/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_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:37:53,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:37:53,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:37:53,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:37:53,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:37:53,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:37:53,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:37:53,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:37:53,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:37:53,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:37:53,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:37:53,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:37:53,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:37:53,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:37:53,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:37:53,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:37:53,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:37:53,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:37:53,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:37:53,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:37:53,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:37:53,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:37:53,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:37:53,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:37:53,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:37:53,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:37:53,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:37:53,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:37:53,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:37:53,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:37:53,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:37:53,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:37:53,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:37:53,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:37:53,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:37:53,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:37:53,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:37:53,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:37:53,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:37:53,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:37:53,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:37:53,579 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 06:37:53,598 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:37:53,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:37:53,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:37:53,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:37:53,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:37:53,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:37:53,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:37:53,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:37:53,600 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:37:53,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:37:53,600 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:37:53,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:37:53,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:37:53,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:37:53,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:37:53,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:37:53,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:37:53,603 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:37:53,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:37:53,603 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:37:53,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:37:53,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:37:53,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:37:53,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:37:53,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:37:53,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:37:53,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:37:53,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:37:53,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:37:53,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:37:53,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:37:53,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:37:53,605 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:37:53,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:37:53,605 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:37:53,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:37:53,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:37:53,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:37:53,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:37:53,816 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:37:53,816 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:37:53,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:37:54,813 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:37:55,013 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:37:55,013 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:37:55,029 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e78ba216/6eac4bb1d22a44ceb0137fbf511f1c3c/FLAGb62de3f19 [2023-04-02 06:37:55,040 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e78ba216/6eac4bb1d22a44ceb0137fbf511f1c3c [2023-04-02 06:37:55,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:37:55,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:37:55,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:37:55,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:37:55,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:37:55,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121b0d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55, skipping insertion in model container [2023-04-02 06:37:55,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:37:55,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:37:55,247 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_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9243,9256] [2023-04-02 06:37:55,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:37:55,337 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:37:55,388 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_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9243,9256] [2023-04-02 06:37:55,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:37:55,430 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:37:55,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55 WrapperNode [2023-04-02 06:37:55,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:37:55,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:37:55,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:37:55,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:37:55,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:37:55,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:37:55,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:37:55,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:37:55,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (1/1) ... [2023-04-02 06:37:55,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:37:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:37:55,538 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 06:37:55,556 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 06:37:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:37:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:37:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:37:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:37:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:37:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:37:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:37:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:37:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:37:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:37:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:37:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:37:55,718 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:37:55,719 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:37:56,266 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:37:56,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:37:56,272 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:37:56,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:37:56 BoogieIcfgContainer [2023-04-02 06:37:56,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:37:56,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:37:56,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:37:56,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:37:56,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:37:55" (1/3) ... [2023-04-02 06:37:56,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f1512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:37:56, skipping insertion in model container [2023-04-02 06:37:56,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:37:55" (2/3) ... [2023-04-02 06:37:56,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f1512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:37:56, skipping insertion in model container [2023-04-02 06:37:56,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:37:56" (3/3) ... [2023-04-02 06:37:56,278 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:37:56,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:37:56,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:37:56,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:37:56,342 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;@1bbcfa94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:37:56,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:37:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 177 states have (on average 1.7570621468926553) internal successors, (311), 179 states have internal predecessors, (311), 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 06:37:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 06:37:56,356 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:56,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:37:56,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:56,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1749833666, now seen corresponding path program 1 times [2023-04-02 06:37:56,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:56,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665181284] [2023-04-02 06:37:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:57,202 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 06:37:57,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665181284] [2023-04-02 06:37:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665181284] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:57,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:37:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931270750] [2023-04-02 06:37:57,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:57,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:37:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:37:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:37:57,245 INFO L87 Difference]: Start difference. First operand has 184 states, 177 states have (on average 1.7570621468926553) internal successors, (311), 179 states have internal predecessors, (311), 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 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 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 06:37:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:58,588 INFO L93 Difference]: Finished difference Result 1177 states and 1860 transitions. [2023-04-02 06:37:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:37:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 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 95 [2023-04-02 06:37:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:58,607 INFO L225 Difference]: With dead ends: 1177 [2023-04-02 06:37:58,607 INFO L226 Difference]: Without dead ends: 1029 [2023-04-02 06:37:58,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:37:58,618 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2518 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:58,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2518 Valid, 3553 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:37:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-04-02 06:37:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 272. [2023-04-02 06:37:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 1.4402985074626866) internal successors, (386), 268 states have internal predecessors, (386), 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 06:37:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 389 transitions. [2023-04-02 06:37:58,702 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 389 transitions. Word has length 95 [2023-04-02 06:37:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:58,703 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 389 transitions. [2023-04-02 06:37:58,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 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 06:37:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 389 transitions. [2023-04-02 06:37:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:37:58,711 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:58,711 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] [2023-04-02 06:37:58,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:37:58,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:58,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1275422718, now seen corresponding path program 1 times [2023-04-02 06:37:58,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574868215] [2023-04-02 06:37:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:59,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:59,055 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 06:37:59,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574868215] [2023-04-02 06:37:59,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574868215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:59,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:59,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:37:59,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562600364] [2023-04-02 06:37:59,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:59,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:37:59,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:59,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:37:59,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:37:59,058 INFO L87 Difference]: Start difference. First operand 272 states and 389 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:00,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:00,070 INFO L93 Difference]: Finished difference Result 1225 states and 1878 transitions. [2023-04-02 06:38:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:00,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:00,074 INFO L225 Difference]: With dead ends: 1225 [2023-04-02 06:38:00,074 INFO L226 Difference]: Without dead ends: 1087 [2023-04-02 06:38:00,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:00,076 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1642 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:00,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 1737 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:38:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-04-02 06:38:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 335. [2023-04-02 06:38:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 331 states have (on average 1.4652567975830815) internal successors, (485), 331 states have internal predecessors, (485), 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 06:38:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 488 transitions. [2023-04-02 06:38:00,106 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 488 transitions. Word has length 97 [2023-04-02 06:38:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:00,106 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 488 transitions. [2023-04-02 06:38:00,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 488 transitions. [2023-04-02 06:38:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:38:00,107 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:00,107 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] [2023-04-02 06:38:00,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:38:00,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:00,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1132893373, now seen corresponding path program 1 times [2023-04-02 06:38:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:00,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888298132] [2023-04-02 06:38:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:00,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:00,405 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 06:38:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888298132] [2023-04-02 06:38:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888298132] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:00,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:00,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725860962] [2023-04-02 06:38:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:00,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:00,407 INFO L87 Difference]: Start difference. First operand 335 states and 488 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:01,232 INFO L93 Difference]: Finished difference Result 1314 states and 2018 transitions. [2023-04-02 06:38:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:01,237 INFO L225 Difference]: With dead ends: 1314 [2023-04-02 06:38:01,237 INFO L226 Difference]: Without dead ends: 1176 [2023-04-02 06:38:01,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:01,244 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2302 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:01,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 1469 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:38:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-04-02 06:38:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 508. [2023-04-02 06:38:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 504 states have (on average 1.501984126984127) internal successors, (757), 504 states have internal predecessors, (757), 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 06:38:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 760 transitions. [2023-04-02 06:38:01,303 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 760 transitions. Word has length 97 [2023-04-02 06:38:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:01,304 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 760 transitions. [2023-04-02 06:38:01,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 760 transitions. [2023-04-02 06:38:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:38:01,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:01,305 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] [2023-04-02 06:38:01,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:38:01,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:01,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:01,305 INFO L85 PathProgramCache]: Analyzing trace with hash -961938912, now seen corresponding path program 1 times [2023-04-02 06:38:01,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:01,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029206316] [2023-04-02 06:38:01,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:01,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:01,728 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 06:38:01,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:01,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029206316] [2023-04-02 06:38:01,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029206316] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:01,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:01,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:01,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425208608] [2023-04-02 06:38:01,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:01,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:01,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:01,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:01,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:01,731 INFO L87 Difference]: Start difference. First operand 508 states and 760 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:02,443 INFO L93 Difference]: Finished difference Result 988 states and 1512 transitions. [2023-04-02 06:38:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:02,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:02,446 INFO L225 Difference]: With dead ends: 988 [2023-04-02 06:38:02,446 INFO L226 Difference]: Without dead ends: 646 [2023-04-02 06:38:02,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:38:02,448 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 852 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:02,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 954 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:38:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-04-02 06:38:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 644. [2023-04-02 06:38:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 640 states have (on average 1.5109375) internal successors, (967), 640 states have internal predecessors, (967), 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 06:38:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 970 transitions. [2023-04-02 06:38:02,506 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 970 transitions. Word has length 97 [2023-04-02 06:38:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:02,506 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 970 transitions. [2023-04-02 06:38:02,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 970 transitions. [2023-04-02 06:38:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:38:02,507 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:02,507 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] [2023-04-02 06:38:02,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:38:02,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:02,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1203156639, now seen corresponding path program 1 times [2023-04-02 06:38:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:02,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510861832] [2023-04-02 06:38:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:02,671 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 06:38:02,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:02,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510861832] [2023-04-02 06:38:02,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510861832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:02,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:02,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:38:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053275863] [2023-04-02 06:38:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:38:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:38:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:38:02,673 INFO L87 Difference]: Start difference. First operand 644 states and 970 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 06:38:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:03,038 INFO L93 Difference]: Finished difference Result 1126 states and 1721 transitions. [2023-04-02 06:38:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:38:03,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:03,043 INFO L225 Difference]: With dead ends: 1126 [2023-04-02 06:38:03,043 INFO L226 Difference]: Without dead ends: 641 [2023-04-02 06:38:03,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:38:03,044 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:03,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 472 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:38:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-02 06:38:03,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2023-04-02 06:38:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 637 states have (on average 1.5023547880690737) internal successors, (957), 637 states have internal predecessors, (957), 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 06:38:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 960 transitions. [2023-04-02 06:38:03,100 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 960 transitions. Word has length 97 [2023-04-02 06:38:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:03,100 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 960 transitions. [2023-04-02 06:38:03,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 06:38:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 960 transitions. [2023-04-02 06:38:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:38:03,101 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:03,101 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] [2023-04-02 06:38:03,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:38:03,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:03,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash -340482521, now seen corresponding path program 1 times [2023-04-02 06:38:03,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:03,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455772853] [2023-04-02 06:38:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:03,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:03,392 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 06:38:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455772853] [2023-04-02 06:38:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455772853] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:03,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883354595] [2023-04-02 06:38:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:03,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:03,394 INFO L87 Difference]: Start difference. First operand 641 states and 960 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:04,400 INFO L93 Difference]: Finished difference Result 1515 states and 2310 transitions. [2023-04-02 06:38:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:04,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:04,405 INFO L225 Difference]: With dead ends: 1515 [2023-04-02 06:38:04,405 INFO L226 Difference]: Without dead ends: 1378 [2023-04-02 06:38:04,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:04,407 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1692 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:04,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 1739 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:38:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2023-04-02 06:38:04,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 777. [2023-04-02 06:38:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 773 states have (on average 1.5109961190168175) internal successors, (1168), 773 states have internal predecessors, (1168), 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 06:38:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1171 transitions. [2023-04-02 06:38:04,510 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1171 transitions. Word has length 97 [2023-04-02 06:38:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:04,511 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1171 transitions. [2023-04-02 06:38:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1171 transitions. [2023-04-02 06:38:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:38:04,511 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:04,512 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] [2023-04-02 06:38:04,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:38:04,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:04,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1264339754, now seen corresponding path program 1 times [2023-04-02 06:38:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:04,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856161106] [2023-04-02 06:38:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:04,822 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 06:38:04,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:04,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856161106] [2023-04-02 06:38:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856161106] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:04,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:04,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843804187] [2023-04-02 06:38:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:04,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:04,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:04,824 INFO L87 Difference]: Start difference. First operand 777 states and 1171 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:05,883 INFO L93 Difference]: Finished difference Result 1651 states and 2521 transitions. [2023-04-02 06:38:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:05,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:05,887 INFO L225 Difference]: With dead ends: 1651 [2023-04-02 06:38:05,887 INFO L226 Difference]: Without dead ends: 1514 [2023-04-02 06:38:05,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:05,889 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1581 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:05,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1935 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:38:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2023-04-02 06:38:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 918. [2023-04-02 06:38:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 914 states have (on average 1.5175054704595186) internal successors, (1387), 914 states have internal predecessors, (1387), 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 06:38:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1390 transitions. [2023-04-02 06:38:05,976 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1390 transitions. Word has length 97 [2023-04-02 06:38:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:05,976 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1390 transitions. [2023-04-02 06:38:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1390 transitions. [2023-04-02 06:38:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:38:05,979 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:05,979 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] [2023-04-02 06:38:05,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:38:05,980 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:05,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash -62140140, now seen corresponding path program 1 times [2023-04-02 06:38:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:05,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77547435] [2023-04-02 06:38:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:06,300 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 06:38:06,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:06,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77547435] [2023-04-02 06:38:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77547435] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:06,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724603057] [2023-04-02 06:38:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:06,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:06,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:06,302 INFO L87 Difference]: Start difference. First operand 918 states and 1390 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:07,375 INFO L93 Difference]: Finished difference Result 1797 states and 2748 transitions. [2023-04-02 06:38:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:07,380 INFO L225 Difference]: With dead ends: 1797 [2023-04-02 06:38:07,380 INFO L226 Difference]: Without dead ends: 1660 [2023-04-02 06:38:07,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:07,381 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1620 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:07,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 2173 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:38:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-04-02 06:38:07,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1069. [2023-04-02 06:38:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1065 states have (on average 1.5230046948356808) internal successors, (1622), 1065 states have internal predecessors, (1622), 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 06:38:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1625 transitions. [2023-04-02 06:38:07,496 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1625 transitions. Word has length 97 [2023-04-02 06:38:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:07,497 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1625 transitions. [2023-04-02 06:38:07,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1625 transitions. [2023-04-02 06:38:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:38:07,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:07,498 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] [2023-04-02 06:38:07,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:38:07,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:07,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 630841939, now seen corresponding path program 1 times [2023-04-02 06:38:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:07,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890808434] [2023-04-02 06:38:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:07,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:07,763 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 06:38:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890808434] [2023-04-02 06:38:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890808434] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:07,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:07,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714218191] [2023-04-02 06:38:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:07,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:07,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:07,767 INFO L87 Difference]: Start difference. First operand 1069 states and 1625 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:08,807 INFO L93 Difference]: Finished difference Result 1948 states and 2983 transitions. [2023-04-02 06:38:08,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:08,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 97 [2023-04-02 06:38:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:08,813 INFO L225 Difference]: With dead ends: 1948 [2023-04-02 06:38:08,813 INFO L226 Difference]: Without dead ends: 1811 [2023-04-02 06:38:08,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:08,814 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1816 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:08,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 2057 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:38:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2023-04-02 06:38:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1225. [2023-04-02 06:38:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1221 states have (on average 1.5274365274365274) internal successors, (1865), 1221 states have internal predecessors, (1865), 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 06:38:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1868 transitions. [2023-04-02 06:38:08,950 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1868 transitions. Word has length 97 [2023-04-02 06:38:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:08,950 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1868 transitions. [2023-04-02 06:38:08,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 06:38:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1868 transitions. [2023-04-02 06:38:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:38:08,951 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:08,951 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] [2023-04-02 06:38:08,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:38:08,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:08,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash 242755566, now seen corresponding path program 1 times [2023-04-02 06:38:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:08,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613044058] [2023-04-02 06:38:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:09,197 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 06:38:09,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:09,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613044058] [2023-04-02 06:38:09,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613044058] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:09,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:09,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:38:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061190497] [2023-04-02 06:38:09,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:09,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:38:09,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:38:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:38:09,199 INFO L87 Difference]: Start difference. First operand 1225 states and 1868 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 06:38:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:09,842 INFO L93 Difference]: Finished difference Result 2379 states and 3659 transitions. [2023-04-02 06:38:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:38:09,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 98 [2023-04-02 06:38:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:09,846 INFO L225 Difference]: With dead ends: 2379 [2023-04-02 06:38:09,846 INFO L226 Difference]: Without dead ends: 1225 [2023-04-02 06:38:09,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:09,850 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 594 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:09,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 173 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:38:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-04-02 06:38:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2023-04-02 06:38:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1221 states have (on average 1.5143325143325144) internal successors, (1849), 1221 states have internal predecessors, (1849), 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 06:38:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1852 transitions. [2023-04-02 06:38:09,993 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1852 transitions. Word has length 98 [2023-04-02 06:38:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:09,993 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1852 transitions. [2023-04-02 06:38:09,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 06:38:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1852 transitions. [2023-04-02 06:38:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:38:09,994 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:09,994 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] [2023-04-02 06:38:09,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:38:09,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:09,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 361381240, now seen corresponding path program 1 times [2023-04-02 06:38:09,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:09,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015041343] [2023-04-02 06:38:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:10,209 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 06:38:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:10,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015041343] [2023-04-02 06:38:10,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015041343] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:10,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:10,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:38:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714918838] [2023-04-02 06:38:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:38:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:38:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:38:10,210 INFO L87 Difference]: Start difference. First operand 1225 states and 1852 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 06:38:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:10,834 INFO L93 Difference]: Finished difference Result 2395 states and 3647 transitions. [2023-04-02 06:38:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:38:10,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 99 [2023-04-02 06:38:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:10,837 INFO L225 Difference]: With dead ends: 2395 [2023-04-02 06:38:10,837 INFO L226 Difference]: Without dead ends: 1225 [2023-04-02 06:38:10,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:10,839 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 632 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:10,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 141 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:38:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-04-02 06:38:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2023-04-02 06:38:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1221 states have (on average 1.5012285012285012) internal successors, (1833), 1221 states have internal predecessors, (1833), 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 06:38:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1836 transitions. [2023-04-02 06:38:10,991 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1836 transitions. Word has length 99 [2023-04-02 06:38:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:10,992 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1836 transitions. [2023-04-02 06:38:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 06:38:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1836 transitions. [2023-04-02 06:38:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:38:10,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:10,993 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] [2023-04-02 06:38:10,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:38:10,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:10,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash -538016402, now seen corresponding path program 1 times [2023-04-02 06:38:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:10,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972831292] [2023-04-02 06:38:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:11,226 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 06:38:11,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:11,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972831292] [2023-04-02 06:38:11,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972831292] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:11,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:11,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:38:11,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514488544] [2023-04-02 06:38:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:11,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:38:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:38:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:38:11,228 INFO L87 Difference]: Start difference. First operand 1225 states and 1836 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 06:38:11,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:11,975 INFO L93 Difference]: Finished difference Result 2391 states and 3611 transitions. [2023-04-02 06:38:11,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:38:11,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 100 [2023-04-02 06:38:11,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:11,979 INFO L225 Difference]: With dead ends: 2391 [2023-04-02 06:38:11,979 INFO L226 Difference]: Without dead ends: 1225 [2023-04-02 06:38:11,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:11,982 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 614 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:11,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 149 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:38:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-04-02 06:38:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2023-04-02 06:38:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1221 states have (on average 1.4881244881244882) internal successors, (1817), 1221 states have internal predecessors, (1817), 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 06:38:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1820 transitions. [2023-04-02 06:38:12,170 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1820 transitions. Word has length 100 [2023-04-02 06:38:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:12,170 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1820 transitions. [2023-04-02 06:38:12,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 06:38:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1820 transitions. [2023-04-02 06:38:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 06:38:12,171 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:12,171 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] [2023-04-02 06:38:12,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:38:12,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:12,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:12,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1632023143, now seen corresponding path program 1 times [2023-04-02 06:38:12,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:12,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267980741] [2023-04-02 06:38:12,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:12,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:12,424 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 06:38:12,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:12,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267980741] [2023-04-02 06:38:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267980741] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:38:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191067080] [2023-04-02 06:38:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:12,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:38:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:38:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:38:12,426 INFO L87 Difference]: Start difference. First operand 1225 states and 1820 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 06:38:13,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:13,060 INFO L93 Difference]: Finished difference Result 2387 states and 3575 transitions. [2023-04-02 06:38:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:38:13,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 101 [2023-04-02 06:38:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:13,064 INFO L225 Difference]: With dead ends: 2387 [2023-04-02 06:38:13,064 INFO L226 Difference]: Without dead ends: 1225 [2023-04-02 06:38:13,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:13,066 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 596 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:13,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 157 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:38:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-04-02 06:38:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2023-04-02 06:38:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1221 states have (on average 1.475020475020475) internal successors, (1801), 1221 states have internal predecessors, (1801), 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 06:38:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1804 transitions. [2023-04-02 06:38:13,223 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1804 transitions. Word has length 101 [2023-04-02 06:38:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:13,224 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1804 transitions. [2023-04-02 06:38:13,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 06:38:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1804 transitions. [2023-04-02 06:38:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:38:13,224 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:13,225 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] [2023-04-02 06:38:13,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:38:13,225 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:13,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash -497281985, now seen corresponding path program 1 times [2023-04-02 06:38:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:13,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221951771] [2023-04-02 06:38:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:13,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:13,475 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 06:38:13,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221951771] [2023-04-02 06:38:13,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221951771] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:13,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:38:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314527644] [2023-04-02 06:38:13,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:38:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:38:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:38:13,477 INFO L87 Difference]: Start difference. First operand 1225 states and 1804 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 06:38:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:14,068 INFO L93 Difference]: Finished difference Result 2383 states and 3539 transitions. [2023-04-02 06:38:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:38:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 102 [2023-04-02 06:38:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:14,072 INFO L225 Difference]: With dead ends: 2383 [2023-04-02 06:38:14,072 INFO L226 Difference]: Without dead ends: 1225 [2023-04-02 06:38:14,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:14,092 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 578 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:14,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 165 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:38:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-04-02 06:38:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2023-04-02 06:38:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1221 states have (on average 1.461916461916462) internal successors, (1785), 1221 states have internal predecessors, (1785), 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 06:38:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1788 transitions. [2023-04-02 06:38:14,255 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1788 transitions. Word has length 102 [2023-04-02 06:38:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:14,255 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1788 transitions. [2023-04-02 06:38:14,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 06:38:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1788 transitions. [2023-04-02 06:38:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:38:14,256 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:14,256 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] [2023-04-02 06:38:14,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:38:14,257 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:14,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash -40070186, now seen corresponding path program 1 times [2023-04-02 06:38:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:14,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116828673] [2023-04-02 06:38:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:14,481 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 06:38:14,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116828673] [2023-04-02 06:38:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116828673] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:14,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:38:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411506756] [2023-04-02 06:38:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:38:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:38:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:38:14,483 INFO L87 Difference]: Start difference. First operand 1225 states and 1788 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:38:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:15,285 INFO L93 Difference]: Finished difference Result 3511 states and 5177 transitions. [2023-04-02 06:38:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:38:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 103 [2023-04-02 06:38:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:15,290 INFO L225 Difference]: With dead ends: 3511 [2023-04-02 06:38:15,290 INFO L226 Difference]: Without dead ends: 2337 [2023-04-02 06:38:15,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:15,292 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 905 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:15,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 209 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:38:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2023-04-02 06:38:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2335. [2023-04-02 06:38:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2331 states have (on average 1.4676104676104675) internal successors, (3421), 2331 states have internal predecessors, (3421), 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 06:38:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3424 transitions. [2023-04-02 06:38:15,625 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3424 transitions. Word has length 103 [2023-04-02 06:38:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:15,625 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3424 transitions. [2023-04-02 06:38:15,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 06:38:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3424 transitions. [2023-04-02 06:38:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:38:15,626 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:15,626 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] [2023-04-02 06:38:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:38:15,626 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:15,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2033014437, now seen corresponding path program 1 times [2023-04-02 06:38:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:15,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638641411] [2023-04-02 06:38:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:15,971 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 06:38:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638641411] [2023-04-02 06:38:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638641411] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:15,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:38:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933911085] [2023-04-02 06:38:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:38:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:38:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:38:15,973 INFO L87 Difference]: Start difference. First operand 2335 states and 3424 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 06:38:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:16,748 INFO L93 Difference]: Finished difference Result 2875 states and 4179 transitions. [2023-04-02 06:38:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:38:16,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 104 [2023-04-02 06:38:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:16,755 INFO L225 Difference]: With dead ends: 2875 [2023-04-02 06:38:16,755 INFO L226 Difference]: Without dead ends: 2873 [2023-04-02 06:38:16,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:38:16,756 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 194 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:16,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 906 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:38:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2023-04-02 06:38:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2335. [2023-04-02 06:38:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2331 states have (on average 1.4607464607464606) internal successors, (3405), 2331 states have internal predecessors, (3405), 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 06:38:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3408 transitions. [2023-04-02 06:38:17,193 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3408 transitions. Word has length 104 [2023-04-02 06:38:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:17,193 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3408 transitions. [2023-04-02 06:38:17,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 06:38:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3408 transitions. [2023-04-02 06:38:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:38:17,194 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:17,194 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] [2023-04-02 06:38:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:38:17,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:17,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1117974352, now seen corresponding path program 1 times [2023-04-02 06:38:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:17,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541092136] [2023-04-02 06:38:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:17,583 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 06:38:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541092136] [2023-04-02 06:38:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541092136] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:17,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:38:17,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223808994] [2023-04-02 06:38:17,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:17,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:38:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:38:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:38:17,584 INFO L87 Difference]: Start difference. First operand 2335 states and 3408 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:38:19,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:19,267 INFO L93 Difference]: Finished difference Result 5693 states and 8315 transitions. [2023-04-02 06:38:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:38:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 105 [2023-04-02 06:38:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:19,276 INFO L225 Difference]: With dead ends: 5693 [2023-04-02 06:38:19,276 INFO L226 Difference]: Without dead ends: 3507 [2023-04-02 06:38:19,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:38:19,278 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1959 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:19,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 437 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:38:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2023-04-02 06:38:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 2335. [2023-04-02 06:38:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2331 states have (on average 1.4594594594594594) internal successors, (3402), 2331 states have internal predecessors, (3402), 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 06:38:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3405 transitions. [2023-04-02 06:38:19,763 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3405 transitions. Word has length 105 [2023-04-02 06:38:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3405 transitions. [2023-04-02 06:38:19,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:38:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3405 transitions. [2023-04-02 06:38:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:38:19,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:19,764 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] [2023-04-02 06:38:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:38:19,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:19,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1620025786, now seen corresponding path program 1 times [2023-04-02 06:38:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:19,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017220908] [2023-04-02 06:38:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:20,175 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 06:38:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:20,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017220908] [2023-04-02 06:38:20,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017220908] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:20,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:20,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:38:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605364127] [2023-04-02 06:38:20,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:20,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:38:20,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:38:20,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:38:20,177 INFO L87 Difference]: Start difference. First operand 2335 states and 3405 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:38:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:22,104 INFO L93 Difference]: Finished difference Result 6532 states and 9523 transitions. [2023-04-02 06:38:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:38:22,105 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 105 [2023-04-02 06:38:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:22,113 INFO L225 Difference]: With dead ends: 6532 [2023-04-02 06:38:22,113 INFO L226 Difference]: Without dead ends: 4491 [2023-04-02 06:38:22,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:38:22,116 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1383 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:22,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 460 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:38:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2023-04-02 06:38:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 2335. [2023-04-02 06:38:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2331 states have (on average 1.453882453882454) internal successors, (3389), 2331 states have internal predecessors, (3389), 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 06:38:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3392 transitions. [2023-04-02 06:38:22,652 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3392 transitions. Word has length 105 [2023-04-02 06:38:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:22,653 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3392 transitions. [2023-04-02 06:38:22,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:38:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3392 transitions. [2023-04-02 06:38:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:38:22,654 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:22,654 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] [2023-04-02 06:38:22,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:38:22,654 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:22,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash 736779055, now seen corresponding path program 1 times [2023-04-02 06:38:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:22,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268610720] [2023-04-02 06:38:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:23,158 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 06:38:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268610720] [2023-04-02 06:38:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268610720] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:23,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:23,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:38:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834528482] [2023-04-02 06:38:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:38:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:38:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:38:23,161 INFO L87 Difference]: Start difference. First operand 2335 states and 3392 transitions. Second operand has 14 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 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 06:38:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:25,484 INFO L93 Difference]: Finished difference Result 6707 states and 9768 transitions. [2023-04-02 06:38:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:38:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 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 105 [2023-04-02 06:38:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:25,492 INFO L225 Difference]: With dead ends: 6707 [2023-04-02 06:38:25,492 INFO L226 Difference]: Without dead ends: 4566 [2023-04-02 06:38:25,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:38:25,496 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1486 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:25,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 669 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:38:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2023-04-02 06:38:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 2335. [2023-04-02 06:38:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2331 states have (on average 1.45002145002145) internal successors, (3380), 2331 states have internal predecessors, (3380), 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 06:38:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3383 transitions. [2023-04-02 06:38:26,139 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3383 transitions. Word has length 105 [2023-04-02 06:38:26,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:26,140 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3383 transitions. [2023-04-02 06:38:26,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 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 06:38:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3383 transitions. [2023-04-02 06:38:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 06:38:26,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:26,141 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] [2023-04-02 06:38:26,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:38:26,141 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:26,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2031502473, now seen corresponding path program 1 times [2023-04-02 06:38:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:26,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334592912] [2023-04-02 06:38:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:26,570 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 06:38:26,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334592912] [2023-04-02 06:38:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334592912] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:26,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975721158] [2023-04-02 06:38:26,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:38:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:38:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:38:26,581 INFO L87 Difference]: Start difference. First operand 2335 states and 3383 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 8 states have internal predecessors, (103), 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 06:38:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:28,670 INFO L93 Difference]: Finished difference Result 6501 states and 9480 transitions. [2023-04-02 06:38:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:38:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 8 states have internal predecessors, (103), 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 106 [2023-04-02 06:38:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:28,678 INFO L225 Difference]: With dead ends: 6501 [2023-04-02 06:38:28,678 INFO L226 Difference]: Without dead ends: 4376 [2023-04-02 06:38:28,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:38:28,681 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 1597 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:28,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 401 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:38:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2023-04-02 06:38:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 2335. [2023-04-02 06:38:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2331 states have (on average 1.4495924495924495) internal successors, (3379), 2331 states have internal predecessors, (3379), 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 06:38:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3382 transitions. [2023-04-02 06:38:29,338 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3382 transitions. Word has length 106 [2023-04-02 06:38:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:29,339 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3382 transitions. [2023-04-02 06:38:29,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 8 states have internal predecessors, (103), 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 06:38:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3382 transitions. [2023-04-02 06:38:29,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 06:38:29,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:29,340 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] [2023-04-02 06:38:29,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:38:29,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:29,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1973458575, now seen corresponding path program 1 times [2023-04-02 06:38:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663835974] [2023-04-02 06:38:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:29,880 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 06:38:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:29,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663835974] [2023-04-02 06:38:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663835974] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:29,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:29,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:38:29,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847140119] [2023-04-02 06:38:29,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:29,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:38:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:38:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:38:29,882 INFO L87 Difference]: Start difference. First operand 2335 states and 3382 transitions. Second operand has 14 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 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 06:38:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:51,458 INFO L93 Difference]: Finished difference Result 52705 states and 76829 transitions. [2023-04-02 06:38:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 06:38:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 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 107 [2023-04-02 06:38:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:51,564 INFO L225 Difference]: With dead ends: 52705 [2023-04-02 06:38:51,564 INFO L226 Difference]: Without dead ends: 50534 [2023-04-02 06:38:51,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 06:38:51,580 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 6149 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6149 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:51,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6149 Valid, 1483 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:38:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50534 states. [2023-04-02 06:38:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50534 to 2344. [2023-04-02 06:38:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2340 states have (on average 1.4465811965811965) internal successors, (3385), 2340 states have internal predecessors, (3385), 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 06:38:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3388 transitions. [2023-04-02 06:38:52,956 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3388 transitions. Word has length 107 [2023-04-02 06:38:52,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:52,957 INFO L495 AbstractCegarLoop]: Abstraction has 2344 states and 3388 transitions. [2023-04-02 06:38:52,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 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 06:38:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3388 transitions. [2023-04-02 06:38:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:38:52,958 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:52,958 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] [2023-04-02 06:38:52,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:38:52,958 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:52,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash -403416476, now seen corresponding path program 1 times [2023-04-02 06:38:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:52,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706322704] [2023-04-02 06:38:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:52,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:53,409 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 06:38:53,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706322704] [2023-04-02 06:38:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706322704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:53,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:53,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:38:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379144512] [2023-04-02 06:38:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:53,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:38:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:38:53,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:38:53,410 INFO L87 Difference]: Start difference. First operand 2344 states and 3388 transitions. Second operand has 11 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 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 06:38:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:56,521 INFO L93 Difference]: Finished difference Result 6641 states and 9644 transitions. [2023-04-02 06:38:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:38:56,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 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 108 [2023-04-02 06:38:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:56,530 INFO L225 Difference]: With dead ends: 6641 [2023-04-02 06:38:56,531 INFO L226 Difference]: Without dead ends: 4545 [2023-04-02 06:38:56,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:38:56,534 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1649 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:56,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 485 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:38:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2023-04-02 06:38:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 2344. [2023-04-02 06:38:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2340 states have (on average 1.4418803418803419) internal successors, (3374), 2340 states have internal predecessors, (3374), 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 06:38:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3377 transitions. [2023-04-02 06:38:57,657 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3377 transitions. Word has length 108 [2023-04-02 06:38:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:57,658 INFO L495 AbstractCegarLoop]: Abstraction has 2344 states and 3377 transitions. [2023-04-02 06:38:57,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 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 06:38:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3377 transitions. [2023-04-02 06:38:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:38:57,659 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:57,659 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] [2023-04-02 06:38:57,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:38:57,659 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:57,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2066316686, now seen corresponding path program 1 times [2023-04-02 06:38:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099569107] [2023-04-02 06:38:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:58,337 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 06:38:58,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:58,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099569107] [2023-04-02 06:38:58,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099569107] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:58,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:58,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:38:58,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939815529] [2023-04-02 06:38:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:58,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:38:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:38:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:38:58,339 INFO L87 Difference]: Start difference. First operand 2344 states and 3377 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:04,810 INFO L93 Difference]: Finished difference Result 9307 states and 13545 transitions. [2023-04-02 06:39:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:39:04,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 109 [2023-04-02 06:39:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:04,821 INFO L225 Difference]: With dead ends: 9307 [2023-04-02 06:39:04,821 INFO L226 Difference]: Without dead ends: 8721 [2023-04-02 06:39:04,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:39:04,823 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1695 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:04,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 1973 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:39:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8721 states. [2023-04-02 06:39:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8721 to 2322. [2023-04-02 06:39:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2318 states have (on average 1.4387402933563416) internal successors, (3335), 2318 states have internal predecessors, (3335), 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 06:39:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3338 transitions. [2023-04-02 06:39:06,130 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3338 transitions. Word has length 109 [2023-04-02 06:39:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:06,130 INFO L495 AbstractCegarLoop]: Abstraction has 2322 states and 3338 transitions. [2023-04-02 06:39:06,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3338 transitions. [2023-04-02 06:39:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:39:06,131 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:06,132 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] [2023-04-02 06:39:06,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:39:06,132 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:06,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:06,132 INFO L85 PathProgramCache]: Analyzing trace with hash -53485136, now seen corresponding path program 1 times [2023-04-02 06:39:06,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:06,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048327662] [2023-04-02 06:39:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:06,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:06,806 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 06:39:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048327662] [2023-04-02 06:39:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048327662] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:39:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725555300] [2023-04-02 06:39:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:39:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:39:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:06,808 INFO L87 Difference]: Start difference. First operand 2322 states and 3338 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:14,067 INFO L93 Difference]: Finished difference Result 9230 states and 13422 transitions. [2023-04-02 06:39:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:39:14,068 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 109 [2023-04-02 06:39:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:14,079 INFO L225 Difference]: With dead ends: 9230 [2023-04-02 06:39:14,079 INFO L226 Difference]: Without dead ends: 8624 [2023-04-02 06:39:14,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:39:14,086 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1393 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:14,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 2422 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:39:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2023-04-02 06:39:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 2280. [2023-04-02 06:39:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2276 states have (on average 1.4384885764499122) internal successors, (3274), 2276 states have internal predecessors, (3274), 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 06:39:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3277 transitions. [2023-04-02 06:39:15,521 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3277 transitions. Word has length 109 [2023-04-02 06:39:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:15,521 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3277 transitions. [2023-04-02 06:39:15,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3277 transitions. [2023-04-02 06:39:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:39:15,522 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:15,522 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] [2023-04-02 06:39:15,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:39:15,522 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:15,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1210431794, now seen corresponding path program 1 times [2023-04-02 06:39:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:15,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575570164] [2023-04-02 06:39:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:16,121 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 06:39:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575570164] [2023-04-02 06:39:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575570164] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:16,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:16,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:39:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731142518] [2023-04-02 06:39:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:16,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:39:16,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:16,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:39:16,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:16,123 INFO L87 Difference]: Start difference. First operand 2280 states and 3277 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:24,121 INFO L93 Difference]: Finished difference Result 9060 states and 13192 transitions. [2023-04-02 06:39:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:39:24,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 109 [2023-04-02 06:39:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:24,131 INFO L225 Difference]: With dead ends: 9060 [2023-04-02 06:39:24,131 INFO L226 Difference]: Without dead ends: 8494 [2023-04-02 06:39:24,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:39:24,133 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1323 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:24,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 2199 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:39:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8494 states. [2023-04-02 06:39:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8494 to 2263. [2023-04-02 06:39:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2259 states have (on average 1.4364763169544046) internal successors, (3245), 2259 states have internal predecessors, (3245), 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 06:39:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3248 transitions. [2023-04-02 06:39:25,722 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3248 transitions. Word has length 109 [2023-04-02 06:39:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:25,723 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 3248 transitions. [2023-04-02 06:39:25,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3248 transitions. [2023-04-02 06:39:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:39:25,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:25,724 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] [2023-04-02 06:39:25,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:39:25,724 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:25,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1449134767, now seen corresponding path program 1 times [2023-04-02 06:39:25,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:25,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874604029] [2023-04-02 06:39:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:26,305 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 06:39:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:26,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874604029] [2023-04-02 06:39:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874604029] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:26,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:26,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:39:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925130482] [2023-04-02 06:39:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:39:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:39:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:26,307 INFO L87 Difference]: Start difference. First operand 2263 states and 3248 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:31,832 INFO L93 Difference]: Finished difference Result 5435 states and 7880 transitions. [2023-04-02 06:39:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:39:31,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 109 [2023-04-02 06:39:31,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:31,838 INFO L225 Difference]: With dead ends: 5435 [2023-04-02 06:39:31,838 INFO L226 Difference]: Without dead ends: 4829 [2023-04-02 06:39:31,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:39:31,839 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1714 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:31,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 2387 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:39:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2023-04-02 06:39:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 2200. [2023-04-02 06:39:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2196 states have (on average 1.4408014571948997) internal successors, (3164), 2196 states have internal predecessors, (3164), 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 06:39:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3167 transitions. [2023-04-02 06:39:33,522 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3167 transitions. Word has length 109 [2023-04-02 06:39:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:33,522 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3167 transitions. [2023-04-02 06:39:33,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3167 transitions. [2023-04-02 06:39:33,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:39:33,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:33,523 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] [2023-04-02 06:39:33,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:39:33,523 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:33,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1245834286, now seen corresponding path program 1 times [2023-04-02 06:39:33,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:33,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210252009] [2023-04-02 06:39:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:33,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:34,155 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 06:39:34,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:34,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210252009] [2023-04-02 06:39:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210252009] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:34,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:34,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:39:34,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431067939] [2023-04-02 06:39:34,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:34,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:39:34,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:34,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:39:34,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:34,158 INFO L87 Difference]: Start difference. First operand 2200 states and 3167 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:43,171 INFO L93 Difference]: Finished difference Result 8850 states and 12908 transitions. [2023-04-02 06:39:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:39:43,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 109 [2023-04-02 06:39:43,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:43,180 INFO L225 Difference]: With dead ends: 8850 [2023-04-02 06:39:43,180 INFO L226 Difference]: Without dead ends: 8305 [2023-04-02 06:39:43,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:39:43,182 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1273 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:43,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 2104 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:39:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8305 states. [2023-04-02 06:39:45,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8305 to 2197. [2023-04-02 06:39:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2193 states have (on average 1.4400364797081624) internal successors, (3158), 2193 states have internal predecessors, (3158), 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 06:39:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3161 transitions. [2023-04-02 06:39:45,080 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3161 transitions. Word has length 109 [2023-04-02 06:39:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:45,080 INFO L495 AbstractCegarLoop]: Abstraction has 2197 states and 3161 transitions. [2023-04-02 06:39:45,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:39:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3161 transitions. [2023-04-02 06:39:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 06:39:45,081 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:45,081 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] [2023-04-02 06:39:45,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:39:45,081 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:45,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 488615389, now seen corresponding path program 1 times [2023-04-02 06:39:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:45,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586123038] [2023-04-02 06:39:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:45,943 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 06:39:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:45,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586123038] [2023-04-02 06:39:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586123038] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 06:39:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716869257] [2023-04-02 06:39:45,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:45,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 06:39:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 06:39:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-04-02 06:39:45,945 INFO L87 Difference]: Start difference. First operand 2197 states and 3161 transitions. Second operand has 18 states, 18 states have (on average 5.944444444444445) internal successors, (107), 17 states have internal predecessors, (107), 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 06:39:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:53,569 INFO L93 Difference]: Finished difference Result 6416 states and 9335 transitions. [2023-04-02 06:39:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 06:39:53,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.944444444444445) internal successors, (107), 17 states have internal predecessors, (107), 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 110 [2023-04-02 06:39:53,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:53,576 INFO L225 Difference]: With dead ends: 6416 [2023-04-02 06:39:53,576 INFO L226 Difference]: Without dead ends: 5853 [2023-04-02 06:39:53,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 06:39:53,577 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1666 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 4133 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:53,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 4133 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:39:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2023-04-02 06:39:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 2194. [2023-04-02 06:39:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2190 states have (on average 1.4401826484018265) internal successors, (3154), 2190 states have internal predecessors, (3154), 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 06:39:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3157 transitions. [2023-04-02 06:39:55,550 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3157 transitions. Word has length 110 [2023-04-02 06:39:55,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:55,550 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3157 transitions. [2023-04-02 06:39:55,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.944444444444445) internal successors, (107), 17 states have internal predecessors, (107), 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 06:39:55,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3157 transitions. [2023-04-02 06:39:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 06:39:55,551 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:55,551 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] [2023-04-02 06:39:55,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:39:55,551 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:55,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1196680016, now seen corresponding path program 1 times [2023-04-02 06:39:55,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:55,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740685505] [2023-04-02 06:39:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:55,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:55,902 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 06:39:55,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740685505] [2023-04-02 06:39:55,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740685505] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:55,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:55,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:39:55,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353118080] [2023-04-02 06:39:55,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:55,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:39:55,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:55,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:39:55,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:39:55,904 INFO L87 Difference]: Start difference. First operand 2194 states and 3157 transitions. Second operand has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 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 06:40:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:01,069 INFO L93 Difference]: Finished difference Result 6394 states and 9262 transitions. [2023-04-02 06:40:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:40:01,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 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 110 [2023-04-02 06:40:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:01,074 INFO L225 Difference]: With dead ends: 6394 [2023-04-02 06:40:01,075 INFO L226 Difference]: Without dead ends: 4318 [2023-04-02 06:40:01,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:40:01,078 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 968 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:01,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 611 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:40:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2023-04-02 06:40:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 2188. [2023-04-02 06:40:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2184 states have (on average 1.440018315018315) internal successors, (3145), 2184 states have internal predecessors, (3145), 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 06:40:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3148 transitions. [2023-04-02 06:40:03,105 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3148 transitions. Word has length 110 [2023-04-02 06:40:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:03,105 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3148 transitions. [2023-04-02 06:40:03,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 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 06:40:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3148 transitions. [2023-04-02 06:40:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-02 06:40:03,105 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:03,106 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] [2023-04-02 06:40:03,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:40:03,106 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:03,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1219630442, now seen corresponding path program 1 times [2023-04-02 06:40:03,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:03,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670817175] [2023-04-02 06:40:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:03,670 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 06:40:03,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670817175] [2023-04-02 06:40:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670817175] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:40:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393286957] [2023-04-02 06:40:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:03,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:40:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:40:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:40:03,672 INFO L87 Difference]: Start difference. First operand 2188 states and 3148 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 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 06:40:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:13,711 INFO L93 Difference]: Finished difference Result 8816 states and 12861 transitions. [2023-04-02 06:40:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:40:13,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 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 111 [2023-04-02 06:40:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:13,720 INFO L225 Difference]: With dead ends: 8816 [2023-04-02 06:40:13,720 INFO L226 Difference]: Without dead ends: 8248 [2023-04-02 06:40:13,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:40:13,723 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1220 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:13,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1583 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:40:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2023-04-02 06:40:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 2162. [2023-04-02 06:40:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2158 states have (on average 1.4430027803521779) internal successors, (3114), 2158 states have internal predecessors, (3114), 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 06:40:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3117 transitions. [2023-04-02 06:40:15,899 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3117 transitions. Word has length 111 [2023-04-02 06:40:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:15,899 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 3117 transitions. [2023-04-02 06:40:15,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 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 06:40:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3117 transitions. [2023-04-02 06:40:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 06:40:15,901 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:15,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:15,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:40:15,901 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:15,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash -509407992, now seen corresponding path program 1 times [2023-04-02 06:40:15,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:15,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491366210] [2023-04-02 06:40:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:15,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:40:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491366210] [2023-04-02 06:40:16,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491366210] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:16,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:16,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:40:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958563970] [2023-04-02 06:40:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:16,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:40:16,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:16,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:40:16,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:40:16,166 INFO L87 Difference]: Start difference. First operand 2162 states and 3117 transitions. Second operand has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 06:40:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:27,967 INFO L93 Difference]: Finished difference Result 12314 states and 17945 transitions. [2023-04-02 06:40:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:40:27,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 143 [2023-04-02 06:40:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:27,980 INFO L225 Difference]: With dead ends: 12314 [2023-04-02 06:40:27,980 INFO L226 Difference]: Without dead ends: 10286 [2023-04-02 06:40:27,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:40:27,985 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1984 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:27,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1984 Valid, 432 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:40:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2023-04-02 06:40:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 4488. [2023-04-02 06:40:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4484 states have (on average 1.4507136485280998) internal successors, (6505), 4484 states have internal predecessors, (6505), 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 06:40:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6508 transitions. [2023-04-02 06:40:32,513 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6508 transitions. Word has length 143 [2023-04-02 06:40:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:32,514 INFO L495 AbstractCegarLoop]: Abstraction has 4488 states and 6508 transitions. [2023-04-02 06:40:32,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 06:40:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6508 transitions. [2023-04-02 06:40:32,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 06:40:32,516 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:32,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:32,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:40:32,516 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:32,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:32,516 INFO L85 PathProgramCache]: Analyzing trace with hash 776575606, now seen corresponding path program 1 times [2023-04-02 06:40:32,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:32,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139429775] [2023-04-02 06:40:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:32,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:40:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139429775] [2023-04-02 06:40:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139429775] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:32,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:40:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351138735] [2023-04-02 06:40:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:32,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:40:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:32,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:40:32,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:40:32,753 INFO L87 Difference]: Start difference. First operand 4488 states and 6508 transitions. Second operand has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 06:40:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:55,406 INFO L93 Difference]: Finished difference Result 24784 states and 36040 transitions. [2023-04-02 06:40:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:40:55,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 143 [2023-04-02 06:40:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:55,433 INFO L225 Difference]: With dead ends: 24784 [2023-04-02 06:40:55,434 INFO L226 Difference]: Without dead ends: 20430 [2023-04-02 06:40:55,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:40:55,442 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1817 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:55,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 436 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:40:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2023-04-02 06:41:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 9440. [2023-04-02 06:41:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9440 states, 9436 states have (on average 1.4526282323018227) internal successors, (13707), 9436 states have internal predecessors, (13707), 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 06:41:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9440 states to 9440 states and 13710 transitions. [2023-04-02 06:41:04,915 INFO L78 Accepts]: Start accepts. Automaton has 9440 states and 13710 transitions. Word has length 143 [2023-04-02 06:41:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:41:04,915 INFO L495 AbstractCegarLoop]: Abstraction has 9440 states and 13710 transitions. [2023-04-02 06:41:04,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 06:41:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 9440 states and 13710 transitions. [2023-04-02 06:41:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 06:41:04,918 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:41:04,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:04,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:41:04,918 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:41:04,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:41:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash 156136191, now seen corresponding path program 1 times [2023-04-02 06:41:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:41:04,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182791904] [2023-04-02 06:41:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:41:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:41:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:41:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:41:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:41:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182791904] [2023-04-02 06:41:05,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182791904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:41:05,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:41:05,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:41:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456008471] [2023-04-02 06:41:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:41:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:41:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:41:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:41:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:41:05,147 INFO L87 Difference]: Start difference. First operand 9440 states and 13710 transitions. Second operand has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 06:41:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:41:46,392 INFO L93 Difference]: Finished difference Result 47624 states and 68930 transitions. [2023-04-02 06:41:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:41:46,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 143 [2023-04-02 06:41:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:41:46,451 INFO L225 Difference]: With dead ends: 47624 [2023-04-02 06:41:46,451 INFO L226 Difference]: Without dead ends: 38318 [2023-04-02 06:41:46,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:41:46,469 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1475 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:41:46,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 446 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:41:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38318 states. [2023-04-02 06:42:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38318 to 19944. [2023-04-02 06:42:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19944 states, 19940 states have (on average 1.4519057171514544) internal successors, (28951), 19940 states have internal predecessors, (28951), 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 06:42:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19944 states to 19944 states and 28954 transitions. [2023-04-02 06:42:06,467 INFO L78 Accepts]: Start accepts. Automaton has 19944 states and 28954 transitions. Word has length 143 [2023-04-02 06:42:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:06,467 INFO L495 AbstractCegarLoop]: Abstraction has 19944 states and 28954 transitions. [2023-04-02 06:42:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 06:42:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 19944 states and 28954 transitions. [2023-04-02 06:42:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 06:42:06,470 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:06,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:06,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-02 06:42:06,471 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:06,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash 578704645, now seen corresponding path program 1 times [2023-04-02 06:42:06,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:06,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945875710] [2023-04-02 06:42:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:06,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:06,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:06,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945875710] [2023-04-02 06:42:06,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945875710] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:06,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:06,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:42:06,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37719817] [2023-04-02 06:42:06,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:06,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:42:06,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:42:06,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:42:06,713 INFO L87 Difference]: Start difference. First operand 19944 states and 28954 transitions. Second operand has 8 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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)