./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.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 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 04:50:15,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 04:50:15,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 04:50:15,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 04:50:15,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 04:50:15,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 04:50:15,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 04:50:15,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 04:50:15,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 04:50:15,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 04:50:15,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 04:50:15,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 04:50:15,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 04:50:15,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 04:50:15,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 04:50:15,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 04:50:15,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 04:50:15,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 04:50:15,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 04:50:15,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 04:50:15,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 04:50:15,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 04:50:15,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 04:50:15,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 04:50:15,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 04:50:15,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 04:50:15,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 04:50:15,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 04:50:15,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 04:50:15,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 04:50:15,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 04:50:15,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 04:50:15,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 04:50:15,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 04:50:15,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 04:50:15,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 04:50:15,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 04:50:15,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 04:50:15,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 04:50:15,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 04:50:15,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 04:50:15,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 04:50:15,359 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 04:50:15,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 04:50:15,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 04:50:15,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 04:50:15,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 04:50:15,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 04:50:15,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 04:50:15,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 04:50:15,362 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 04:50:15,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 04:50:15,363 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 04:50:15,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 04:50:15,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 04:50:15,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 04:50:15,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 04:50:15,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 04:50:15,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 04:50:15,364 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 04:50:15,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 04:50:15,364 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 04:50:15,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 04:50:15,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 04:50:15,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 04:50:15,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 04:50:15,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 04:50:15,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 04:50:15,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 04:50:15,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 04:50:15,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 04:50:15,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 04:50:15,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 04:50:15,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 04:50:15,366 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 04:50:15,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 04:50:15,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 04:50:15,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 [2023-02-17 04:50:15,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 04:50:15,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 04:50:15,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 04:50:15,629 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 04:50:15,641 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 04:50:15,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2023-02-17 04:50:16,776 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 04:50:16,943 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 04:50:16,943 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2023-02-17 04:50:16,948 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639b6e161/c487b63912244602883f2eb72c397a92/FLAG929c1e02f [2023-02-17 04:50:16,960 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639b6e161/c487b63912244602883f2eb72c397a92 [2023-02-17 04:50:16,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 04:50:16,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 04:50:16,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 04:50:16,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 04:50:16,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 04:50:16,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:50:16" (1/1) ... [2023-02-17 04:50:16,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb0cf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:16, skipping insertion in model container [2023-02-17 04:50:16,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:50:16" (1/1) ... [2023-02-17 04:50:16,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 04:50:16,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 04:50:17,097 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/array-programs/partial_mod_count_limited_base.c[334,347] [2023-02-17 04:50:17,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:50:17,123 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 04:50:17,133 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/array-programs/partial_mod_count_limited_base.c[334,347] [2023-02-17 04:50:17,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:50:17,151 INFO L208 MainTranslator]: Completed translation [2023-02-17 04:50:17,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17 WrapperNode [2023-02-17 04:50:17,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 04:50:17,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 04:50:17,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 04:50:17,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 04:50:17,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,188 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2023-02-17 04:50:17,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 04:50:17,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 04:50:17,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 04:50:17,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 04:50:17,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 04:50:17,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 04:50:17,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 04:50:17,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 04:50:17,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (1/1) ... [2023-02-17 04:50:17,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 04:50:17,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:17,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 04:50:17,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 04:50:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 04:50:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 04:50:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 04:50:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 04:50:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 04:50:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 04:50:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 04:50:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 04:50:17,339 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 04:50:17,341 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 04:50:17,501 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 04:50:17,505 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 04:50:17,506 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 04:50:17,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:50:17 BoogieIcfgContainer [2023-02-17 04:50:17,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 04:50:17,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 04:50:17,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 04:50:17,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 04:50:17,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 04:50:16" (1/3) ... [2023-02-17 04:50:17,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bb4ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 04:50:17, skipping insertion in model container [2023-02-17 04:50:17,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:50:17" (2/3) ... [2023-02-17 04:50:17,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bb4ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 04:50:17, skipping insertion in model container [2023-02-17 04:50:17,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:50:17" (3/3) ... [2023-02-17 04:50:17,513 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2023-02-17 04:50:17,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 04:50:17,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 04:50:17,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 04:50:17,557 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;@78c99a3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 04:50:17,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 04:50:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 04:50:17,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:17,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:17,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1939796378, now seen corresponding path program 1 times [2023-02-17 04:50:17,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:17,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376276053] [2023-02-17 04:50:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:17,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:50:17,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:17,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376276053] [2023-02-17 04:50:17,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376276053] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:50:17,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:50:17,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 04:50:17,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002791814] [2023-02-17 04:50:17,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:50:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 04:50:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 04:50:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 04:50:17,788 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:17,802 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-17 04:50:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 04:50:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-17 04:50:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:17,810 INFO L225 Difference]: With dead ends: 41 [2023-02-17 04:50:17,810 INFO L226 Difference]: Without dead ends: 18 [2023-02-17 04:50:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 04:50:17,817 INFO L413 NwaCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:17,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:50:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-17 04:50:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-17 04:50:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-02-17 04:50:17,842 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2023-02-17 04:50:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:17,843 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-17 04:50:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-02-17 04:50:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 04:50:17,845 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:17,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 04:50:17,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -54935082, now seen corresponding path program 1 times [2023-02-17 04:50:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:17,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977142701] [2023-02-17 04:50:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:50:17,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:17,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977142701] [2023-02-17 04:50:17,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977142701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:50:17,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:50:17,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 04:50:17,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339571163] [2023-02-17 04:50:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:50:17,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 04:50:17,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:50:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:50:17,974 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:18,057 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-02-17 04:50:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 04:50:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-17 04:50:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:18,058 INFO L225 Difference]: With dead ends: 45 [2023-02-17 04:50:18,059 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 04:50:18,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:50:18,060 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:18,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:50:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 04:50:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2023-02-17 04:50:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-02-17 04:50:18,065 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2023-02-17 04:50:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:18,065 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-02-17 04:50:18,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-02-17 04:50:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 04:50:18,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:18,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:18,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 04:50:18,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1485448361, now seen corresponding path program 1 times [2023-02-17 04:50:18,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:18,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164400090] [2023-02-17 04:50:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:18,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:50:18,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:18,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164400090] [2023-02-17 04:50:18,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164400090] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:50:18,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:50:18,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 04:50:18,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454346058] [2023-02-17 04:50:18,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:50:18,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 04:50:18,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:18,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 04:50:18,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:50:18,256 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:18,306 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2023-02-17 04:50:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 04:50:18,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-17 04:50:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:18,307 INFO L225 Difference]: With dead ends: 45 [2023-02-17 04:50:18,309 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 04:50:18,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 04:50:18,310 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:18,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:50:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 04:50:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2023-02-17 04:50:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-17 04:50:18,318 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2023-02-17 04:50:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:18,319 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-17 04:50:18,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-17 04:50:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 04:50:18,321 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:18,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:18,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 04:50:18,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2129460565, now seen corresponding path program 1 times [2023-02-17 04:50:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:18,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978731377] [2023-02-17 04:50:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 04:50:18,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:18,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978731377] [2023-02-17 04:50:18,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978731377] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:50:18,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:50:18,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:50:18,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162919031] [2023-02-17 04:50:18,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:50:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 04:50:18,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:50:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:50:18,407 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:18,433 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2023-02-17 04:50:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 04:50:18,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-17 04:50:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:18,435 INFO L225 Difference]: With dead ends: 34 [2023-02-17 04:50:18,436 INFO L226 Difference]: Without dead ends: 32 [2023-02-17 04:50:18,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:50:18,437 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 45 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:50:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-17 04:50:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-02-17 04:50:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-02-17 04:50:18,446 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2023-02-17 04:50:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:18,446 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-02-17 04:50:18,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-02-17 04:50:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 04:50:18,447 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:18,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:18,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 04:50:18,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2129520147, now seen corresponding path program 1 times [2023-02-17 04:50:18,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:18,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079403308] [2023-02-17 04:50:18,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:18,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 04:50:18,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:18,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079403308] [2023-02-17 04:50:18,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079403308] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:50:18,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:50:18,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 04:50:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851621066] [2023-02-17 04:50:18,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:50:18,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 04:50:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:18,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 04:50:18,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:50:18,517 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:18,545 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2023-02-17 04:50:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 04:50:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-17 04:50:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:18,546 INFO L225 Difference]: With dead ends: 40 [2023-02-17 04:50:18,560 INFO L226 Difference]: Without dead ends: 38 [2023-02-17 04:50:18,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 04:50:18,562 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:18,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:50:18,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-17 04:50:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2023-02-17 04:50:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-17 04:50:18,568 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2023-02-17 04:50:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:18,569 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-17 04:50:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-17 04:50:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 04:50:18,570 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:18,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 04:50:18,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash -593145504, now seen corresponding path program 1 times [2023-02-17 04:50:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:18,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037983304] [2023-02-17 04:50:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037983304] [2023-02-17 04:50:18,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037983304] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:50:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083970538] [2023-02-17 04:50:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:18,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:18,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:18,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:50:18,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 04:50:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:18,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:50:18,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:50:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:18,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:50:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:18,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083970538] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:50:18,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:50:18,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-02-17 04:50:18,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256296201] [2023-02-17 04:50:18,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:50:18,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 04:50:18,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 04:50:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-17 04:50:18,918 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:19,006 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2023-02-17 04:50:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 04:50:19,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-17 04:50:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:19,007 INFO L225 Difference]: With dead ends: 123 [2023-02-17 04:50:19,007 INFO L226 Difference]: Without dead ends: 97 [2023-02-17 04:50:19,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-17 04:50:19,011 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 117 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:19,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 50 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:50:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-17 04:50:19,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 46. [2023-02-17 04:50:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-02-17 04:50:19,027 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 22 [2023-02-17 04:50:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:19,028 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-02-17 04:50:19,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-02-17 04:50:19,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 04:50:19,029 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:19,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:19,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 04:50:19,233 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,SelfDestructingSolverStorable5 [2023-02-17 04:50:19,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1836734985, now seen corresponding path program 1 times [2023-02-17 04:50:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:19,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750431019] [2023-02-17 04:50:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:19,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:50:19,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144135598] [2023-02-17 04:50:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:19,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:19,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:19,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:50:19,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 04:50:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:19,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 04:50:19,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:50:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 04:50:19,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 04:50:19,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:19,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750431019] [2023-02-17 04:50:19,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:50:19,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144135598] [2023-02-17 04:50:19,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144135598] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:50:19,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:50:19,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:50:19,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802900704] [2023-02-17 04:50:19,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:50:19,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 04:50:19,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:50:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:50:19,385 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:19,403 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2023-02-17 04:50:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 04:50:19,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-17 04:50:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:19,408 INFO L225 Difference]: With dead ends: 109 [2023-02-17 04:50:19,408 INFO L226 Difference]: Without dead ends: 79 [2023-02-17 04:50:19,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:50:19,409 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:19,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 42 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:50:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-17 04:50:19,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 58. [2023-02-17 04:50:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 57 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-02-17 04:50:19,420 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 37 [2023-02-17 04:50:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:19,421 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-02-17 04:50:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-02-17 04:50:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 04:50:19,422 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:19,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:19,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 04:50:19,628 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,SelfDestructingSolverStorable6 [2023-02-17 04:50:19,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash 467241801, now seen corresponding path program 1 times [2023-02-17 04:50:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:19,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095597873] [2023-02-17 04:50:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-17 04:50:19,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:19,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095597873] [2023-02-17 04:50:19,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095597873] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:50:19,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:50:19,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 04:50:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264299260] [2023-02-17 04:50:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:50:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 04:50:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 04:50:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-17 04:50:19,894 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:19,957 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2023-02-17 04:50:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 04:50:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-17 04:50:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:19,958 INFO L225 Difference]: With dead ends: 93 [2023-02-17 04:50:19,958 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 04:50:19,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-02-17 04:50:19,959 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:19,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 04:50:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 04:50:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2023-02-17 04:50:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2023-02-17 04:50:19,970 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 37 [2023-02-17 04:50:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:19,971 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2023-02-17 04:50:19,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:19,972 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2023-02-17 04:50:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 04:50:19,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:19,974 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 04:50:19,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash -890927985, now seen corresponding path program 2 times [2023-02-17 04:50:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:19,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066372725] [2023-02-17 04:50:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:19,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:19,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:50:19,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197648984] [2023-02-17 04:50:19,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:50:19,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:19,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:19,998 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) [2023-02-17 04:50:20,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 04:50:20,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:50:20,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:50:20,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 04:50:20,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:50:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:20,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:50:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:20,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066372725] [2023-02-17 04:50:20,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:50:20,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197648984] [2023-02-17 04:50:20,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197648984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:50:20,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:50:20,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-17 04:50:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329031355] [2023-02-17 04:50:20,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:50:20,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 04:50:20,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:20,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 04:50:20,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-02-17 04:50:20,174 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:20,325 INFO L93 Difference]: Finished difference Result 318 states and 378 transitions. [2023-02-17 04:50:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 04:50:20,325 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-17 04:50:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:20,329 INFO L225 Difference]: With dead ends: 318 [2023-02-17 04:50:20,329 INFO L226 Difference]: Without dead ends: 279 [2023-02-17 04:50:20,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-02-17 04:50:20,332 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 323 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:20,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 92 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:50:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-02-17 04:50:20,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 108. [2023-02-17 04:50:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1495327102803738) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2023-02-17 04:50:20,362 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 37 [2023-02-17 04:50:20,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:20,362 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2023-02-17 04:50:20,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:20,363 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2023-02-17 04:50:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-17 04:50:20,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:20,366 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:20,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 04:50:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:20,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash -573175961, now seen corresponding path program 3 times [2023-02-17 04:50:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:20,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306282162] [2023-02-17 04:50:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:20,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:50:20,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26075690] [2023-02-17 04:50:20,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 04:50:20,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:20,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:20,609 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) [2023-02-17 04:50:20,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 04:50:20,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 04:50:20,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:50:20,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 04:50:20,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:50:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-17 04:50:20,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:50:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-17 04:50:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:21,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306282162] [2023-02-17 04:50:21,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:50:21,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26075690] [2023-02-17 04:50:21,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26075690] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:50:21,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:50:21,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-17 04:50:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373170522] [2023-02-17 04:50:21,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:50:21,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 04:50:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 04:50:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=240, Unknown=0, NotChecked=0, Total=380 [2023-02-17 04:50:21,010 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 20 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:21,683 INFO L93 Difference]: Finished difference Result 640 states and 782 transitions. [2023-02-17 04:50:21,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-17 04:50:21,684 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-02-17 04:50:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:21,687 INFO L225 Difference]: With dead ends: 640 [2023-02-17 04:50:21,687 INFO L226 Difference]: Without dead ends: 619 [2023-02-17 04:50:21,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=946, Invalid=1604, Unknown=0, NotChecked=0, Total=2550 [2023-02-17 04:50:21,688 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 499 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:21,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 148 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 04:50:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-02-17 04:50:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 222. [2023-02-17 04:50:21,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.1900452488687783) internal successors, (263), 221 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 263 transitions. [2023-02-17 04:50:21,721 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 263 transitions. Word has length 67 [2023-02-17 04:50:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:21,722 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 263 transitions. [2023-02-17 04:50:21,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 263 transitions. [2023-02-17 04:50:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-02-17 04:50:21,727 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:21,727 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:21,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 04:50:21,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:21,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2092796683, now seen corresponding path program 2 times [2023-02-17 04:50:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:21,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857157242] [2023-02-17 04:50:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:50:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:22,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857157242] [2023-02-17 04:50:22,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857157242] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:50:22,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707355221] [2023-02-17 04:50:22,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:50:22,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:22,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:22,235 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) [2023-02-17 04:50:22,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 04:50:22,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:50:22,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:50:22,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 04:50:22,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:50:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:22,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:50:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:22,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707355221] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:50:22,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:50:22,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2023-02-17 04:50:22,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488568165] [2023-02-17 04:50:22,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:50:22,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-17 04:50:22,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-17 04:50:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2023-02-17 04:50:22,643 INFO L87 Difference]: Start difference. First operand 222 states and 263 transitions. Second operand has 43 states, 43 states have (on average 4.674418604651163) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:23,235 INFO L93 Difference]: Finished difference Result 2059 states and 2446 transitions. [2023-02-17 04:50:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-17 04:50:23,236 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.674418604651163) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-02-17 04:50:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:23,241 INFO L225 Difference]: With dead ends: 2059 [2023-02-17 04:50:23,241 INFO L226 Difference]: Without dead ends: 1863 [2023-02-17 04:50:23,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2023-02-17 04:50:23,243 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1076 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:23,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 298 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 04:50:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2023-02-17 04:50:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 317. [2023-02-17 04:50:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.1867088607594938) internal successors, (375), 316 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 375 transitions. [2023-02-17 04:50:23,267 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 375 transitions. Word has length 77 [2023-02-17 04:50:23,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:23,267 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 375 transitions. [2023-02-17 04:50:23,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.674418604651163) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 375 transitions. [2023-02-17 04:50:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-02-17 04:50:23,268 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:23,268 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:23,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 04:50:23,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 04:50:23,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2032886887, now seen corresponding path program 4 times [2023-02-17 04:50:23,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:23,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675893583] [2023-02-17 04:50:23,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:23,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:23,512 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:50:23,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128694366] [2023-02-17 04:50:23,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 04:50:23,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:23,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:23,531 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) [2023-02-17 04:50:23,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 04:50:23,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 04:50:23,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:50:23,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-17 04:50:23,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:50:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:24,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:50:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:50:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:50:24,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675893583] [2023-02-17 04:50:24,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:50:24,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128694366] [2023-02-17 04:50:24,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128694366] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:50:24,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:50:24,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-02-17 04:50:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016500762] [2023-02-17 04:50:24,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:50:24,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-17 04:50:24,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:50:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-17 04:50:24,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=1707, Unknown=0, NotChecked=0, Total=3306 [2023-02-17 04:50:24,940 INFO L87 Difference]: Start difference. First operand 317 states and 375 transitions. Second operand has 58 states, 58 states have (on average 4.810344827586207) internal successors, (279), 57 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:50:26,805 INFO L93 Difference]: Finished difference Result 5184 states and 6208 transitions. [2023-02-17 04:50:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-02-17 04:50:26,806 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.810344827586207) internal successors, (279), 57 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-02-17 04:50:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:50:26,817 INFO L225 Difference]: With dead ends: 5184 [2023-02-17 04:50:26,817 INFO L226 Difference]: Without dead ends: 4943 [2023-02-17 04:50:26,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3165, Invalid=3975, Unknown=0, NotChecked=0, Total=7140 [2023-02-17 04:50:26,821 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2722 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 04:50:26,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 472 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 04:50:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2023-02-17 04:50:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 555. [2023-02-17 04:50:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.1570397111913358) internal successors, (641), 554 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:26,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 641 transitions. [2023-02-17 04:50:26,898 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 641 transitions. Word has length 147 [2023-02-17 04:50:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:50:26,899 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 641 transitions. [2023-02-17 04:50:26,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.810344827586207) internal successors, (279), 57 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:50:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 641 transitions. [2023-02-17 04:50:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-02-17 04:50:26,901 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:50:26,901 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 53, 53, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:50:26,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 04:50:27,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:27,107 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:50:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:50:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash -42035417, now seen corresponding path program 5 times [2023-02-17 04:50:27,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:50:27,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018285987] [2023-02-17 04:50:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:50:27,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:50:27,138 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:50:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555380602] [2023-02-17 04:50:27,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 04:50:27,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:50:27,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:50:27,140 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) [2023-02-17 04:50:27,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 04:52:07,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2023-02-17 04:52:07,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:52:07,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-17 04:52:07,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:52:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7213 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:52:08,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:52:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7213 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 04:52:10,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:52:10,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018285987] [2023-02-17 04:52:10,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 04:52:10,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555380602] [2023-02-17 04:52:10,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555380602] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:52:10,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 04:52:10,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 113 [2023-02-17 04:52:10,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439561608] [2023-02-17 04:52:10,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 04:52:10,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-02-17 04:52:10,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:52:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-02-17 04:52:10,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6331, Invalid=6551, Unknown=0, NotChecked=0, Total=12882 [2023-02-17 04:52:10,010 INFO L87 Difference]: Start difference. First operand 555 states and 641 transitions. Second operand has 114 states, 114 states have (on average 4.9035087719298245) internal successors, (559), 113 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:52:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:52:18,106 INFO L93 Difference]: Finished difference Result 11515 states and 13814 transitions. [2023-02-17 04:52:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-02-17 04:52:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 4.9035087719298245) internal successors, (559), 113 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2023-02-17 04:52:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:52:18,131 INFO L225 Difference]: With dead ends: 11515 [2023-02-17 04:52:18,132 INFO L226 Difference]: Without dead ends: 11103 [2023-02-17 04:52:18,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6105 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12601, Invalid=15791, Unknown=0, NotChecked=0, Total=28392 [2023-02-17 04:52:18,139 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5287 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5287 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-17 04:52:18,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5287 Valid, 950 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-17 04:52:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2023-02-17 04:52:18,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 1031. [2023-02-17 04:52:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 1.1388349514563108) internal successors, (1173), 1030 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:52:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1173 transitions. [2023-02-17 04:52:18,408 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1173 transitions. Word has length 287 [2023-02-17 04:52:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:52:18,408 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1173 transitions. [2023-02-17 04:52:18,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 4.9035087719298245) internal successors, (559), 113 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:52:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1173 transitions. [2023-02-17 04:52:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-02-17 04:52:18,419 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:52:18,419 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 109, 109, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:52:18,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 04:52:18,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:52:18,643 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 04:52:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:52:18,644 INFO L85 PathProgramCache]: Analyzing trace with hash -538616665, now seen corresponding path program 6 times [2023-02-17 04:52:18,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:52:18,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331978325] [2023-02-17 04:52:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:52:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:52:18,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 04:52:18,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249532430] [2023-02-17 04:52:18,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 04:52:18,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:52:18,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:52:18,709 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) [2023-02-17 04:52:18,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process