/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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:47:46,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:47:46,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:47:46,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:47:46,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:47:46,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:47:46,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:47:46,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:47:46,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:47:46,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:47:46,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:47:46,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:47:46,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:47:46,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:47:46,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:47:46,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:47:46,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:47:46,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:47:46,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:47:46,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:47:46,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:47:46,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:47:46,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:47:46,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:47:46,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:47:46,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:47:46,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:47:46,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:47:46,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:47:46,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:47:46,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:47:46,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:47:46,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:47:46,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:47:46,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:47:46,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:47:46,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:47:46,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:47:46,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:47:46,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:47:46,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:47:46,464 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 05:47:46,495 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:47:46,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:47:46,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:47:46,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:47:46,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:47:46,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:47:46,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:47:46,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:47:46,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:47:46,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:47:46,499 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:47:46,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:47:46,499 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:47:46,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:47:46,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:47:46,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:47:46,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:47:46,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:47:46,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:47:46,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:47:46,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:47:46,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:47:46,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:47:46,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:47:46,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:47:46,501 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:47:46,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:47:46,501 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:47:46,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:47:46,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:47:46,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:47:46,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:47:46,696 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:47:46,697 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:47:46,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 05:47:48,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:47:48,311 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:47:48,312 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 05:47:48,339 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6f559569/c9a54ecd68ea44af910f183273eca00f/FLAG90cab1d7e [2023-04-02 05:47:48,351 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6f559569/c9a54ecd68ea44af910f183273eca00f [2023-04-02 05:47:48,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:47:48,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:47:48,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:47:48,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:47:48,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:47:48,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:47:48" (1/1) ... [2023-04-02 05:47:48,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c9c356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:48, skipping insertion in model container [2023-04-02 05:47:48,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:47:48" (1/1) ... [2023-04-02 05:47:48,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:47:48,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:47:48,691 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2023-04-02 05:47:48,700 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2023-04-02 05:47:48,713 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2023-04-02 05:47:48,722 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2023-04-02 05:47:48,776 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2023-04-02 05:47:48,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:47:48,850 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:47:48,969 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2023-04-02 05:47:48,982 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2023-04-02 05:47:49,001 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2023-04-02 05:47:49,024 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2023-04-02 05:47:49,158 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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2023-04-02 05:47:49,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:47:49,215 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:47:49,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49 WrapperNode [2023-04-02 05:47:49,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:47:49,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:47:49,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:47:49,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:47:49,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:47:49,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:47:49,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:47:49,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:47:49,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (1/1) ... [2023-04-02 05:47:49,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:47:49,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:47:49,375 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 05:47:49,399 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 05:47:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:47:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:47:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:47:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:47:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:47:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:47:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:47:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:47:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:47:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:47:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:47:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:47:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:47:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:47:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:47:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:47:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:47:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:47:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:47:49,583 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:47:49,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:47:50,744 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:47:50,768 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:47:50,768 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 05:47:50,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:47:50 BoogieIcfgContainer [2023-04-02 05:47:50,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:47:50,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:47:50,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:47:50,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:47:50,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:47:48" (1/3) ... [2023-04-02 05:47:50,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b394ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:47:50, skipping insertion in model container [2023-04-02 05:47:50,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:47:49" (2/3) ... [2023-04-02 05:47:50,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b394ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:47:50, skipping insertion in model container [2023-04-02 05:47:50,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:47:50" (3/3) ... [2023-04-02 05:47:50,780 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 05:47:50,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:47:50,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-04-02 05:47:50,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:47:50,862 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;@7c829d9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:47:50,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-04-02 05:47:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 388 states, 372 states have (on average 1.825268817204301) internal successors, (679), 383 states have internal predecessors, (679), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 05:47:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 05:47:50,889 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:50,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:50,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:47:50,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1761821289, now seen corresponding path program 1 times [2023-04-02 05:47:50,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171270512] [2023-04-02 05:47:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:51,802 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 05:47:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:51,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171270512] [2023-04-02 05:47:51,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171270512] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:51,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:51,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:47:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245326994] [2023-04-02 05:47:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:51,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:47:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:51,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:47:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:47:51,868 INFO L87 Difference]: Start difference. First operand has 388 states, 372 states have (on average 1.825268817204301) internal successors, (679), 383 states have internal predecessors, (679), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:53,875 INFO L93 Difference]: Finished difference Result 707 states and 1222 transitions. [2023-04-02 05:47:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:47:53,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2023-04-02 05:47:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:53,891 INFO L225 Difference]: With dead ends: 707 [2023-04-02 05:47:53,892 INFO L226 Difference]: Without dead ends: 540 [2023-04-02 05:47:53,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:47:53,898 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 390 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:53,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1224 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 05:47:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-04-02 05:47:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 538. [2023-04-02 05:47:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 530 states have (on average 1.4528301886792452) internal successors, (770), 534 states have internal predecessors, (770), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 773 transitions. [2023-04-02 05:47:54,003 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 773 transitions. Word has length 143 [2023-04-02 05:47:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:54,004 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 773 transitions. [2023-04-02 05:47:54,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 773 transitions. [2023-04-02 05:47:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 05:47:54,008 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:54,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:54,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:47:54,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:47:54,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1423406313, now seen corresponding path program 1 times [2023-04-02 05:47:54,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:54,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619833303] [2023-04-02 05:47:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:54,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:54,461 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 05:47:54,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619833303] [2023-04-02 05:47:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619833303] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:54,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:54,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:47:54,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636015325] [2023-04-02 05:47:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:54,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:47:54,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:47:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:47:54,470 INFO L87 Difference]: Start difference. First operand 538 states and 773 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:55,953 INFO L93 Difference]: Finished difference Result 1069 states and 1578 transitions. [2023-04-02 05:47:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:47:55,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2023-04-02 05:47:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:55,962 INFO L225 Difference]: With dead ends: 1069 [2023-04-02 05:47:55,962 INFO L226 Difference]: Without dead ends: 880 [2023-04-02 05:47:55,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:47:55,965 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 307 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:55,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 959 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:47:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-04-02 05:47:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 878. [2023-04-02 05:47:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 870 states have (on average 1.4689655172413794) internal successors, (1278), 874 states have internal predecessors, (1278), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1281 transitions. [2023-04-02 05:47:56,010 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1281 transitions. Word has length 143 [2023-04-02 05:47:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:56,012 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1281 transitions. [2023-04-02 05:47:56,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1281 transitions. [2023-04-02 05:47:56,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 05:47:56,021 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:56,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:47:56,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:47:56,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1423067689, now seen corresponding path program 1 times [2023-04-02 05:47:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:56,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440129408] [2023-04-02 05:47:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:56,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:56,701 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 05:47:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440129408] [2023-04-02 05:47:56,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440129408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:56,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:56,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:47:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354638684] [2023-04-02 05:47:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:56,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:47:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:47:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:47:56,708 INFO L87 Difference]: Start difference. First operand 878 states and 1281 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:58,581 INFO L93 Difference]: Finished difference Result 2565 states and 3736 transitions. [2023-04-02 05:47:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:47:58,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2023-04-02 05:47:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:58,590 INFO L225 Difference]: With dead ends: 2565 [2023-04-02 05:47:58,590 INFO L226 Difference]: Without dead ends: 1700 [2023-04-02 05:47:58,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:47:58,594 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 1055 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:58,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1414 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:47:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-04-02 05:47:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1664. [2023-04-02 05:47:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1656 states have (on average 1.4553140096618358) internal successors, (2410), 1660 states have internal predecessors, (2410), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2413 transitions. [2023-04-02 05:47:58,694 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2413 transitions. Word has length 143 [2023-04-02 05:47:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:58,695 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2413 transitions. [2023-04-02 05:47:58,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2413 transitions. [2023-04-02 05:47:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:47:58,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:58,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:58,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:47:58,699 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:47:58,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2028096697, now seen corresponding path program 1 times [2023-04-02 05:47:58,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:58,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350711958] [2023-04-02 05:47:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:58,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:58,994 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 05:47:58,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:58,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350711958] [2023-04-02 05:47:58,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350711958] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:58,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:58,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:47:58,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856018514] [2023-04-02 05:47:58,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:58,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:47:58,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:47:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:47:58,996 INFO L87 Difference]: Start difference. First operand 1664 states and 2413 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:00,982 INFO L93 Difference]: Finished difference Result 4946 states and 7169 transitions. [2023-04-02 05:48:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:00,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2023-04-02 05:48:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:00,997 INFO L225 Difference]: With dead ends: 4946 [2023-04-02 05:48:00,998 INFO L226 Difference]: Without dead ends: 3314 [2023-04-02 05:48:01,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:01,003 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 518 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:01,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1571 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 05:48:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2023-04-02 05:48:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 1666. [2023-04-02 05:48:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1658 states have (on average 1.4547647768395657) internal successors, (2412), 1662 states have internal predecessors, (2412), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2415 transitions. [2023-04-02 05:48:01,198 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2415 transitions. Word has length 144 [2023-04-02 05:48:01,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:01,199 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2415 transitions. [2023-04-02 05:48:01,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:01,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2415 transitions. [2023-04-02 05:48:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 05:48:01,202 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:01,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:01,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:48:01,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:01,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:01,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1230569940, now seen corresponding path program 1 times [2023-04-02 05:48:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:01,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738532875] [2023-04-02 05:48:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:01,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:01,538 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 05:48:01,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:01,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738532875] [2023-04-02 05:48:01,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738532875] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:01,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:01,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:01,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831328526] [2023-04-02 05:48:01,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:01,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:01,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:01,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:01,540 INFO L87 Difference]: Start difference. First operand 1666 states and 2415 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:03,582 INFO L93 Difference]: Finished difference Result 4710 states and 6834 transitions. [2023-04-02 05:48:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:03,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2023-04-02 05:48:03,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:03,596 INFO L225 Difference]: With dead ends: 4710 [2023-04-02 05:48:03,596 INFO L226 Difference]: Without dead ends: 3226 [2023-04-02 05:48:03,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:03,601 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 455 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:03,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1462 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:48:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2023-04-02 05:48:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3190. [2023-04-02 05:48:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3182 states have (on average 1.4402891263356379) internal successors, (4583), 3186 states have internal predecessors, (4583), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4586 transitions. [2023-04-02 05:48:03,858 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4586 transitions. Word has length 145 [2023-04-02 05:48:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:03,858 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 4586 transitions. [2023-04-02 05:48:03,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4586 transitions. [2023-04-02 05:48:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 05:48:03,863 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:03,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:03,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:48:03,864 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:03,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1126098129, now seen corresponding path program 1 times [2023-04-02 05:48:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538960787] [2023-04-02 05:48:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:03,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:04,457 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 05:48:04,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:04,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538960787] [2023-04-02 05:48:04,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538960787] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:04,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:04,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:48:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758326911] [2023-04-02 05:48:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:04,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:48:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:48:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:04,459 INFO L87 Difference]: Start difference. First operand 3190 states and 4586 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:06,314 INFO L93 Difference]: Finished difference Result 9154 states and 13129 transitions. [2023-04-02 05:48:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:06,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2023-04-02 05:48:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:06,338 INFO L225 Difference]: With dead ends: 9154 [2023-04-02 05:48:06,338 INFO L226 Difference]: Without dead ends: 5982 [2023-04-02 05:48:06,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:06,348 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1680 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:06,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 1258 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:48:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5982 states. [2023-04-02 05:48:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5982 to 5952. [2023-04-02 05:48:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5944 states have (on average 1.4204239569313593) internal successors, (8443), 5948 states have internal predecessors, (8443), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 8446 transitions. [2023-04-02 05:48:06,868 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 8446 transitions. Word has length 145 [2023-04-02 05:48:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:06,868 INFO L495 AbstractCegarLoop]: Abstraction has 5952 states and 8446 transitions. [2023-04-02 05:48:06,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 8446 transitions. [2023-04-02 05:48:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 05:48:06,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:06,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:06,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:48:06,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:06,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1051493704, now seen corresponding path program 1 times [2023-04-02 05:48:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477994196] [2023-04-02 05:48:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:06,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:07,433 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 05:48:07,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:07,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477994196] [2023-04-02 05:48:07,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477994196] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:07,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:07,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:07,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098105932] [2023-04-02 05:48:07,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:07,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:07,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:07,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:07,436 INFO L87 Difference]: Start difference. First operand 5952 states and 8446 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:09,769 INFO L93 Difference]: Finished difference Result 17383 states and 24581 transitions. [2023-04-02 05:48:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:09,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2023-04-02 05:48:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:09,810 INFO L225 Difference]: With dead ends: 17383 [2023-04-02 05:48:09,810 INFO L226 Difference]: Without dead ends: 11491 [2023-04-02 05:48:09,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:09,824 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 1041 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:09,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1405 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 05:48:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11491 states. [2023-04-02 05:48:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11491 to 11451. [2023-04-02 05:48:10,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11451 states, 11443 states have (on average 1.4007690291007604) internal successors, (16029), 11447 states have internal predecessors, (16029), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11451 states to 11451 states and 16032 transitions. [2023-04-02 05:48:10,807 INFO L78 Accepts]: Start accepts. Automaton has 11451 states and 16032 transitions. Word has length 145 [2023-04-02 05:48:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:10,807 INFO L495 AbstractCegarLoop]: Abstraction has 11451 states and 16032 transitions. [2023-04-02 05:48:10,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 11451 states and 16032 transitions. [2023-04-02 05:48:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-02 05:48:10,823 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:10,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:10,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:48:10,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:10,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1767279752, now seen corresponding path program 1 times [2023-04-02 05:48:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:10,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574180206] [2023-04-02 05:48:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:10,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:11,124 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 05:48:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:11,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574180206] [2023-04-02 05:48:11,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574180206] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:11,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:11,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975550279] [2023-04-02 05:48:11,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:11,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:11,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:11,126 INFO L87 Difference]: Start difference. First operand 11451 states and 16032 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:14,256 INFO L93 Difference]: Finished difference Result 34193 states and 47855 transitions. [2023-04-02 05:48:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146 [2023-04-02 05:48:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:14,320 INFO L225 Difference]: With dead ends: 34193 [2023-04-02 05:48:14,320 INFO L226 Difference]: Without dead ends: 22837 [2023-04-02 05:48:14,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:14,344 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 504 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:14,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1557 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 05:48:14,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22837 states. [2023-04-02 05:48:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22837 to 11461. [2023-04-02 05:48:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11461 states, 11453 states have (on average 1.4004191041648477) internal successors, (16039), 11457 states have internal predecessors, (16039), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11461 states to 11461 states and 16042 transitions. [2023-04-02 05:48:15,387 INFO L78 Accepts]: Start accepts. Automaton has 11461 states and 16042 transitions. Word has length 146 [2023-04-02 05:48:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:15,388 INFO L495 AbstractCegarLoop]: Abstraction has 11461 states and 16042 transitions. [2023-04-02 05:48:15,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 11461 states and 16042 transitions. [2023-04-02 05:48:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-02 05:48:15,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:15,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:15,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:48:15,406 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:15,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash -84222681, now seen corresponding path program 1 times [2023-04-02 05:48:15,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:15,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443775196] [2023-04-02 05:48:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:15,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:15,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:15,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443775196] [2023-04-02 05:48:15,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443775196] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:15,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:15,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944568355] [2023-04-02 05:48:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:15,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:15,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:15,721 INFO L87 Difference]: Start difference. First operand 11461 states and 16042 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:18,545 INFO L93 Difference]: Finished difference Result 30305 states and 42357 transitions. [2023-04-02 05:48:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2023-04-02 05:48:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:18,593 INFO L225 Difference]: With dead ends: 30305 [2023-04-02 05:48:18,593 INFO L226 Difference]: Without dead ends: 19701 [2023-04-02 05:48:18,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:18,622 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 450 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:18,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1297 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:48:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19701 states. [2023-04-02 05:48:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19701 to 19661. [2023-04-02 05:48:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19661 states, 19653 states have (on average 1.3763801964076732) internal successors, (27050), 19657 states have internal predecessors, (27050), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19661 states to 19661 states and 27053 transitions. [2023-04-02 05:48:20,328 INFO L78 Accepts]: Start accepts. Automaton has 19661 states and 27053 transitions. Word has length 147 [2023-04-02 05:48:20,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:20,328 INFO L495 AbstractCegarLoop]: Abstraction has 19661 states and 27053 transitions. [2023-04-02 05:48:20,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 19661 states and 27053 transitions. [2023-04-02 05:48:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-02 05:48:20,352 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:20,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:20,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:48:20,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:20,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 460977066, now seen corresponding path program 1 times [2023-04-02 05:48:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:20,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074673501] [2023-04-02 05:48:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:20,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:20,830 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 05:48:20,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074673501] [2023-04-02 05:48:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074673501] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:20,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:20,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:48:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959898910] [2023-04-02 05:48:20,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:20,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:48:20,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:48:20,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:20,833 INFO L87 Difference]: Start difference. First operand 19661 states and 27053 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:25,001 INFO L93 Difference]: Finished difference Result 52631 states and 72121 transitions. [2023-04-02 05:48:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:25,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2023-04-02 05:48:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:25,065 INFO L225 Difference]: With dead ends: 52631 [2023-04-02 05:48:25,065 INFO L226 Difference]: Without dead ends: 33052 [2023-04-02 05:48:25,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:25,101 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 964 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:25,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1823 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:48:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33052 states. [2023-04-02 05:48:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33052 to 33026. [2023-04-02 05:48:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33026 states, 33018 states have (on average 1.3490520322248472) internal successors, (44543), 33022 states have internal predecessors, (44543), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33026 states to 33026 states and 44546 transitions. [2023-04-02 05:48:28,119 INFO L78 Accepts]: Start accepts. Automaton has 33026 states and 44546 transitions. Word has length 147 [2023-04-02 05:48:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:28,120 INFO L495 AbstractCegarLoop]: Abstraction has 33026 states and 44546 transitions. [2023-04-02 05:48:28,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 33026 states and 44546 transitions. [2023-04-02 05:48:28,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-02 05:48:28,160 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:28,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:28,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:48:28,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:28,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:28,161 INFO L85 PathProgramCache]: Analyzing trace with hash 266632167, now seen corresponding path program 1 times [2023-04-02 05:48:28,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:28,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345847279] [2023-04-02 05:48:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:28,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:28,640 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 05:48:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345847279] [2023-04-02 05:48:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345847279] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:28,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:28,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106864379] [2023-04-02 05:48:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:28,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:28,643 INFO L87 Difference]: Start difference. First operand 33026 states and 44546 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:33,170 INFO L93 Difference]: Finished difference Result 66582 states and 89658 transitions. [2023-04-02 05:48:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2023-04-02 05:48:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:33,243 INFO L225 Difference]: With dead ends: 66582 [2023-04-02 05:48:33,244 INFO L226 Difference]: Without dead ends: 33958 [2023-04-02 05:48:33,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:33,294 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1218 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:33,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1205 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:48:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33958 states. [2023-04-02 05:48:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33958 to 33500. [2023-04-02 05:48:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33500 states, 33492 states have (on average 1.345515346948525) internal successors, (45064), 33496 states have internal predecessors, (45064), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33500 states to 33500 states and 45067 transitions. [2023-04-02 05:48:36,585 INFO L78 Accepts]: Start accepts. Automaton has 33500 states and 45067 transitions. Word has length 147 [2023-04-02 05:48:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:36,585 INFO L495 AbstractCegarLoop]: Abstraction has 33500 states and 45067 transitions. [2023-04-02 05:48:36,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 33500 states and 45067 transitions. [2023-04-02 05:48:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 05:48:36,617 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:36,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:36,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:48:36,618 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:36,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2140226121, now seen corresponding path program 1 times [2023-04-02 05:48:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:36,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217199644] [2023-04-02 05:48:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:36,920 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 05:48:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:36,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217199644] [2023-04-02 05:48:36,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217199644] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:36,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:36,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:36,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040140735] [2023-04-02 05:48:36,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:36,922 INFO L87 Difference]: Start difference. First operand 33500 states and 45067 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:44,319 INFO L93 Difference]: Finished difference Result 98508 states and 132769 transitions. [2023-04-02 05:48:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:44,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2023-04-02 05:48:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:44,435 INFO L225 Difference]: With dead ends: 98508 [2023-04-02 05:48:44,436 INFO L226 Difference]: Without dead ends: 66578 [2023-04-02 05:48:44,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:44,480 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 490 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:44,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1134 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:48:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66578 states. [2023-04-02 05:48:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66578 to 33540. [2023-04-02 05:48:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33540 states, 33532 states have (on average 1.345103185017297) internal successors, (45104), 33536 states have internal predecessors, (45104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33540 states to 33540 states and 45107 transitions. [2023-04-02 05:48:48,518 INFO L78 Accepts]: Start accepts. Automaton has 33540 states and 45107 transitions. Word has length 148 [2023-04-02 05:48:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:48,518 INFO L495 AbstractCegarLoop]: Abstraction has 33540 states and 45107 transitions. [2023-04-02 05:48:48,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 33540 states and 45107 transitions. [2023-04-02 05:48:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 05:48:48,542 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:48,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:48,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:48:48,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:48,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash -901321210, now seen corresponding path program 1 times [2023-04-02 05:48:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63794097] [2023-04-02 05:48:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:48,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:49,017 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 05:48:49,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:49,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63794097] [2023-04-02 05:48:49,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63794097] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:49,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:49,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:49,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814178647] [2023-04-02 05:48:49,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:49,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:49,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:49,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:49,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:49,020 INFO L87 Difference]: Start difference. First operand 33540 states and 45107 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:52,633 INFO L93 Difference]: Finished difference Result 54824 states and 73796 transitions. [2023-04-02 05:48:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:52,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2023-04-02 05:48:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:52,665 INFO L225 Difference]: With dead ends: 54824 [2023-04-02 05:48:52,665 INFO L226 Difference]: Without dead ends: 22286 [2023-04-02 05:48:52,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:52,689 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 65 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:52,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1629 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:48:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22286 states. [2023-04-02 05:48:55,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22286 to 22286. [2023-04-02 05:48:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22286 states, 22278 states have (on average 1.3408295179100458) internal successors, (29871), 22282 states have internal predecessors, (29871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22286 states to 22286 states and 29874 transitions. [2023-04-02 05:48:55,162 INFO L78 Accepts]: Start accepts. Automaton has 22286 states and 29874 transitions. Word has length 149 [2023-04-02 05:48:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:55,162 INFO L495 AbstractCegarLoop]: Abstraction has 22286 states and 29874 transitions. [2023-04-02 05:48:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22286 states and 29874 transitions. [2023-04-02 05:48:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 05:48:55,178 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:55,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:48:55,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:48:55,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1454173271, now seen corresponding path program 1 times [2023-04-02 05:48:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:55,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913412203] [2023-04-02 05:48:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:55,514 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 05:48:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:55,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913412203] [2023-04-02 05:48:55,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913412203] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:55,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:55,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:55,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758806629] [2023-04-02 05:48:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:55,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:55,516 INFO L87 Difference]: Start difference. First operand 22286 states and 29874 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:01,327 INFO L93 Difference]: Finished difference Result 59002 states and 80077 transitions. [2023-04-02 05:49:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:49:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-04-02 05:49:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:01,388 INFO L225 Difference]: With dead ends: 59002 [2023-04-02 05:49:01,388 INFO L226 Difference]: Without dead ends: 41669 [2023-04-02 05:49:01,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:01,407 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 370 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:01,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1020 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:49:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41669 states. [2023-04-02 05:49:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41669 to 41619. [2023-04-02 05:49:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41619 states, 41611 states have (on average 1.3385162577203142) internal successors, (55697), 41615 states have internal predecessors, (55697), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41619 states to 41619 states and 55700 transitions. [2023-04-02 05:49:06,334 INFO L78 Accepts]: Start accepts. Automaton has 41619 states and 55700 transitions. Word has length 157 [2023-04-02 05:49:06,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:06,334 INFO L495 AbstractCegarLoop]: Abstraction has 41619 states and 55700 transitions. [2023-04-02 05:49:06,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 41619 states and 55700 transitions. [2023-04-02 05:49:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 05:49:06,369 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:06,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:06,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:49:06,370 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:49:06,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1112730098, now seen corresponding path program 1 times [2023-04-02 05:49:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840796546] [2023-04-02 05:49:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:06,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:06,788 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 05:49:06,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:06,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840796546] [2023-04-02 05:49:06,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840796546] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:06,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:06,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:49:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002817345] [2023-04-02 05:49:06,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:06,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:49:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:06,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:49:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:06,791 INFO L87 Difference]: Start difference. First operand 41619 states and 55700 transitions. Second operand has 6 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:10,844 INFO L93 Difference]: Finished difference Result 55175 states and 74704 transitions. [2023-04-02 05:49:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:49:10,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-04-02 05:49:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:10,871 INFO L225 Difference]: With dead ends: 55175 [2023-04-02 05:49:10,872 INFO L226 Difference]: Without dead ends: 22286 [2023-04-02 05:49:10,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 05:49:10,897 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1404 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:10,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 498 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:49:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22286 states. [2023-04-02 05:49:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22286 to 22286. [2023-04-02 05:49:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22286 states, 22278 states have (on average 1.3224257114642248) internal successors, (29461), 22282 states have internal predecessors, (29461), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22286 states to 22286 states and 29464 transitions. [2023-04-02 05:49:13,474 INFO L78 Accepts]: Start accepts. Automaton has 22286 states and 29464 transitions. Word has length 157 [2023-04-02 05:49:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:13,474 INFO L495 AbstractCegarLoop]: Abstraction has 22286 states and 29464 transitions. [2023-04-02 05:49:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22286 states and 29464 transitions. [2023-04-02 05:49:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 05:49:13,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:13,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:13,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:49:13,488 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:49:13,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash -379590158, now seen corresponding path program 1 times [2023-04-02 05:49:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:13,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157188362] [2023-04-02 05:49:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:13,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:14,423 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 05:49:14,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157188362] [2023-04-02 05:49:14,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157188362] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:14,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:14,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:49:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193087876] [2023-04-02 05:49:14,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:14,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:49:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:49:14,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:49:14,425 INFO L87 Difference]: Start difference. First operand 22286 states and 29464 transitions. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:20,426 INFO L93 Difference]: Finished difference Result 46341 states and 62627 transitions. [2023-04-02 05:49:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:49:20,427 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-04-02 05:49:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:20,478 INFO L225 Difference]: With dead ends: 46341 [2023-04-02 05:49:20,478 INFO L226 Difference]: Without dead ends: 37679 [2023-04-02 05:49:20,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:49:20,496 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 627 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:20,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 2953 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:49:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37679 states. [2023-04-02 05:49:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37679 to 37677. [2023-04-02 05:49:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37677 states, 37669 states have (on average 1.31681223287053) internal successors, (49603), 37673 states have internal predecessors, (49603), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37677 states to 37677 states and 49606 transitions. [2023-04-02 05:49:25,404 INFO L78 Accepts]: Start accepts. Automaton has 37677 states and 49606 transitions. Word has length 157 [2023-04-02 05:49:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:25,405 INFO L495 AbstractCegarLoop]: Abstraction has 37677 states and 49606 transitions. [2023-04-02 05:49:25,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 37677 states and 49606 transitions. [2023-04-02 05:49:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 05:49:25,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:25,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:25,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:49:25,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:49:25,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1960961897, now seen corresponding path program 1 times [2023-04-02 05:49:25,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:25,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318509728] [2023-04-02 05:49:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:26,562 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 05:49:26,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:26,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318509728] [2023-04-02 05:49:26,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318509728] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:26,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:26,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:49:26,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028602734] [2023-04-02 05:49:26,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:26,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:49:26,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:49:26,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:49:26,565 INFO L87 Difference]: Start difference. First operand 37677 states and 49606 transitions. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 13 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:38,548 INFO L93 Difference]: Finished difference Result 78708 states and 105243 transitions. [2023-04-02 05:49:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:49:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 13 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-04-02 05:49:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:38,652 INFO L225 Difference]: With dead ends: 78708 [2023-04-02 05:49:38,652 INFO L226 Difference]: Without dead ends: 70861 [2023-04-02 05:49:38,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:49:38,678 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 4746 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 5428 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:38,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4746 Valid, 5428 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 05:49:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70861 states. [2023-04-02 05:49:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70861 to 42897. [2023-04-02 05:49:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42897 states, 42889 states have (on average 1.302082118958241) internal successors, (55845), 42893 states have internal predecessors, (55845), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42897 states to 42897 states and 55848 transitions. [2023-04-02 05:49:45,376 INFO L78 Accepts]: Start accepts. Automaton has 42897 states and 55848 transitions. Word has length 157 [2023-04-02 05:49:45,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:45,376 INFO L495 AbstractCegarLoop]: Abstraction has 42897 states and 55848 transitions. [2023-04-02 05:49:45,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 13 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 42897 states and 55848 transitions. [2023-04-02 05:49:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 05:49:45,409 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:45,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:45,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 05:49:45,409 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:49:45,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1313576306, now seen corresponding path program 1 times [2023-04-02 05:49:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707268104] [2023-04-02 05:49:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:45,972 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 05:49:45,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707268104] [2023-04-02 05:49:45,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707268104] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:45,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:45,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:49:45,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903741764] [2023-04-02 05:49:45,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:45,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:49:45,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:45,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:49:45,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:49:45,974 INFO L87 Difference]: Start difference. First operand 42897 states and 55848 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:52,841 INFO L93 Difference]: Finished difference Result 72375 states and 94253 transitions. [2023-04-02 05:49:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:49:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-04-02 05:49:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:52,890 INFO L225 Difference]: With dead ends: 72375 [2023-04-02 05:49:52,890 INFO L226 Difference]: Without dead ends: 38855 [2023-04-02 05:49:52,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:52,925 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 53 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:52,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1596 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:49:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38855 states. [2023-04-02 05:49:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38855 to 38855. [2023-04-02 05:49:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38855 states, 38847 states have (on average 1.3050428604525446) internal successors, (50697), 38851 states have internal predecessors, (50697), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38855 states to 38855 states and 50700 transitions. [2023-04-02 05:49:58,775 INFO L78 Accepts]: Start accepts. Automaton has 38855 states and 50700 transitions. Word has length 157 [2023-04-02 05:49:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:58,775 INFO L495 AbstractCegarLoop]: Abstraction has 38855 states and 50700 transitions. [2023-04-02 05:49:58,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 38855 states and 50700 transitions. [2023-04-02 05:49:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-02 05:49:58,800 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:58,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:58,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 05:49:58,800 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:49:58,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1349544844, now seen corresponding path program 1 times [2023-04-02 05:49:58,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:58,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027299735] [2023-04-02 05:49:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:59,468 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 05:49:59,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027299735] [2023-04-02 05:49:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027299735] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:59,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:59,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:49:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053411828] [2023-04-02 05:49:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:59,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:49:59,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:49:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:49:59,470 INFO L87 Difference]: Start difference. First operand 38855 states and 50700 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 9 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:05,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:05,740 INFO L93 Difference]: Finished difference Result 49201 states and 65847 transitions. [2023-04-02 05:50:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:50:05,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 9 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2023-04-02 05:50:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:05,783 INFO L225 Difference]: With dead ends: 49201 [2023-04-02 05:50:05,784 INFO L226 Difference]: Without dead ends: 35191 [2023-04-02 05:50:05,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:50:05,803 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 2090 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:05,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 2572 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:50:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35191 states. [2023-04-02 05:50:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35191 to 35189. [2023-04-02 05:50:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35189 states, 35181 states have (on average 1.282737841448509) internal successors, (45128), 35185 states have internal predecessors, (45128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35189 states to 35189 states and 45131 transitions. [2023-04-02 05:50:11,106 INFO L78 Accepts]: Start accepts. Automaton has 35189 states and 45131 transitions. Word has length 163 [2023-04-02 05:50:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:11,107 INFO L495 AbstractCegarLoop]: Abstraction has 35189 states and 45131 transitions. [2023-04-02 05:50:11,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 9 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 35189 states and 45131 transitions. [2023-04-02 05:50:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-02 05:50:11,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:11,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:11,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 05:50:11,133 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:50:11,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:11,133 INFO L85 PathProgramCache]: Analyzing trace with hash 4088812, now seen corresponding path program 1 times [2023-04-02 05:50:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:11,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524879826] [2023-04-02 05:50:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:11,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:11,573 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 05:50:11,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524879826] [2023-04-02 05:50:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524879826] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:11,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:11,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:50:11,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683584992] [2023-04-02 05:50:11,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:11,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:50:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:50:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:50:11,576 INFO L87 Difference]: Start difference. First operand 35189 states and 45131 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:16,428 INFO L93 Difference]: Finished difference Result 62379 states and 80173 transitions. [2023-04-02 05:50:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:50:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2023-04-02 05:50:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:16,588 INFO L225 Difference]: With dead ends: 62379 [2023-04-02 05:50:16,588 INFO L226 Difference]: Without dead ends: 27264 [2023-04-02 05:50:16,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:50:16,618 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 43 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:16,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1580 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:50:16,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27264 states. [2023-04-02 05:50:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27264 to 27264. [2023-04-02 05:50:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27264 states, 27256 states have (on average 1.288853830349281) internal successors, (35129), 27260 states have internal predecessors, (35129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27264 states to 27264 states and 35132 transitions. [2023-04-02 05:50:20,651 INFO L78 Accepts]: Start accepts. Automaton has 27264 states and 35132 transitions. Word has length 163 [2023-04-02 05:50:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:20,651 INFO L495 AbstractCegarLoop]: Abstraction has 27264 states and 35132 transitions. [2023-04-02 05:50:20,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 27264 states and 35132 transitions. [2023-04-02 05:50:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-02 05:50:20,670 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:20,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 05:50:20,671 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:50:20,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash -404344311, now seen corresponding path program 1 times [2023-04-02 05:50:20,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:20,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886262532] [2023-04-02 05:50:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:20,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:21,018 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 05:50:21,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886262532] [2023-04-02 05:50:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886262532] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:21,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:21,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:50:21,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818633487] [2023-04-02 05:50:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:50:21,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:50:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:50:21,020 INFO L87 Difference]: Start difference. First operand 27264 states and 35132 transitions. Second operand has 6 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:26,440 INFO L93 Difference]: Finished difference Result 53485 states and 69065 transitions. [2023-04-02 05:50:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:50:26,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2023-04-02 05:50:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:26,488 INFO L225 Difference]: With dead ends: 53485 [2023-04-02 05:50:26,488 INFO L226 Difference]: Without dead ends: 27264 [2023-04-02 05:50:26,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 05:50:26,509 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1369 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:26,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 476 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:50:26,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27264 states. [2023-04-02 05:50:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27264 to 27264. [2023-04-02 05:50:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27264 states, 27256 states have (on average 1.2695186380980334) internal successors, (34602), 27260 states have internal predecessors, (34602), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27264 states to 27264 states and 34605 transitions. [2023-04-02 05:50:30,882 INFO L78 Accepts]: Start accepts. Automaton has 27264 states and 34605 transitions. Word has length 171 [2023-04-02 05:50:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:30,882 INFO L495 AbstractCegarLoop]: Abstraction has 27264 states and 34605 transitions. [2023-04-02 05:50:30,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 27264 states and 34605 transitions. [2023-04-02 05:50:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-02 05:50:30,902 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:30,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:30,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 05:50:30,903 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:50:30,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash 663712009, now seen corresponding path program 1 times [2023-04-02 05:50:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791481987] [2023-04-02 05:50:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:31,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:31,238 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 05:50:31,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791481987] [2023-04-02 05:50:31,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791481987] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:31,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:31,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:50:31,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678089191] [2023-04-02 05:50:31,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:31,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:50:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:31,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:50:31,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:50:31,240 INFO L87 Difference]: Start difference. First operand 27264 states and 34605 transitions. Second operand has 6 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:36,705 INFO L93 Difference]: Finished difference Result 49571 states and 63056 transitions. [2023-04-02 05:50:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:50:36,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2023-04-02 05:50:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:36,752 INFO L225 Difference]: With dead ends: 49571 [2023-04-02 05:50:36,752 INFO L226 Difference]: Without dead ends: 27264 [2023-04-02 05:50:36,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 05:50:36,773 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1338 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:36,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 474 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:50:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27264 states. [2023-04-02 05:50:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27264 to 27264. [2023-04-02 05:50:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27264 states, 27256 states have (on average 1.2533754035808629) internal successors, (34162), 27260 states have internal predecessors, (34162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27264 states to 27264 states and 34165 transitions. [2023-04-02 05:50:41,438 INFO L78 Accepts]: Start accepts. Automaton has 27264 states and 34165 transitions. Word has length 171 [2023-04-02 05:50:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:41,439 INFO L495 AbstractCegarLoop]: Abstraction has 27264 states and 34165 transitions. [2023-04-02 05:50:41,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 27264 states and 34165 transitions. [2023-04-02 05:50:41,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-02 05:50:41,459 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:41,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:41,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 05:50:41,459 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:50:41,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 819404297, now seen corresponding path program 1 times [2023-04-02 05:50:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:41,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915108465] [2023-04-02 05:50:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:41,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:42,249 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 05:50:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915108465] [2023-04-02 05:50:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915108465] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:42,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:50:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898095443] [2023-04-02 05:50:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:42,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:50:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:50:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:50:42,252 INFO L87 Difference]: Start difference. First operand 27264 states and 34165 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:46,899 INFO L93 Difference]: Finished difference Result 34044 states and 43680 transitions. [2023-04-02 05:50:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:50:46,899 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2023-04-02 05:50:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:46,928 INFO L225 Difference]: With dead ends: 34044 [2023-04-02 05:50:46,928 INFO L226 Difference]: Without dead ends: 24454 [2023-04-02 05:50:46,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:50:46,944 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1346 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 2447 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:50:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24454 states. [2023-04-02 05:50:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24454 to 24452. [2023-04-02 05:50:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24452 states, 24444 states have (on average 1.2279495990836198) internal successors, (30016), 24448 states have internal predecessors, (30016), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24452 states to 24452 states and 30019 transitions. [2023-04-02 05:50:50,764 INFO L78 Accepts]: Start accepts. Automaton has 24452 states and 30019 transitions. Word has length 171 [2023-04-02 05:50:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:50,764 INFO L495 AbstractCegarLoop]: Abstraction has 24452 states and 30019 transitions. [2023-04-02 05:50:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 24452 states and 30019 transitions. [2023-04-02 05:50:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-02 05:50:50,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:50,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:50,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 05:50:50,784 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:50:50,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash -862223899, now seen corresponding path program 1 times [2023-04-02 05:50:50,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:50,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144093539] [2023-04-02 05:50:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:50,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:51,656 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 05:50:51,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:51,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144093539] [2023-04-02 05:50:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144093539] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:51,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:50:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331198326] [2023-04-02 05:50:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:51,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:50:51,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:50:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:50:51,658 INFO L87 Difference]: Start difference. First operand 24452 states and 30019 transitions. Second operand has 14 states, 14 states have (on average 12.0) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:51:00,641 INFO L93 Difference]: Finished difference Result 41397 states and 51754 transitions. [2023-04-02 05:51:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:51:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.0) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2023-04-02 05:51:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:51:00,688 INFO L225 Difference]: With dead ends: 41397 [2023-04-02 05:51:00,689 INFO L226 Difference]: Without dead ends: 37880 [2023-04-02 05:51:00,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:51:00,700 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 3224 mSDsluCounter, 5914 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3224 SdHoareTripleChecker+Valid, 6729 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:51:00,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3224 Valid, 6729 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 05:51:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37880 states. [2023-04-02 05:51:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37880 to 26788. [2023-04-02 05:51:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26788 states, 26780 states have (on average 1.221023151605676) internal successors, (32699), 26784 states have internal predecessors, (32699), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26788 states to 26788 states and 32702 transitions. [2023-04-02 05:51:05,525 INFO L78 Accepts]: Start accepts. Automaton has 26788 states and 32702 transitions. Word has length 171 [2023-04-02 05:51:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:51:05,525 INFO L495 AbstractCegarLoop]: Abstraction has 26788 states and 32702 transitions. [2023-04-02 05:51:05,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.0) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:05,525 INFO L276 IsEmpty]: Start isEmpty. Operand 26788 states and 32702 transitions. [2023-04-02 05:51:05,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-02 05:51:05,554 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:51:05,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:51:05,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 05:51:05,554 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:51:05,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:51:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash -499184194, now seen corresponding path program 1 times [2023-04-02 05:51:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:51:05,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299233001] [2023-04-02 05:51:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:51:05,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:51:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:05,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:51:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:05,999 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 05:51:05,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:51:05,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299233001] [2023-04-02 05:51:06,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299233001] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:51:06,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:51:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:51:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883031413] [2023-04-02 05:51:06,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:51:06,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:51:06,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:51:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:51:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:51:06,001 INFO L87 Difference]: Start difference. First operand 26788 states and 32702 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:51:12,370 INFO L93 Difference]: Finished difference Result 53806 states and 65660 transitions. [2023-04-02 05:51:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:51:12,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2023-04-02 05:51:12,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:51:12,408 INFO L225 Difference]: With dead ends: 53806 [2023-04-02 05:51:12,408 INFO L226 Difference]: Without dead ends: 27401 [2023-04-02 05:51:12,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:51:12,427 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 994 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:51:12,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1297 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:51:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27401 states. [2023-04-02 05:51:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27401 to 27086. [2023-04-02 05:51:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27086 states, 27078 states have (on average 1.2190339020607135) internal successors, (33009), 27082 states have internal predecessors, (33009), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27086 states to 27086 states and 33012 transitions. [2023-04-02 05:51:17,268 INFO L78 Accepts]: Start accepts. Automaton has 27086 states and 33012 transitions. Word has length 171 [2023-04-02 05:51:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:51:17,269 INFO L495 AbstractCegarLoop]: Abstraction has 27086 states and 33012 transitions. [2023-04-02 05:51:17,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 27086 states and 33012 transitions. [2023-04-02 05:51:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-02 05:51:17,298 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:51:17,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:51:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 05:51:17,299 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:51:17,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:51:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1122107407, now seen corresponding path program 1 times [2023-04-02 05:51:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:51:17,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864772731] [2023-04-02 05:51:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:51:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:51:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:51:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:17,718 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 05:51:17,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:51:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864772731] [2023-04-02 05:51:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864772731] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:51:17,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:51:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:51:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735905373] [2023-04-02 05:51:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:51:17,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:51:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:51:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:51:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:51:17,721 INFO L87 Difference]: Start difference. First operand 27086 states and 33012 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:51:23,077 INFO L93 Difference]: Finished difference Result 39081 states and 47577 transitions. [2023-04-02 05:51:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:51:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2023-04-02 05:51:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:51:23,107 INFO L225 Difference]: With dead ends: 39081 [2023-04-02 05:51:23,107 INFO L226 Difference]: Without dead ends: 23635 [2023-04-02 05:51:23,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:51:23,122 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 21 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:51:23,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1520 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:51:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23635 states. [2023-04-02 05:51:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23635 to 23635. [2023-04-02 05:51:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23635 states, 23627 states have (on average 1.2161933381301053) internal successors, (28735), 23631 states have internal predecessors, (28735), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23635 states to 23635 states and 28738 transitions. [2023-04-02 05:51:27,659 INFO L78 Accepts]: Start accepts. Automaton has 23635 states and 28738 transitions. Word has length 171 [2023-04-02 05:51:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:51:27,660 INFO L495 AbstractCegarLoop]: Abstraction has 23635 states and 28738 transitions. [2023-04-02 05:51:27,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:51:27,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23635 states and 28738 transitions. [2023-04-02 05:51:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-04-02 05:51:27,679 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:51:27,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:51:27,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 05:51:27,679 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-02 05:51:27,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:51:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1846447545, now seen corresponding path program 1 times [2023-04-02 05:51:27,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:51:27,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030941644] [2023-04-02 05:51:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:51:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:51:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:51:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:29,493 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 05:51:29,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:51:29,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030941644] [2023-04-02 05:51:29,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030941644] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:51:29,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:51:29,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-02 05:51:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516526915] [2023-04-02 05:51:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:51:29,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 05:51:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:51:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 05:51:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:51:29,495 INFO L87 Difference]: Start difference. First operand 23635 states and 28738 transitions. Second operand has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 22 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)