:07:21,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:07:21,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-18 02:07:21,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:07:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 48 proven. 97 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2023-02-18 02:07:21,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:07:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 48 proven. 97 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2023-02-18 02:07:26,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:07:26,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313338292] [2023-02-18 02:07:26,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:07:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741660405] [2023-02-18 02:07:26,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741660405] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:07:26,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:07:26,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-02-18 02:07:26,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349026023] [2023-02-18 02:07:26,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:07:26,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 02:07:26,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:07:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 02:07:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2023-02-18 02:07:26,394 INFO L87 Difference]: Start difference. First operand 642 states and 933 transitions. Second operand has 28 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 17 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) [2023-02-18 02:08:06,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:08:09,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:08:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:08:18,400 INFO L93 Difference]: Finished difference Result 884 states and 1306 transitions. [2023-02-18 02:08:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-02-18 02:08:18,400 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 17 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) Word has length 178 [2023-02-18 02:08:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:08:18,405 INFO L225 Difference]: With dead ends: 884 [2023-02-18 02:08:18,405 INFO L226 Difference]: Without dead ends: 875 [2023-02-18 02:08:18,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1009, Invalid=4691, Unknown=0, NotChecked=0, Total=5700 [2023-02-18 02:08:18,407 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 142 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2023-02-18 02:08:18,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 776 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 43.6s Time] [2023-02-18 02:08:18,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-02-18 02:08:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 816. [2023-02-18 02:08:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 404 states have (on average 1.1757425742574257) internal successors, (475), 410 states have internal predecessors, (475), 365 states have call successors, (365), 46 states have call predecessors, (365), 46 states have return successors, (364), 359 states have call predecessors, (364), 364 states have call successors, (364) [2023-02-18 02:08:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1204 transitions. [2023-02-18 02:08:19,512 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1204 transitions. Word has length 178 [2023-02-18 02:08:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:08:19,512 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1204 transitions. [2023-02-18 02:08:19,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 17 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) [2023-02-18 02:08:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1204 transitions. [2023-02-18 02:08:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-02-18 02:08:19,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:08:19,516 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:08:19,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-18 02:08:19,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:08:19,722 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:08:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:08:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash 659368221, now seen corresponding path program 6 times [2023-02-18 02:08:19,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:08:19,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486357513] [2023-02-18 02:08:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:08:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:08:19,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:08:19,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801996058] [2023-02-18 02:08:19,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 02:08:19,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:08:19,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:08:19,737 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:08:19,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 02:08:19,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-18 02:08:19,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:08:19,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 92 conjunts are in the unsatisfiable core [2023-02-18 02:08:19,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:08:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 133 proven. 145 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2023-02-18 02:08:20,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:08:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 133 proven. 145 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2023-02-18 02:08:23,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:08:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486357513] [2023-02-18 02:08:23,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:08:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801996058] [2023-02-18 02:08:23,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801996058] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:08:23,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:08:23,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 36 [2023-02-18 02:08:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246372764] [2023-02-18 02:08:23,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:08:23,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-18 02:08:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:08:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-18 02:08:23,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2023-02-18 02:08:23,413 INFO L87 Difference]: Start difference. First operand 816 states and 1204 transitions. Second operand has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 20 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 18 states have call predecessors, (64), 18 states have call successors, (64) [2023-02-18 02:08:27,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:08:33,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:08:53,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:09:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:09:07,121 INFO L93 Difference]: Finished difference Result 923 states and 1351 transitions. [2023-02-18 02:09:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-18 02:09:07,122 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 20 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 18 states have call predecessors, (64), 18 states have call successors, (64) Word has length 203 [2023-02-18 02:09:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:09:07,126 INFO L225 Difference]: With dead ends: 923 [2023-02-18 02:09:07,127 INFO L226 Difference]: Without dead ends: 915 [2023-02-18 02:09:07,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 368 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=1294, Invalid=5348, Unknown=0, NotChecked=0, Total=6642 [2023-02-18 02:09:07,129 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 172 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 2615 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2023-02-18 02:09:07,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 570 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2615 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2023-02-18 02:09:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-02-18 02:09:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 765. [2023-02-18 02:09:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 386 states have (on average 1.1632124352331605) internal successors, (449), 390 states have internal predecessors, (449), 326 states have call successors, (326), 52 states have call predecessors, (326), 52 states have return successors, (325), 322 states have call predecessors, (325), 325 states have call successors, (325) [2023-02-18 02:09:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1100 transitions. [2023-02-18 02:09:08,440 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1100 transitions. Word has length 203 [2023-02-18 02:09:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:09:08,441 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1100 transitions. [2023-02-18 02:09:08,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 20 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 18 states have call predecessors, (64), 18 states have call successors, (64) [2023-02-18 02:09:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1100 transitions. [2023-02-18 02:09:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-02-18 02:09:08,444 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:09:08,444 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:09:08,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-02-18 02:09:08,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:09:08,650 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:09:08,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:09:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1100875798, now seen corresponding path program 6 times [2023-02-18 02:09:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:09:08,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358407960] [2023-02-18 02:09:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:09:08,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:09:08,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:09:08,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650678384] [2023-02-18 02:09:08,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 02:09:08,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:09:08,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:09:08,661 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:09:08,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-18 02:09:09,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-02-18 02:09:09,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 02:09:09,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 71 conjunts are in the unsatisfiable core [2023-02-18 02:09:09,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:09:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 301 proven. 177 refuted. 0 times theorem prover too weak. 1672 trivial. 0 not checked. [2023-02-18 02:09:09,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:09:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:09:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358407960] [2023-02-18 02:09:20,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:09:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650678384] [2023-02-18 02:09:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650678384] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 02:09:20,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 02:09:20,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-02-18 02:09:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222855771] [2023-02-18 02:09:20,273 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 02:09:20,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 02:09:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:09:20,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 02:09:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=605, Unknown=2, NotChecked=0, Total=756 [2023-02-18 02:09:20,276 INFO L87 Difference]: Start difference. First operand 765 states and 1100 transitions. Second operand has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-02-18 02:09:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 02:09:27,561 INFO L93 Difference]: Finished difference Result 877 states and 1251 transitions. [2023-02-18 02:09:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 02:09:27,562 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 216 [2023-02-18 02:09:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 02:09:27,565 INFO L225 Difference]: With dead ends: 877 [2023-02-18 02:09:27,565 INFO L226 Difference]: Without dead ends: 875 [2023-02-18 02:09:27,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=182, Invalid=808, Unknown=2, NotChecked=0, Total=992 [2023-02-18 02:09:27,565 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 29 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-18 02:09:27,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 186 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-02-18 02:09:27,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-02-18 02:09:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 871. [2023-02-18 02:09:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 445 states have (on average 1.1595505617977528) internal successors, (516), 452 states have internal predecessors, (516), 365 states have call successors, (365), 60 states have call predecessors, (365), 60 states have return successors, (364), 358 states have call predecessors, (364), 364 states have call successors, (364) [2023-02-18 02:09:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1245 transitions. [2023-02-18 02:09:29,160 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1245 transitions. Word has length 216 [2023-02-18 02:09:29,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 02:09:29,160 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1245 transitions. [2023-02-18 02:09:29,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-02-18 02:09:29,161 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1245 transitions. [2023-02-18 02:09:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-02-18 02:09:29,164 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 02:09:29,164 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 02:09:29,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-02-18 02:09:29,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:09:29,370 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 02:09:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 02:09:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2042278159, now seen corresponding path program 7 times [2023-02-18 02:09:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 02:09:29,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367301226] [2023-02-18 02:09:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 02:09:29,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 02:09:29,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 02:09:29,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916799199] [2023-02-18 02:09:29,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 02:09:29,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 02:09:29,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 02:09:29,382 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 02:09:29,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-18 02:09:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 02:09:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 131 conjunts are in the unsatisfiable core [2023-02-18 02:09:29,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 02:09:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 299 proven. 404 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2023-02-18 02:09:30,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 02:09:50,848 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse17 (+ |c_ULTIMATE.start_main_~k~0#1| 1))) (let ((.cse5 (+ (* (- 1) .cse17 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|)) (.cse4 (+ (- (* .cse17 |c_ULTIMATE.start_main_~s~0#1|)) |c_ULTIMATE.start_main_~r~0#1|))) (let ((.cse15 (* |c_ULTIMATE.start_main_~y~0#1| .cse4)) (.cse16 (* .cse5 |c_ULTIMATE.start_main_~x~0#1|))) (let ((.cse3 (- .cse16)) (.cse2 (- .cse15))) (let ((.cse14 (+ .cse3 .cse2)) (.cse10 (* |c_ULTIMATE.start_main_~y~0#1| (- 3) .cse4)) (.cse11 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse12 (* .cse5 |c_ULTIMATE.start_main_~x~0#1| (- 3))) (.cse13 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse0 (+ .cse15 .cse16))) (let ((.cse9 (+ .cse14 (+ .cse10 .cse11 .cse12 .cse13 (* .cse0 2) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| .cse4 0) (* (- 1) .cse5 |c_ULTIMATE.start_main_~x~0#1| 0))))) (let ((.cse1 (+ .cse9 .cse14))) (or (not (= .cse0 (+ |c_ULTIMATE.start_main_~c~0#1| (- |c_ULTIMATE.start_main_~b~0#1|)))) (= .cse1 0) (not (= (+ .cse0 (+ .cse2 (+ (+ .cse3 (+ (* |c_ULTIMATE.start_main_~yy~0#1| .cse4) (* |c_ULTIMATE.start_main_~xy~0#1| .cse5))) (- (* |c_ULTIMATE.start_main_~y~0#1| .cse0))))) 0)) (>= .cse1 .cse0) (= 0 (+ (let ((.cse8 (+ (+ (+ 0 1) 1) 1))) (let ((.cse6 (+ (- (* .cse8 .cse4)) |c_ULTIMATE.start_main_~s~0#1|))) (+ (- (* |c_ULTIMATE.start_main_~y~0#1| .cse6)) (+ (let ((.cse7 (+ (* (- 1) .cse8 .cse5) |c_ULTIMATE.start_main_~q~0#1|))) (+ (- (* |c_ULTIMATE.start_main_~x~0#1| .cse7)) (+ (* |c_ULTIMATE.start_main_~xy~0#1| .cse7) (* |c_ULTIMATE.start_main_~yy~0#1| .cse6)))) (- (* |c_ULTIMATE.start_main_~y~0#1| .cse1)))))) .cse1)) (not (>= .cse9 .cse0)) (not (= (+ .cse10 .cse11 (* .cse0 3) .cse12 .cse13) |c_ULTIMATE.start_main_~b~0#1|)))))))))) is different from true [2023-02-18 02:10:15,992 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse7 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse2 (+ (* (- 1) |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|)) (.cse8 (+ 0 1))) (let ((.cse4 (+ (* (- 1) .cse2 .cse8) |c_ULTIMATE.start_main_~q~0#1|)) (.cse6 (+ (- (* .cse8 .cse7)) |c_ULTIMATE.start_main_~s~0#1|))) (let ((.cse19 (* |c_ULTIMATE.start_main_~y~0#1| .cse6)) (.cse18 (* |c_ULTIMATE.start_main_~x~0#1| .cse4))) (let ((.cse15 (- .cse18)) (.cse16 (- .cse19))) (let ((.cse13 (* |c_ULTIMATE.start_main_~y~0#1| .cse6 (- 3))) (.cse9 (+ .cse18 .cse19)) (.cse11 (* |c_ULTIMATE.start_main_~x~0#1| .cse2)) (.cse12 (* |c_ULTIMATE.start_main_~y~0#1| .cse7)) (.cse14 (* |c_ULTIMATE.start_main_~x~0#1| (- 3) .cse4)) (.cse17 (+ .cse15 .cse16))) (let ((.cse10 (+ (+ .cse13 (* (- 1) |c_ULTIMATE.start_main_~x~0#1| .cse4 0) (* .cse9 2) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| .cse6 0) .cse11 .cse12 .cse14) .cse17))) (let ((.cse5 (+ .cse10 .cse17))) (or (= (+ (let ((.cse3 (+ (+ .cse8 1) 1))) (let ((.cse0 (+ (- (* .cse3 .cse6)) .cse7))) (+ (- (* |c_ULTIMATE.start_main_~y~0#1| .cse0)) (+ (let ((.cse1 (+ .cse2 (* (- 1) .cse3 .cse4)))) (+ (+ (* |c_ULTIMATE.start_main_~xy~0#1| .cse1) (* .cse0 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (- (* |c_ULTIMATE.start_main_~y~0#1| .cse5)))))) .cse5) 0) (not (= (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* (- 1) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)) |c_ULTIMATE.start_main_~b~0#1|)) (>= .cse5 .cse9) (not (>= .cse10 .cse9)) (not (= |c_ULTIMATE.start_main_~c~0#1| (+ .cse11 .cse12))) (not (= |c_ULTIMATE.start_main_~c~0#1| (+ (* .cse9 3) .cse13 .cse11 .cse12 .cse14))) (= .cse5 0) (not (= (+ .cse9 (+ (+ (- (* |c_ULTIMATE.start_main_~y~0#1| .cse9)) (+ .cse15 (+ (* .cse6 |c_ULTIMATE.start_main_~yy~0#1|) (* |c_ULTIMATE.start_main_~xy~0#1| .cse4)))) .cse16)) 0)))))))))) is different from true [2023-02-18 02:10:18,005 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse7 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse2 (+ (* (- 1) |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|)) (.cse8 (+ 0 1))) (let ((.cse4 (+ (* (- 1) .cse2 .cse8) |c_ULTIMATE.start_main_~q~0#1|)) (.cse6 (+ (- (* .cse8 .cse7)) |c_ULTIMATE.start_main_~s~0#1|))) (let ((.cse19 (* |c_ULTIMATE.start_main_~y~0#1| .cse6)) (.cse18 (* |c_ULTIMATE.start_main_~x~0#1| .cse4))) (let ((.cse15 (- .cse18)) (.cse16 (- .cse19))) (let ((.cse13 (* |c_ULTIMATE.start_main_~y~0#1| .cse6 (- 3))) (.cse9 (+ .cse18 .cse19)) (.cse11 (* |c_ULTIMATE.start_main_~x~0#1| .cse2)) (.cse12 (* |c_ULTIMATE.start_main_~y~0#1| .cse7)) (.cse14 (* |c_ULTIMATE.start_main_~x~0#1| (- 3) .cse4)) (.cse17 (+ .cse15 .cse16))) (let ((.cse10 (+ (+ .cse13 (* (- 1) |c_ULTIMATE.start_main_~x~0#1| .cse4 0) (* .cse9 2) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| .cse6 0) .cse11 .cse12 .cse14) .cse17))) (let ((.cse5 (+ .cse10 .cse17))) (or (= (+ (let ((.cse3 (+ (+ .cse8 1) 1))) (let ((.cse0 (+ (- (* .cse3 .cse6)) .cse7))) (+ (- (* |c_ULTIMATE.start_main_~y~0#1| .cse0)) (+ (let ((.cse1 (+ .cse2 (* (- 1) .cse3 .cse4)))) (+ (+ (* |c_ULTIMATE.start_main_~xy~0#1| .cse1) (* .cse0 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (- (* |c_ULTIMATE.start_main_~y~0#1| .cse5)))))) .cse5) 0) (not (= (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* (- 1) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)) |c_ULTIMATE.start_main_~b~0#1|)) (>= .cse5 .cse9) (not (>= .cse10 .cse9)) (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|) (not (= |c_ULTIMATE.start_main_~c~0#1| (+ .cse11 .cse12))) (not (= |c_ULTIMATE.start_main_~c~0#1| (+ (* .cse9 3) .cse13 .cse11 .cse12 .cse14))) (= .cse5 0) (not (= (+ .cse9 (+ (+ (- (* |c_ULTIMATE.start_main_~y~0#1| .cse9)) (+ .cse15 (+ (* .cse6 |c_ULTIMATE.start_main_~yy~0#1|) (* |c_ULTIMATE.start_main_~xy~0#1| .cse4)))) .cse16)) 0)))))))))) is different from true [2023-02-18 02:10:22,201 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| Int) (|v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| Int) (|v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392| Int) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_476| Int) (|v_ULTIMATE.start_main_~p~0#1_BEFORE_CALL_490| Int) (|v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205| Int)) (let ((.cse5 (+ (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (- 1) |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|) |v_ULTIMATE.start_main_~p~0#1_BEFORE_CALL_490|)) (.cse7 (+ |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_476| (- (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|)))) (.cse8 (+ 0 1))) (let ((.cse6 (+ |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| (- (* .cse7 .cse8)))) (.cse4 (+ |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (* (- 1) .cse8 .cse5)))) (let ((.cse18 (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse4)) (.cse17 (* .cse6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|))) (let ((.cse9 (- .cse17)) (.cse10 (- .cse18))) (let ((.cse11 (+ .cse17 .cse18)) (.cse16 (+ .cse9 .cse10))) (let ((.cse14 (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)) (.cse13 (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589|)) (.cse15 (+ (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| .cse7) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse5) (* (- 1) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse4 0) (* 2 .cse11) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| (- 3) .cse4) (* .cse6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| (- 3)) (* (- 1) .cse6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| 0)) .cse16))) (let ((.cse0 (+ .cse15 .cse16)) (.cse12 (+ .cse14 .cse13))) (or (= (+ .cse0 (let ((.cse3 (+ (+ .cse8 1) 1))) (let ((.cse2 (+ (- (* .cse3 .cse6)) .cse7))) (+ (+ (- (* .cse0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)) (let ((.cse1 (+ (* (- 1) .cse3 .cse4) .cse5))) (+ (- (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse1)) (+ (* |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219| .cse2) (* |v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205| .cse1))))) (- (* .cse2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)))))) 0) (not (= (+ (+ .cse9 (+ (+ (+ (* .cse4 |v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205|) (* |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219| .cse6)) .cse10) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| .cse11)))) .cse11) 0)) (>= .cse0 .cse11) (= (+ .cse12 (+ (+ (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| .cse12)) (+ (- .cse13) (+ (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219|) (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| |v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205|)))) (- .cse14))) 0) (not (>= .cse15 .cse11)) (= .cse0 0) (>= (+ (* (- 1) |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|) (* |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_476| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| |v_ULTIMATE.start_main_~p~0#1_BEFORE_CALL_490|) (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (- 1) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|) .cse12 (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (- 1) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589|) (* (- 1) |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)) .cse12))))))))))) is different from true [2023-02-18 02:10:28,423 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| Int) (|v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| Int) (|v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392| Int) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_476| Int) (|v_ULTIMATE.start_main_~p~0#1_BEFORE_CALL_490| Int) (|v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205| Int)) (let ((.cse5 (+ (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (- 1) |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|) |v_ULTIMATE.start_main_~p~0#1_BEFORE_CALL_490|)) (.cse7 (+ |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_476| (- (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|)))) (.cse8 (+ 0 1))) (let ((.cse6 (+ |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| (- (* .cse7 .cse8)))) (.cse4 (+ |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (* (- 1) .cse8 .cse5)))) (let ((.cse18 (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse4)) (.cse17 (* .cse6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|))) (let ((.cse9 (- .cse17)) (.cse10 (- .cse18))) (let ((.cse11 (+ .cse17 .cse18)) (.cse16 (+ .cse9 .cse10))) (let ((.cse14 (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)) (.cse13 (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589|)) (.cse15 (+ (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| .cse7) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse5) (* (- 1) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse4 0) (* 2 .cse11) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| (- 3) .cse4) (* .cse6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| (- 3)) (* (- 1) .cse6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| 0)) .cse16))) (let ((.cse0 (+ .cse15 .cse16)) (.cse12 (+ .cse14 .cse13))) (or (= (+ .cse0 (let ((.cse3 (+ (+ .cse8 1) 1))) (let ((.cse2 (+ (- (* .cse3 .cse6)) .cse7))) (+ (+ (- (* .cse0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)) (let ((.cse1 (+ (* (- 1) .cse3 .cse4) .cse5))) (+ (- (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| .cse1)) (+ (* |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219| .cse2) (* |v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205| .cse1))))) (- (* .cse2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)))))) 0) (not (= (+ (+ .cse9 (+ (+ (+ (* .cse4 |v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205|) (* |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219| .cse6)) .cse10) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| .cse11)))) .cse11) 0)) (>= .cse0 .cse11) (= (+ .cse12 (+ (+ (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| .cse12)) (+ (- .cse13) (+ (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_219|) (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| |v_ULTIMATE.start_main_~xy~0#1_BEFORE_CALL_205|)))) (- .cse14))) 0) (not (>= .cse15 .cse11)) (= .cse0 0) (>= (+ (* (- 1) |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|) (* |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_476| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| |v_ULTIMATE.start_main_~p~0#1_BEFORE_CALL_490|) (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (- 1) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_392|) .cse12 (* |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_563| (- 1) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_589|) (* (- 1) |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_555| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_576|)) .cse12)))))))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-02-18 02:10:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 350 proven. 112 refuted. 80 times theorem prover too weak. 1587 trivial. 29 not checked. [2023-02-18 02:10:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 02:10:28,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367301226] [2023-02-18 02:10:28,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 02:10:28,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916799199] [2023-02-18 02:10:28,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916799199] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 02:10:28,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 02:10:28,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 44 [2023-02-18 02:10:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535305579] [2023-02-18 02:10:28,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 02:10:28,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-18 02:10:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 02:10:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-18 02:10:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1160, Unknown=21, NotChecked=390, Total=1892 [2023-02-18 02:10:28,441 INFO L87 Difference]: Start difference. First operand 871 states and 1245 transitions. Second operand has 44 states, 42 states have (on average 1.880952380952381) internal successors, (79), 37 states have internal predecessors, (79), 21 states have call successors, (73), 3 states have call predecessors, (73), 4 states have return successors, (72), 23 states have call predecessors, (72), 20 states have call successors, (72) [2023-02-18 02:10:30,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:32,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:35,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:37,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:39,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:40,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:43,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:48,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:50,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:52,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:54,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:56,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:10:58,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:01,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:03,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:05,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:08,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:12,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:15,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:17,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:20,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:22,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:24,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:26,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:28,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:31,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:11:36,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:39,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:41,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:42,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:47,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:49,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:52,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:54,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:55,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:57,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:11:59,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:03,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:05,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:08,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:10,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:12,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:14,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:16,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:21,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:24,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:26,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:27,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:30,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:32,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:12:37,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:40,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:42,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:44,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:48,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:50,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:52,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:12:54,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:13:19,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:13:23,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:13:25,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:13:27,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:13:30,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:13:35,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:13:38,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:13:43,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:13:45,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:13:49,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:13:51,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:13:53,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:13:55,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:14:02,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:04,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:14:07,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:09,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:14:11,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-18 02:14:14,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:19,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:21,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:23,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:32,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:41,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:43,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:45,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 02:14:47,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []