/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:02:52,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:02:52,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:02:52,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:02:52,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:02:52,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:02:52,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:02:52,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:02:52,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:02:52,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:02:52,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:02:52,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:02:52,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:02:52,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:02:52,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:02:52,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:02:52,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:02:52,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:02:52,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:02:52,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:02:52,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:02:52,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:02:52,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:02:52,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:02:52,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:02:52,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:02:52,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:02:52,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:02:52,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:02:52,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:02:52,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:02:52,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:02:52,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:02:52,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:02:52,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:02:52,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:02:52,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:02:52,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:02:52,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:02:52,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:02:52,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:02:52,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:02:52,263 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:02:52,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:02:52,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:02:52,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:02:52,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:02:52,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:02:52,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:02:52,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:02:52,266 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:02:52,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:02:52,267 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:02:52,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:02:52,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:02:52,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:02:52,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:02:52,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:02:52,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:02:52,268 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:02:52,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:02:52,268 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:02:52,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:02:52,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:02:52,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:02:52,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:02:52,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:02:52,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:02:52,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:02:52,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:02:52,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:02:52,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:02:52,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:02:52,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:02:52,270 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:02:52,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:02:52,270 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:02:52,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:02:52,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:02:52,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:02:52,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:02:52,548 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:02:52,548 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:02:52,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2023-04-02 05:02:53,802 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:02:54,007 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:02:54,007 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2023-04-02 05:02:54,020 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb04b0ce/b61165393e034ba59f623207f848796b/FLAGa5cebd666 [2023-04-02 05:02:54,038 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb04b0ce/b61165393e034ba59f623207f848796b [2023-04-02 05:02:54,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:02:54,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:02:54,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:02:54,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:02:54,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:02:54,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b91709a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54, skipping insertion in model container [2023-04-02 05:02:54,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:02:54,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:02:54,258 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c[12968,12981] [2023-04-02 05:02:54,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:02:54,277 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:02:54,321 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c[12968,12981] [2023-04-02 05:02:54,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:02:54,337 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:02:54,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54 WrapperNode [2023-04-02 05:02:54,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:02:54,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:02:54,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:02:54,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:02:54,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:02:54,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:02:54,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:02:54,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:02:54,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (1/1) ... [2023-04-02 05:02:54,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:02:54,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:02:54,449 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) [2023-04-02 05:02:54,463 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 [2023-04-02 05:02:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:02:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:02:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:02:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:02:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:02:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:02:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:02:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:02:54,657 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:02:54,659 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:02:55,328 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:02:55,336 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:02:55,336 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:02:55,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:02:55 BoogieIcfgContainer [2023-04-02 05:02:55,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:02:55,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:02:55,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:02:55,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:02:55,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:02:54" (1/3) ... [2023-04-02 05:02:55,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3f9b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:02:55, skipping insertion in model container [2023-04-02 05:02:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:02:54" (2/3) ... [2023-04-02 05:02:55,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3f9b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:02:55, skipping insertion in model container [2023-04-02 05:02:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:02:55" (3/3) ... [2023-04-02 05:02:55,347 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2023-04-02 05:02:55,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:02:55,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:02:55,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:02:55,427 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;@3375a795, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:02:55,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:02:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 132 states have (on average 1.7196969696969697) internal successors, (227), 134 states have internal predecessors, (227), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 05:02:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:02:55,451 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:02:55,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:02:55,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:02:55,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:02:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1409628654, now seen corresponding path program 1 times [2023-04-02 05:02:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:02:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437226850] [2023-04-02 05:02:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:02:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:02:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:02:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:02:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:02:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:02:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:02:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:02:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:02:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:02:56,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:02:56,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437226850] [2023-04-02 05:02:56,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437226850] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:02:56,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:02:56,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:02:56,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338961688] [2023-04-02 05:02:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:02:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:02:56,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:02:56,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:02:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:02:56,259 INFO L87 Difference]: Start difference. First operand has 152 states, 132 states have (on average 1.7196969696969697) internal successors, (227), 134 states have internal predecessors, (227), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:02:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:02:57,255 INFO L93 Difference]: Finished difference Result 242 states and 387 transitions. [2023-04-02 05:02:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:02:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2023-04-02 05:02:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:02:57,266 INFO L225 Difference]: With dead ends: 242 [2023-04-02 05:02:57,266 INFO L226 Difference]: Without dead ends: 156 [2023-04-02 05:02:57,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:02:57,272 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 281 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:02:57,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 41 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:02:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-04-02 05:02:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2023-04-02 05:02:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 130 states have internal predecessors, (220), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:02:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 237 transitions. [2023-04-02 05:02:57,354 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 237 transitions. Word has length 62 [2023-04-02 05:02:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:02:57,356 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 237 transitions. [2023-04-02 05:02:57,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:02:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 237 transitions. [2023-04-02 05:02:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:02:57,363 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:02:57,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:02:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:02:57,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:02:57,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:02:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 565623152, now seen corresponding path program 1 times [2023-04-02 05:02:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:02:57,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863424270] [2023-04-02 05:02:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:02:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:02:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:02:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:02:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:02:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:02:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:02:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:02:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:02:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:02:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:02:57,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:02:57,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863424270] [2023-04-02 05:02:57,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863424270] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:02:57,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:02:57,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:02:57,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467684474] [2023-04-02 05:02:57,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:02:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:02:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:02:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:02:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:02:57,915 INFO L87 Difference]: Start difference. First operand 147 states and 237 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:02:59,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:02:59,753 INFO L93 Difference]: Finished difference Result 240 states and 379 transitions. [2023-04-02 05:02:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:02:59,753 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2023-04-02 05:02:59,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:02:59,755 INFO L225 Difference]: With dead ends: 240 [2023-04-02 05:02:59,755 INFO L226 Difference]: Without dead ends: 156 [2023-04-02 05:02:59,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:02:59,757 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 290 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:02:59,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 122 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:02:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-04-02 05:02:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2023-04-02 05:02:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 129 states have (on average 1.496124031007752) internal successors, (193), 130 states have internal predecessors, (193), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:02:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 210 transitions. [2023-04-02 05:02:59,779 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 210 transitions. Word has length 62 [2023-04-02 05:02:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:02:59,780 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 210 transitions. [2023-04-02 05:02:59,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:02:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 210 transitions. [2023-04-02 05:02:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 05:02:59,782 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:02:59,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:02:59,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:02:59,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:02:59,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:02:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1895131975, now seen corresponding path program 1 times [2023-04-02 05:02:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:02:59,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486243427] [2023-04-02 05:02:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:02:59,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:02:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:03:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:03:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486243427] [2023-04-02 05:03:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486243427] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:00,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:00,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:03:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687505522] [2023-04-02 05:03:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:00,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:03:00,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:00,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:03:00,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:03:00,430 INFO L87 Difference]: Start difference. First operand 147 states and 210 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 9 states have internal predecessors, (72), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:05,560 INFO L93 Difference]: Finished difference Result 918 states and 1415 transitions. [2023-04-02 05:03:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-02 05:03:05,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 9 states have internal predecessors, (72), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2023-04-02 05:03:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:05,567 INFO L225 Difference]: With dead ends: 918 [2023-04-02 05:03:05,567 INFO L226 Difference]: Without dead ends: 840 [2023-04-02 05:03:05,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=724, Invalid=2816, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 05:03:05,572 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 2105 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:05,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2114 Valid, 131 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 05:03:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-04-02 05:03:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 523. [2023-04-02 05:03:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 449 states have (on average 1.5924276169265033) internal successors, (715), 456 states have internal predecessors, (715), 34 states have call successors, (34), 34 states have call predecessors, (34), 39 states have return successors, (55), 33 states have call predecessors, (55), 33 states have call successors, (55) [2023-04-02 05:03:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 804 transitions. [2023-04-02 05:03:05,670 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 804 transitions. Word has length 88 [2023-04-02 05:03:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:05,671 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 804 transitions. [2023-04-02 05:03:05,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 9 states have internal predecessors, (72), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 804 transitions. [2023-04-02 05:03:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 05:03:05,673 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:05,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:05,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:03:05,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:05,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1348372586, now seen corresponding path program 1 times [2023-04-02 05:03:05,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:05,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744058007] [2023-04-02 05:03:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:05,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:03:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:03:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:06,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744058007] [2023-04-02 05:03:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744058007] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:06,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:06,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:03:06,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290499234] [2023-04-02 05:03:06,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:06,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:03:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:03:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:03:06,097 INFO L87 Difference]: Start difference. First operand 523 states and 804 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:09,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:09,114 INFO L93 Difference]: Finished difference Result 1773 states and 2736 transitions. [2023-04-02 05:03:09,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 05:03:09,114 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2023-04-02 05:03:09,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:09,126 INFO L225 Difference]: With dead ends: 1773 [2023-04-02 05:03:09,126 INFO L226 Difference]: Without dead ends: 1319 [2023-04-02 05:03:09,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:03:09,141 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 955 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:09,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 112 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:03:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-04-02 05:03:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1170. [2023-04-02 05:03:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 992 states have (on average 1.592741935483871) internal successors, (1580), 1013 states have internal predecessors, (1580), 79 states have call successors, (79), 79 states have call predecessors, (79), 98 states have return successors, (150), 78 states have call predecessors, (150), 78 states have call successors, (150) [2023-04-02 05:03:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1809 transitions. [2023-04-02 05:03:09,283 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1809 transitions. Word has length 89 [2023-04-02 05:03:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:09,283 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1809 transitions. [2023-04-02 05:03:09,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:09,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1809 transitions. [2023-04-02 05:03:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:03:09,285 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:09,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:09,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:03:09,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:09,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1527015774, now seen corresponding path program 1 times [2023-04-02 05:03:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:09,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451697291] [2023-04-02 05:03:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:03:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:03:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:09,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451697291] [2023-04-02 05:03:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451697291] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:09,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:09,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:03:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220068141] [2023-04-02 05:03:09,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:09,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:03:09,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:09,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:03:09,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:03:09,687 INFO L87 Difference]: Start difference. First operand 1170 states and 1809 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:12,837 INFO L93 Difference]: Finished difference Result 7287 states and 11244 transitions. [2023-04-02 05:03:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 05:03:12,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2023-04-02 05:03:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:12,872 INFO L225 Difference]: With dead ends: 7287 [2023-04-02 05:03:12,872 INFO L226 Difference]: Without dead ends: 6186 [2023-04-02 05:03:12,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:03:12,881 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1239 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:12,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 103 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:03:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2023-04-02 05:03:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 5473. [2023-04-02 05:03:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 4600 states have (on average 1.5908695652173912) internal successors, (7318), 4716 states have internal predecessors, (7318), 379 states have call successors, (379), 379 states have call predecessors, (379), 493 states have return successors, (819), 378 states have call predecessors, (819), 378 states have call successors, (819) [2023-04-02 05:03:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 8516 transitions. [2023-04-02 05:03:13,527 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 8516 transitions. Word has length 90 [2023-04-02 05:03:13,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:13,527 INFO L495 AbstractCegarLoop]: Abstraction has 5473 states and 8516 transitions. [2023-04-02 05:03:13,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 8516 transitions. [2023-04-02 05:03:13,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:03:13,529 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:13,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:13,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:03:13,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:13,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1576664927, now seen corresponding path program 1 times [2023-04-02 05:03:13,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:13,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342295749] [2023-04-02 05:03:13,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:13,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:03:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:03:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:13,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342295749] [2023-04-02 05:03:13,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342295749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:13,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:13,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:03:13,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483043077] [2023-04-02 05:03:13,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:03:13,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:03:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:03:13,967 INFO L87 Difference]: Start difference. First operand 5473 states and 8516 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:18,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:18,304 INFO L93 Difference]: Finished difference Result 31508 states and 48523 transitions. [2023-04-02 05:03:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 05:03:18,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2023-04-02 05:03:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:18,464 INFO L225 Difference]: With dead ends: 31508 [2023-04-02 05:03:18,465 INFO L226 Difference]: Without dead ends: 26104 [2023-04-02 05:03:18,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:03:18,489 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1013 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:18,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 112 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 05:03:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26104 states. [2023-04-02 05:03:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26104 to 23075. [2023-04-02 05:03:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23075 states, 19279 states have (on average 1.578453239275896) internal successors, (30431), 19858 states have internal predecessors, (30431), 1609 states have call successors, (1609), 1609 states have call predecessors, (1609), 2186 states have return successors, (3828), 1608 states have call predecessors, (3828), 1608 states have call successors, (3828) [2023-04-02 05:03:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23075 states to 23075 states and 35868 transitions. [2023-04-02 05:03:21,038 INFO L78 Accepts]: Start accepts. Automaton has 23075 states and 35868 transitions. Word has length 91 [2023-04-02 05:03:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:21,039 INFO L495 AbstractCegarLoop]: Abstraction has 23075 states and 35868 transitions. [2023-04-02 05:03:21,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:03:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 23075 states and 35868 transitions. [2023-04-02 05:03:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 05:03:21,042 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:21,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:21,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:03:21,042 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:21,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1511824607, now seen corresponding path program 1 times [2023-04-02 05:03:21,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:21,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679802482] [2023-04-02 05:03:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:21,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:03:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:03:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:03:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:21,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:21,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679802482] [2023-04-02 05:03:21,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679802482] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:21,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:21,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:03:21,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183259032] [2023-04-02 05:03:21,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:21,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:03:21,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:03:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:03:21,536 INFO L87 Difference]: Start difference. First operand 23075 states and 35868 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:03:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:28,665 INFO L93 Difference]: Finished difference Result 42071 states and 65011 transitions. [2023-04-02 05:03:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-04-02 05:03:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 93 [2023-04-02 05:03:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:28,793 INFO L225 Difference]: With dead ends: 42071 [2023-04-02 05:03:28,794 INFO L226 Difference]: Without dead ends: 28822 [2023-04-02 05:03:28,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1617 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=854, Invalid=3976, Unknown=0, NotChecked=0, Total=4830 [2023-04-02 05:03:28,831 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2763 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:28,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2777 Valid, 152 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 05:03:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28822 states. [2023-04-02 05:03:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28822 to 23455. [2023-04-02 05:03:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 19608 states have (on average 1.5786923704610363) internal successors, (30955), 20202 states have internal predecessors, (30955), 1627 states have call successors, (1627), 1627 states have call predecessors, (1627), 2219 states have return successors, (3872), 1626 states have call predecessors, (3872), 1626 states have call successors, (3872) [2023-04-02 05:03:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 36454 transitions. [2023-04-02 05:03:31,350 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 36454 transitions. Word has length 93 [2023-04-02 05:03:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:31,351 INFO L495 AbstractCegarLoop]: Abstraction has 23455 states and 36454 transitions. [2023-04-02 05:03:31,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:03:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 36454 transitions. [2023-04-02 05:03:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 05:03:31,353 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:31,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:31,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:03:31,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:31,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 132572185, now seen corresponding path program 1 times [2023-04-02 05:03:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050510039] [2023-04-02 05:03:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:03:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:03:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050510039] [2023-04-02 05:03:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050510039] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:31,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:03:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696187028] [2023-04-02 05:03:31,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:31,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:03:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:03:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:03:31,815 INFO L87 Difference]: Start difference. First operand 23455 states and 36454 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:03:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:36,891 INFO L93 Difference]: Finished difference Result 74744 states and 116158 transitions. [2023-04-02 05:03:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:03:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 93 [2023-04-02 05:03:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:37,140 INFO L225 Difference]: With dead ends: 74744 [2023-04-02 05:03:37,140 INFO L226 Difference]: Without dead ends: 51358 [2023-04-02 05:03:37,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:03:37,222 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1270 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:37,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 62 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:03:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51358 states. [2023-04-02 05:03:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51358 to 45671. [2023-04-02 05:03:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45671 states, 37818 states have (on average 1.5448199270188798) internal successors, (58422), 39284 states have internal predecessors, (58422), 3194 states have call successors, (3194), 3194 states have call predecessors, (3194), 4658 states have return successors, (9056), 3193 states have call predecessors, (9056), 3193 states have call successors, (9056) [2023-04-02 05:03:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45671 states to 45671 states and 70672 transitions. [2023-04-02 05:03:41,039 INFO L78 Accepts]: Start accepts. Automaton has 45671 states and 70672 transitions. Word has length 93 [2023-04-02 05:03:41,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:41,040 INFO L495 AbstractCegarLoop]: Abstraction has 45671 states and 70672 transitions. [2023-04-02 05:03:41,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:03:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 45671 states and 70672 transitions. [2023-04-02 05:03:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 05:03:41,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:41,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:41,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:03:41,045 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:41,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash 106762768, now seen corresponding path program 1 times [2023-04-02 05:03:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524537218] [2023-04-02 05:03:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:41,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:03:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:03:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:03:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:41,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:41,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524537218] [2023-04-02 05:03:41,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524537218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:41,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:41,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:03:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225940524] [2023-04-02 05:03:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:41,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:03:41,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:03:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:03:41,407 INFO L87 Difference]: Start difference. First operand 45671 states and 70672 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:03:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:47,602 INFO L93 Difference]: Finished difference Result 91202 states and 140205 transitions. [2023-04-02 05:03:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:03:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 94 [2023-04-02 05:03:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:47,884 INFO L225 Difference]: With dead ends: 91202 [2023-04-02 05:03:47,884 INFO L226 Difference]: Without dead ends: 71362 [2023-04-02 05:03:47,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:03:47,941 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1431 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:47,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 97 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:03:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71362 states. [2023-04-02 05:03:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71362 to 64211. [2023-04-02 05:03:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64211 states, 53208 states have (on average 1.5478499473763343) internal successors, (82358), 55304 states have internal predecessors, (82358), 4454 states have call successors, (4454), 4454 states have call predecessors, (4454), 6548 states have return successors, (12428), 4453 states have call predecessors, (12428), 4453 states have call successors, (12428) [2023-04-02 05:03:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64211 states to 64211 states and 99240 transitions. [2023-04-02 05:03:53,429 INFO L78 Accepts]: Start accepts. Automaton has 64211 states and 99240 transitions. Word has length 94 [2023-04-02 05:03:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:53,430 INFO L495 AbstractCegarLoop]: Abstraction has 64211 states and 99240 transitions. [2023-04-02 05:03:53,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:03:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 64211 states and 99240 transitions. [2023-04-02 05:03:53,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 05:03:53,433 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:53,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:53,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:03:53,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:53,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1492966162, now seen corresponding path program 1 times [2023-04-02 05:03:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:53,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914590015] [2023-04-02 05:03:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:03:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:03:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:03:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:03:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:03:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:53,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914590015] [2023-04-02 05:03:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914590015] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:53,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:03:53,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538224245] [2023-04-02 05:03:53,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:53,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:03:53,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:03:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:03:53,809 INFO L87 Difference]: Start difference. First operand 64211 states and 99240 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:03:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:59,972 INFO L93 Difference]: Finished difference Result 102455 states and 157338 transitions. [2023-04-02 05:03:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:03:59,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 94 [2023-04-02 05:03:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:04:00,221 INFO L225 Difference]: With dead ends: 102455 [2023-04-02 05:04:00,222 INFO L226 Difference]: Without dead ends: 61960 [2023-04-02 05:04:00,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:04:00,290 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1079 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:04:00,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 120 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 05:04:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61960 states. [2023-04-02 05:04:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61960 to 55691. [2023-04-02 05:04:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55691 states, 46161 states have (on average 1.5456554234093716) internal successors, (71349), 47980 states have internal predecessors, (71349), 3856 states have call successors, (3856), 3856 states have call predecessors, (3856), 5673 states have return successors, (10691), 3855 states have call predecessors, (10691), 3855 states have call successors, (10691) [2023-04-02 05:04:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55691 states to 55691 states and 85896 transitions. [2023-04-02 05:04:04,628 INFO L78 Accepts]: Start accepts. Automaton has 55691 states and 85896 transitions. Word has length 94 [2023-04-02 05:04:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:04:04,628 INFO L495 AbstractCegarLoop]: Abstraction has 55691 states and 85896 transitions. [2023-04-02 05:04:04,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:04:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 55691 states and 85896 transitions. [2023-04-02 05:04:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 05:04:04,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:04:04,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:04:04,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:04:04,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:04:04,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:04:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1102905329, now seen corresponding path program 1 times [2023-04-02 05:04:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:04:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785955788] [2023-04-02 05:04:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:04:04,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:04:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:04:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:04:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:04:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:04:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:04:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:04:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:04:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:04:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:04:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785955788] [2023-04-02 05:04:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785955788] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:04:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:04:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:04:05,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319163049] [2023-04-02 05:04:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:04:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:04:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:04:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:04:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:04:05,178 INFO L87 Difference]: Start difference. First operand 55691 states and 85896 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:04:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:04:11,245 INFO L93 Difference]: Finished difference Result 138253 states and 211368 transitions. [2023-04-02 05:04:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 05:04:11,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 95 [2023-04-02 05:04:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:04:11,595 INFO L225 Difference]: With dead ends: 138253 [2023-04-02 05:04:11,596 INFO L226 Difference]: Without dead ends: 82631 [2023-04-02 05:04:11,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:04:11,662 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 526 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:04:11,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 67 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:04:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82631 states. [2023-04-02 05:04:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82631 to 69975. [2023-04-02 05:04:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69975 states, 58580 states have (on average 1.5581427108228063) internal successors, (91276), 60992 states have internal predecessors, (91276), 4492 states have call successors, (4492), 4492 states have call predecessors, (4492), 6902 states have return successors, (13780), 4491 states have call predecessors, (13780), 4491 states have call successors, (13780) [2023-04-02 05:04:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69975 states to 69975 states and 109548 transitions. [2023-04-02 05:04:16,698 INFO L78 Accepts]: Start accepts. Automaton has 69975 states and 109548 transitions. Word has length 95 [2023-04-02 05:04:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:04:16,699 INFO L495 AbstractCegarLoop]: Abstraction has 69975 states and 109548 transitions. [2023-04-02 05:04:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:04:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 69975 states and 109548 transitions. [2023-04-02 05:04:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 05:04:16,703 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:04:16,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:04:16,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:04:16,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:04:16,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:04:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash 729819931, now seen corresponding path program 1 times [2023-04-02 05:04:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:04:16,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291826663] [2023-04-02 05:04:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:04:16,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:04:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:04:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:04:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:04:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:04:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:04:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:04:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:04:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:04:17,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:04:17,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291826663] [2023-04-02 05:04:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291826663] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:04:17,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:04:17,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:04:17,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125303626] [2023-04-02 05:04:17,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:04:17,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:04:17,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:04:17,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:04:17,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:04:17,005 INFO L87 Difference]: Start difference. First operand 69975 states and 109548 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:04:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:04:28,266 INFO L93 Difference]: Finished difference Result 223911 states and 357660 transitions. [2023-04-02 05:04:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:04:28,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 95 [2023-04-02 05:04:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:04:28,858 INFO L225 Difference]: With dead ends: 223911 [2023-04-02 05:04:28,858 INFO L226 Difference]: Without dead ends: 154005 [2023-04-02 05:04:28,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:04:28,979 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 979 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:04:28,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 100 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:04:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154005 states. [2023-04-02 05:04:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154005 to 142883. [2023-04-02 05:04:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142883 states, 119325 states have (on average 1.5181311544102243) internal successors, (181151), 124242 states have internal predecessors, (181151), 9321 states have call successors, (9321), 9321 states have call predecessors, (9321), 14236 states have return successors, (28808), 9321 states have call predecessors, (28808), 9320 states have call successors, (28808) [2023-04-02 05:04:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142883 states to 142883 states and 219280 transitions. [2023-04-02 05:04:40,209 INFO L78 Accepts]: Start accepts. Automaton has 142883 states and 219280 transitions. Word has length 95 [2023-04-02 05:04:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:04:40,209 INFO L495 AbstractCegarLoop]: Abstraction has 142883 states and 219280 transitions. [2023-04-02 05:04:40,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:04:40,210 INFO L276 IsEmpty]: Start isEmpty. Operand 142883 states and 219280 transitions. [2023-04-02 05:04:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 05:04:40,214 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:04:40,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:04:40,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:04:40,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:04:40,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:04:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1514163367, now seen corresponding path program 1 times [2023-04-02 05:04:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:04:40,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681980166] [2023-04-02 05:04:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:04:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:04:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:04:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:04:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:04:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:04:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:04:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:04:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:04:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:04:40,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:04:40,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681980166] [2023-04-02 05:04:40,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681980166] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:04:40,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:04:40,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:04:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541437516] [2023-04-02 05:04:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:04:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:04:40,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:04:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:04:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:04:40,667 INFO L87 Difference]: Start difference. First operand 142883 states and 219280 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:04:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:04:55,975 INFO L93 Difference]: Finished difference Result 221668 states and 339314 transitions. [2023-04-02 05:04:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-02 05:04:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 95 [2023-04-02 05:04:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted.