/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.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:36:00,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:36:00,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:36:00,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:36:00,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:36:00,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:36:00,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:36:00,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:36:00,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:36:00,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:36:00,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:36:00,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:36:00,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:36:00,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:36:00,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:36:00,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:36:00,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:36:00,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:36:00,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:36:00,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:36:00,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:36:00,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:36:00,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:36:00,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:36:00,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:36:00,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:36:00,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:36:00,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:36:00,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:36:00,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:36:00,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:36:00,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:36:00,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:36:00,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:36:00,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:36:00,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:36:00,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:36:00,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:36:00,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:36:00,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:36:00,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:36:00,809 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 06:36:00,836 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:36:00,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:36:00,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:36:00,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:36:00,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:36:00,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:36:00,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:36:00,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:36:00,839 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:36:00,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:36:00,839 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:36:00,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:36:00,841 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:36:00,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:36:00,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:36:00,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:36:00,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:36:00,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:36:00,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:36:00,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:36:00,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:36:00,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:36:00,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:36:00,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:36:00,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:36:00,842 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:36:00,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:36:00,843 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:36:00,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:36:01,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:36:01,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:36:01,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:36:01,084 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:36:01,084 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:36:01,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:36:02,236 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:36:02,495 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:36:02,496 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:36:02,506 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38886eb90/8b33ff3e40dc46838c5bbdb33066f4ac/FLAG5bf9d7b50 [2023-04-02 06:36:02,521 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38886eb90/8b33ff3e40dc46838c5bbdb33066f4ac [2023-04-02 06:36:02,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:36:02,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:36:02,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:36:02,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:36:02,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:36:02,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:02,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab5412f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02, skipping insertion in model container [2023-04-02 06:36:02,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:02,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:36:02,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:36:02,803 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.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7834,7847] [2023-04-02 06:36:02,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:36:02,871 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:36:02,928 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.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7834,7847] [2023-04-02 06:36:02,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:36:02,965 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:36:02,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02 WrapperNode [2023-04-02 06:36:02,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:36:02,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:36:02,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:36:02,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:36:02,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:02,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:02,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:02,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:03,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:03,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:03,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:03,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:03,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:36:03,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:36:03,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:36:03,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:36:03,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (1/1) ... [2023-04-02 06:36:03,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:36:03,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:36:03,070 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 06:36:03,085 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 06:36:03,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:36:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:36:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:36:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:36:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:36:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:36:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:36:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:36:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:36:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:36:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:36:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:36:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:36:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:36:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:36:03,273 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:36:03,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:36:03,957 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:36:03,964 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:36:03,964 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:36:03,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:36:03 BoogieIcfgContainer [2023-04-02 06:36:03,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:36:03,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:36:03,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:36:03,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:36:03,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:36:02" (1/3) ... [2023-04-02 06:36:03,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0f428b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:36:03, skipping insertion in model container [2023-04-02 06:36:03,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:36:02" (2/3) ... [2023-04-02 06:36:03,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0f428b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:36:03, skipping insertion in model container [2023-04-02 06:36:03,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:36:03" (3/3) ... [2023-04-02 06:36:03,974 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:36:03,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:36:03,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:36:04,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:36:04,032 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;@6eda23b6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:36:04,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:36:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 148 states have (on average 1.75) internal successors, (259), 150 states have internal predecessors, (259), 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 06:36:04,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:36:04,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:04,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:04,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:04,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1430393227, now seen corresponding path program 1 times [2023-04-02 06:36:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68637799] [2023-04-02 06:36:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:04,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:04,905 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 06:36:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68637799] [2023-04-02 06:36:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68637799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:04,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:04,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661996586] [2023-04-02 06:36:04,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:04,962 INFO L87 Difference]: Start difference. First operand has 155 states, 148 states have (on average 1.75) internal successors, (259), 150 states have internal predecessors, (259), 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 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 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 06:36:06,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:06,494 INFO L93 Difference]: Finished difference Result 854 states and 1356 transitions. [2023-04-02 06:36:06,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:36:06,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 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 79 [2023-04-02 06:36:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:06,515 INFO L225 Difference]: With dead ends: 854 [2023-04-02 06:36:06,515 INFO L226 Difference]: Without dead ends: 744 [2023-04-02 06:36:06,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:36:06,520 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1437 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:06,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2389 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:36:06,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-04-02 06:36:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 228. [2023-04-02 06:36:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 224 states have (on average 1.4508928571428572) internal successors, (325), 224 states have internal predecessors, (325), 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 06:36:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2023-04-02 06:36:06,581 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 79 [2023-04-02 06:36:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:06,582 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2023-04-02 06:36:06,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 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 06:36:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2023-04-02 06:36:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:36:06,584 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:06,584 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] [2023-04-02 06:36:06,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:36:06,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:06,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2085781529, now seen corresponding path program 1 times [2023-04-02 06:36:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:06,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424162780] [2023-04-02 06:36:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:06,973 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 06:36:06,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424162780] [2023-04-02 06:36:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424162780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:06,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212835382] [2023-04-02 06:36:06,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:06,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:06,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:06,978 INFO L87 Difference]: Start difference. First operand 228 states and 328 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:08,098 INFO L93 Difference]: Finished difference Result 912 states and 1403 transitions. [2023-04-02 06:36:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 81 [2023-04-02 06:36:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:08,102 INFO L225 Difference]: With dead ends: 912 [2023-04-02 06:36:08,103 INFO L226 Difference]: Without dead ends: 794 [2023-04-02 06:36:08,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:36:08,105 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 909 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:08,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1354 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:36:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-04-02 06:36:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 286. [2023-04-02 06:36:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.4787234042553192) internal successors, (417), 282 states have internal predecessors, (417), 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 06:36:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 420 transitions. [2023-04-02 06:36:08,141 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 420 transitions. Word has length 81 [2023-04-02 06:36:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:08,142 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 420 transitions. [2023-04-02 06:36:08,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 420 transitions. [2023-04-02 06:36:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:36:08,143 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:08,143 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] [2023-04-02 06:36:08,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:36:08,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:08,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1939507288, now seen corresponding path program 1 times [2023-04-02 06:36:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:08,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720946891] [2023-04-02 06:36:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:08,453 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 06:36:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720946891] [2023-04-02 06:36:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720946891] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:08,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535860097] [2023-04-02 06:36:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:08,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:08,457 INFO L87 Difference]: Start difference. First operand 286 states and 420 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:09,418 INFO L93 Difference]: Finished difference Result 981 states and 1512 transitions. [2023-04-02 06:36:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:09,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 81 [2023-04-02 06:36:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:09,423 INFO L225 Difference]: With dead ends: 981 [2023-04-02 06:36:09,424 INFO L226 Difference]: Without dead ends: 863 [2023-04-02 06:36:09,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:36:09,432 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1085 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:09,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1271 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:36:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-04-02 06:36:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 429. [2023-04-02 06:36:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.5129411764705882) internal successors, (643), 425 states have internal predecessors, (643), 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 06:36:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 646 transitions. [2023-04-02 06:36:09,496 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 646 transitions. Word has length 81 [2023-04-02 06:36:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:09,497 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 646 transitions. [2023-04-02 06:36:09,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 646 transitions. [2023-04-02 06:36:09,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:36:09,504 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:09,505 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] [2023-04-02 06:36:09,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:36:09,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:09,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1882801346, now seen corresponding path program 1 times [2023-04-02 06:36:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:09,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658339831] [2023-04-02 06:36:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:09,820 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 06:36:09,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:09,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658339831] [2023-04-02 06:36:09,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658339831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:09,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:09,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:09,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32236815] [2023-04-02 06:36:09,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:09,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:09,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:09,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:09,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:09,823 INFO L87 Difference]: Start difference. First operand 429 states and 646 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:10,594 INFO L93 Difference]: Finished difference Result 1045 states and 1613 transitions. [2023-04-02 06:36:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:10,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 81 [2023-04-02 06:36:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:10,604 INFO L225 Difference]: With dead ends: 1045 [2023-04-02 06:36:10,604 INFO L226 Difference]: Without dead ends: 927 [2023-04-02 06:36:10,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:36:10,614 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1253 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:10,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1275 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:36:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2023-04-02 06:36:10,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 488. [2023-04-02 06:36:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 484 states have (on average 1.5206611570247934) internal successors, (736), 484 states have internal predecessors, (736), 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 06:36:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 739 transitions. [2023-04-02 06:36:10,695 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 739 transitions. Word has length 81 [2023-04-02 06:36:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:10,697 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 739 transitions. [2023-04-02 06:36:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 739 transitions. [2023-04-02 06:36:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:36:10,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:10,698 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] [2023-04-02 06:36:10,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:36:10,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:10,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1867074996, now seen corresponding path program 1 times [2023-04-02 06:36:10,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:10,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791872789] [2023-04-02 06:36:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:10,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:10,896 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 06:36:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:10,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791872789] [2023-04-02 06:36:10,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791872789] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:10,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:10,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:36:10,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973897148] [2023-04-02 06:36:10,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:10,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:36:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:36:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:36:10,899 INFO L87 Difference]: Start difference. First operand 488 states and 739 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 06:36:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:11,240 INFO L93 Difference]: Finished difference Result 843 states and 1298 transitions. [2023-04-02 06:36:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:36:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 81 [2023-04-02 06:36:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:11,243 INFO L225 Difference]: With dead ends: 843 [2023-04-02 06:36:11,243 INFO L226 Difference]: Without dead ends: 487 [2023-04-02 06:36:11,244 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 06:36:11,245 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:11,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 394 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-04-02 06:36:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2023-04-02 06:36:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 483 states have (on average 1.5093167701863355) internal successors, (729), 483 states have internal predecessors, (729), 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 06:36:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 732 transitions. [2023-04-02 06:36:11,296 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 732 transitions. Word has length 81 [2023-04-02 06:36:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:11,297 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 732 transitions. [2023-04-02 06:36:11,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 06:36:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 732 transitions. [2023-04-02 06:36:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:36:11,298 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:11,298 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] [2023-04-02 06:36:11,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:36:11,298 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:11,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2073973491, now seen corresponding path program 1 times [2023-04-02 06:36:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988143489] [2023-04-02 06:36:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:11,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:11,748 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 06:36:11,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:11,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988143489] [2023-04-02 06:36:11,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988143489] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:11,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:11,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:11,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581677627] [2023-04-02 06:36:11,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:11,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:11,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:11,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:11,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:11,751 INFO L87 Difference]: Start difference. First operand 487 states and 732 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:12,530 INFO L93 Difference]: Finished difference Result 1009 states and 1550 transitions. [2023-04-02 06:36:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:12,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 81 [2023-04-02 06:36:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:12,534 INFO L225 Difference]: With dead ends: 1009 [2023-04-02 06:36:12,534 INFO L226 Difference]: Without dead ends: 660 [2023-04-02 06:36:12,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:36:12,535 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 596 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:12,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 760 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:36:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-04-02 06:36:12,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 658. [2023-04-02 06:36:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 654 states have (on average 1.5198776758409787) internal successors, (994), 654 states have internal predecessors, (994), 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 06:36:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 997 transitions. [2023-04-02 06:36:12,631 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 997 transitions. Word has length 81 [2023-04-02 06:36:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:12,631 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 997 transitions. [2023-04-02 06:36:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 997 transitions. [2023-04-02 06:36:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:36:12,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:12,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:12,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:36:12,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:12,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash 906587901, now seen corresponding path program 1 times [2023-04-02 06:36:12,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:12,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796183051] [2023-04-02 06:36:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:12,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:12,887 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 06:36:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:12,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796183051] [2023-04-02 06:36:12,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796183051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:12,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862115856] [2023-04-02 06:36:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:12,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:12,889 INFO L87 Difference]: Start difference. First operand 658 states and 997 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:13,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:13,875 INFO L93 Difference]: Finished difference Result 1269 states and 1944 transitions. [2023-04-02 06:36:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 81 [2023-04-02 06:36:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:13,880 INFO L225 Difference]: With dead ends: 1269 [2023-04-02 06:36:13,881 INFO L226 Difference]: Without dead ends: 1152 [2023-04-02 06:36:13,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:36:13,882 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1065 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:13,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1683 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:36:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-04-02 06:36:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 779. [2023-04-02 06:36:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 775 states have (on average 1.5264516129032257) internal successors, (1183), 775 states have internal predecessors, (1183), 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 06:36:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1186 transitions. [2023-04-02 06:36:13,976 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1186 transitions. Word has length 81 [2023-04-02 06:36:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:13,977 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1186 transitions. [2023-04-02 06:36:13,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:13,977 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1186 transitions. [2023-04-02 06:36:13,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:36:13,978 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:13,978 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] [2023-04-02 06:36:13,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:36:13,978 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:13,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1269394158, now seen corresponding path program 1 times [2023-04-02 06:36:13,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:13,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488930230] [2023-04-02 06:36:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:13,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:14,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:14,263 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 06:36:14,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:14,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488930230] [2023-04-02 06:36:14,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488930230] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:14,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:14,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:36:14,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969301058] [2023-04-02 06:36:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:14,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:14,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:14,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:14,270 INFO L87 Difference]: Start difference. First operand 779 states and 1186 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:15,116 INFO L93 Difference]: Finished difference Result 1400 states and 2149 transitions. [2023-04-02 06:36:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:36:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 81 [2023-04-02 06:36:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:15,122 INFO L225 Difference]: With dead ends: 1400 [2023-04-02 06:36:15,122 INFO L226 Difference]: Without dead ends: 1283 [2023-04-02 06:36:15,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:36:15,124 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1155 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:15,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1461 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:36:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-04-02 06:36:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 910. [2023-04-02 06:36:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.532008830022075) internal successors, (1388), 906 states have internal predecessors, (1388), 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 06:36:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1391 transitions. [2023-04-02 06:36:15,223 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1391 transitions. Word has length 81 [2023-04-02 06:36:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:15,223 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1391 transitions. [2023-04-02 06:36:15,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 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 06:36:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1391 transitions. [2023-04-02 06:36:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:36:15,224 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:15,224 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] [2023-04-02 06:36:15,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:36:15,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:15,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:15,225 INFO L85 PathProgramCache]: Analyzing trace with hash -133240505, now seen corresponding path program 1 times [2023-04-02 06:36:15,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:15,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907076987] [2023-04-02 06:36:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:15,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:15,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:15,453 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 06:36:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907076987] [2023-04-02 06:36:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907076987] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:15,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:36:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858623714] [2023-04-02 06:36:15,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:15,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:36:15,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:36:15,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:36:15,482 INFO L87 Difference]: Start difference. First operand 910 states and 1391 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 06:36:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:16,043 INFO L93 Difference]: Finished difference Result 1775 states and 2735 transitions. [2023-04-02 06:36:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:36:16,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 82 [2023-04-02 06:36:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:16,047 INFO L225 Difference]: With dead ends: 1775 [2023-04-02 06:36:16,047 INFO L226 Difference]: Without dead ends: 910 [2023-04-02 06:36:16,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:36:16,051 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 534 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:16,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 121 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-04-02 06:36:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2023-04-02 06:36:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.5165562913907285) internal successors, (1374), 906 states have internal predecessors, (1374), 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 06:36:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1377 transitions. [2023-04-02 06:36:16,185 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1377 transitions. Word has length 82 [2023-04-02 06:36:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:16,185 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1377 transitions. [2023-04-02 06:36:16,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 06:36:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1377 transitions. [2023-04-02 06:36:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:36:16,186 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:16,186 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] [2023-04-02 06:36:16,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:36:16,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:16,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash 524948057, now seen corresponding path program 1 times [2023-04-02 06:36:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852344022] [2023-04-02 06:36:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:16,466 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 06:36:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852344022] [2023-04-02 06:36:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852344022] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:16,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:36:16,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319547710] [2023-04-02 06:36:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:16,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:36:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:36:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:36:16,468 INFO L87 Difference]: Start difference. First operand 910 states and 1377 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 06:36:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:17,042 INFO L93 Difference]: Finished difference Result 1771 states and 2703 transitions. [2023-04-02 06:36:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:36:17,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 83 [2023-04-02 06:36:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:17,046 INFO L225 Difference]: With dead ends: 1771 [2023-04-02 06:36:17,046 INFO L226 Difference]: Without dead ends: 910 [2023-04-02 06:36:17,048 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 06:36:17,048 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 516 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:17,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 129 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-04-02 06:36:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2023-04-02 06:36:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.5011037527593818) internal successors, (1360), 906 states have internal predecessors, (1360), 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 06:36:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1363 transitions. [2023-04-02 06:36:17,185 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1363 transitions. Word has length 83 [2023-04-02 06:36:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:17,185 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1363 transitions. [2023-04-02 06:36:17,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 06:36:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1363 transitions. [2023-04-02 06:36:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:36:17,186 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:17,186 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] [2023-04-02 06:36:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:36:17,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:17,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -652869576, now seen corresponding path program 1 times [2023-04-02 06:36:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473373592] [2023-04-02 06:36:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:17,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:17,443 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 06:36:17,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473373592] [2023-04-02 06:36:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473373592] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:17,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:17,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:36:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519887305] [2023-04-02 06:36:17,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:36:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:36:17,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:36:17,446 INFO L87 Difference]: Start difference. First operand 910 states and 1363 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 06:36:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:18,027 INFO L93 Difference]: Finished difference Result 1767 states and 2671 transitions. [2023-04-02 06:36:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:36:18,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 84 [2023-04-02 06:36:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:18,031 INFO L225 Difference]: With dead ends: 1767 [2023-04-02 06:36:18,031 INFO L226 Difference]: Without dead ends: 910 [2023-04-02 06:36:18,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:36:18,033 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 498 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:18,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 137 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-04-02 06:36:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2023-04-02 06:36:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4856512141280354) internal successors, (1346), 906 states have internal predecessors, (1346), 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 06:36:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1349 transitions. [2023-04-02 06:36:18,198 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1349 transitions. Word has length 84 [2023-04-02 06:36:18,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:18,198 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1349 transitions. [2023-04-02 06:36:18,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 06:36:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1349 transitions. [2023-04-02 06:36:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:36:18,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:18,199 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] [2023-04-02 06:36:18,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:36:18,199 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:18,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1025101736, now seen corresponding path program 1 times [2023-04-02 06:36:18,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:18,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098694692] [2023-04-02 06:36:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:18,408 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 06:36:18,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098694692] [2023-04-02 06:36:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098694692] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:18,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:36:18,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372366642] [2023-04-02 06:36:18,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:18,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:36:18,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:18,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:36:18,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:36:18,410 INFO L87 Difference]: Start difference. First operand 910 states and 1349 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:36:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:18,993 INFO L93 Difference]: Finished difference Result 1763 states and 2639 transitions. [2023-04-02 06:36:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:36:18,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 85 [2023-04-02 06:36:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:18,997 INFO L225 Difference]: With dead ends: 1763 [2023-04-02 06:36:18,997 INFO L226 Difference]: Without dead ends: 910 [2023-04-02 06:36:19,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:36:19,000 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 480 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:19,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 145 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-04-02 06:36:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2023-04-02 06:36:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4701986754966887) internal successors, (1332), 906 states have internal predecessors, (1332), 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 06:36:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1335 transitions. [2023-04-02 06:36:19,214 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1335 transitions. Word has length 85 [2023-04-02 06:36:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:19,214 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1335 transitions. [2023-04-02 06:36:19,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 06:36:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1335 transitions. [2023-04-02 06:36:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 06:36:19,215 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:19,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:19,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:36:19,216 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:19,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:19,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1005552983, now seen corresponding path program 1 times [2023-04-02 06:36:19,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:19,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645660266] [2023-04-02 06:36:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:19,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:19,437 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 06:36:19,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645660266] [2023-04-02 06:36:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645660266] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:19,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:19,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:36:19,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640879581] [2023-04-02 06:36:19,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:19,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:36:19,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:36:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:36:19,440 INFO L87 Difference]: Start difference. First operand 910 states and 1335 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 06:36:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:19,998 INFO L93 Difference]: Finished difference Result 1779 states and 2628 transitions. [2023-04-02 06:36:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:36:19,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 86 [2023-04-02 06:36:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:20,003 INFO L225 Difference]: With dead ends: 1779 [2023-04-02 06:36:20,004 INFO L226 Difference]: Without dead ends: 910 [2023-04-02 06:36:20,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:36:20,006 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 521 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:20,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 113 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-04-02 06:36:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2023-04-02 06:36:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4547461368653423) internal successors, (1318), 906 states have internal predecessors, (1318), 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 06:36:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1321 transitions. [2023-04-02 06:36:20,168 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1321 transitions. Word has length 86 [2023-04-02 06:36:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:20,169 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1321 transitions. [2023-04-02 06:36:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 06:36:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1321 transitions. [2023-04-02 06:36:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:36:20,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:20,170 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] [2023-04-02 06:36:20,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:36:20,170 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:20,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1865160436, now seen corresponding path program 1 times [2023-04-02 06:36:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:20,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926091961] [2023-04-02 06:36:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:20,512 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 06:36:20,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:20,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926091961] [2023-04-02 06:36:20,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926091961] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:20,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:20,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:36:20,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776891214] [2023-04-02 06:36:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:20,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:36:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:36:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:36:20,514 INFO L87 Difference]: Start difference. First operand 910 states and 1321 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 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 06:36:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:21,048 INFO L93 Difference]: Finished difference Result 1106 states and 1593 transitions. [2023-04-02 06:36:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:36:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 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 87 [2023-04-02 06:36:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:21,052 INFO L225 Difference]: With dead ends: 1106 [2023-04-02 06:36:21,052 INFO L226 Difference]: Without dead ends: 1104 [2023-04-02 06:36:21,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:36:21,053 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 164 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:21,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 762 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2023-04-02 06:36:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 910. [2023-04-02 06:36:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4470198675496688) internal successors, (1311), 906 states have internal predecessors, (1311), 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 06:36:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1314 transitions. [2023-04-02 06:36:21,238 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1314 transitions. Word has length 87 [2023-04-02 06:36:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:21,238 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1314 transitions. [2023-04-02 06:36:21,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 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 06:36:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1314 transitions. [2023-04-02 06:36:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:36:21,239 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:21,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:21,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:36:21,239 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:21,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1321631269, now seen corresponding path program 1 times [2023-04-02 06:36:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204051523] [2023-04-02 06:36:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:21,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:21,884 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 06:36:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:21,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204051523] [2023-04-02 06:36:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204051523] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:21,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:36:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078550077] [2023-04-02 06:36:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:21,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:36:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:36:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:36:21,887 INFO L87 Difference]: Start difference. First operand 910 states and 1314 transitions. Second operand has 14 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 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 06:36:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:23,101 INFO L93 Difference]: Finished difference Result 2518 states and 3664 transitions. [2023-04-02 06:36:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:36:23,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 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 88 [2023-04-02 06:36:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:23,108 INFO L225 Difference]: With dead ends: 2518 [2023-04-02 06:36:23,108 INFO L226 Difference]: Without dead ends: 1737 [2023-04-02 06:36:23,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:36:23,111 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1320 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:23,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 436 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:36:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2023-04-02 06:36:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 910. [2023-04-02 06:36:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4415011037527594) internal successors, (1306), 906 states have internal predecessors, (1306), 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 06:36:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1309 transitions. [2023-04-02 06:36:23,327 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1309 transitions. Word has length 88 [2023-04-02 06:36:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:23,327 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1309 transitions. [2023-04-02 06:36:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 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 06:36:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1309 transitions. [2023-04-02 06:36:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:36:23,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:23,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:36:23,328 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:23,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash 288711882, now seen corresponding path program 1 times [2023-04-02 06:36:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591830794] [2023-04-02 06:36:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:23,690 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 06:36:23,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591830794] [2023-04-02 06:36:23,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591830794] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:23,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:23,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:36:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105117134] [2023-04-02 06:36:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:36:23,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:36:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:36:23,693 INFO L87 Difference]: Start difference. First operand 910 states and 1309 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 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 06:36:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:24,700 INFO L93 Difference]: Finished difference Result 2482 states and 3613 transitions. [2023-04-02 06:36:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:36:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 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 88 [2023-04-02 06:36:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:24,706 INFO L225 Difference]: With dead ends: 2482 [2023-04-02 06:36:24,706 INFO L226 Difference]: Without dead ends: 1666 [2023-04-02 06:36:24,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:36:24,709 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1112 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:24,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 323 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:36:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-04-02 06:36:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 910. [2023-04-02 06:36:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4403973509933774) internal successors, (1305), 906 states have internal predecessors, (1305), 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 06:36:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1308 transitions. [2023-04-02 06:36:24,953 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1308 transitions. Word has length 88 [2023-04-02 06:36:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:24,954 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1308 transitions. [2023-04-02 06:36:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 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 06:36:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1308 transitions. [2023-04-02 06:36:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:36:24,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:24,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:36:24,955 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:24,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -907892207, now seen corresponding path program 1 times [2023-04-02 06:36:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:24,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231576093] [2023-04-02 06:36:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:25,545 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 06:36:25,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:25,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231576093] [2023-04-02 06:36:25,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231576093] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:25,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:25,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:36:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538362186] [2023-04-02 06:36:25,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:25,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:36:25,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:25,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:36:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:36:25,547 INFO L87 Difference]: Start difference. First operand 910 states and 1308 transitions. Second operand has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 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 06:36:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:27,686 INFO L93 Difference]: Finished difference Result 4118 states and 5954 transitions. [2023-04-02 06:36:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:36:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 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 88 [2023-04-02 06:36:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:27,695 INFO L225 Difference]: With dead ends: 4118 [2023-04-02 06:36:27,695 INFO L226 Difference]: Without dead ends: 3363 [2023-04-02 06:36:27,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:36:27,697 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1617 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:27,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 890 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:36:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2023-04-02 06:36:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 955. [2023-04-02 06:36:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 951 states have (on average 1.434279705573081) internal successors, (1364), 951 states have internal predecessors, (1364), 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 06:36:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1367 transitions. [2023-04-02 06:36:28,014 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1367 transitions. Word has length 88 [2023-04-02 06:36:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:28,014 INFO L495 AbstractCegarLoop]: Abstraction has 955 states and 1367 transitions. [2023-04-02 06:36:28,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 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 06:36:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1367 transitions. [2023-04-02 06:36:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:36:28,015 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:28,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:28,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:36:28,016 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:28,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1048184262, now seen corresponding path program 1 times [2023-04-02 06:36:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928381590] [2023-04-02 06:36:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:28,420 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 06:36:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928381590] [2023-04-02 06:36:28,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928381590] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:28,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:28,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:36:28,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032990506] [2023-04-02 06:36:28,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:28,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:36:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:36:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:36:28,440 INFO L87 Difference]: Start difference. First operand 955 states and 1367 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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 06:36:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:29,859 INFO L93 Difference]: Finished difference Result 2530 states and 3657 transitions. [2023-04-02 06:36:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:36:29,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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 89 [2023-04-02 06:36:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:29,863 INFO L225 Difference]: With dead ends: 2530 [2023-04-02 06:36:29,864 INFO L226 Difference]: Without dead ends: 1774 [2023-04-02 06:36:29,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:36:29,865 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 960 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:29,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 400 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:36:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2023-04-02 06:36:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 910. [2023-04-02 06:36:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4337748344370862) internal successors, (1299), 906 states have internal predecessors, (1299), 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 06:36:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1302 transitions. [2023-04-02 06:36:30,119 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1302 transitions. Word has length 89 [2023-04-02 06:36:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:30,119 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1302 transitions. [2023-04-02 06:36:30,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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 06:36:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1302 transitions. [2023-04-02 06:36:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:36:30,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:30,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:30,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:36:30,121 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:30,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:30,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2033036907, now seen corresponding path program 1 times [2023-04-02 06:36:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417918374] [2023-04-02 06:36:30,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:30,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:30,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:30,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417918374] [2023-04-02 06:36:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417918374] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:30,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:36:30,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772273015] [2023-04-02 06:36:30,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:30,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:36:30,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:36:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:36:30,517 INFO L87 Difference]: Start difference. First operand 910 states and 1302 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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 06:36:32,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:32,006 INFO L93 Difference]: Finished difference Result 2563 states and 3706 transitions. [2023-04-02 06:36:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:36:32,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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 89 [2023-04-02 06:36:32,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:32,011 INFO L225 Difference]: With dead ends: 2563 [2023-04-02 06:36:32,011 INFO L226 Difference]: Without dead ends: 1752 [2023-04-02 06:36:32,012 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 06:36:32,013 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 660 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:32,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 547 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:36:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2023-04-02 06:36:32,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 910. [2023-04-02 06:36:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4315673289183224) internal successors, (1297), 906 states have internal predecessors, (1297), 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 06:36:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1300 transitions. [2023-04-02 06:36:32,298 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1300 transitions. Word has length 89 [2023-04-02 06:36:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:32,298 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1300 transitions. [2023-04-02 06:36:32,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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 06:36:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1300 transitions. [2023-04-02 06:36:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 06:36:32,299 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:32,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:32,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:36:32,299 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:32,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:32,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1398579957, now seen corresponding path program 1 times [2023-04-02 06:36:32,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:32,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852904451] [2023-04-02 06:36:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:32,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:32,706 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 06:36:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852904451] [2023-04-02 06:36:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852904451] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:32,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:36:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730433722] [2023-04-02 06:36:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:32,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:36:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:36:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:36:32,708 INFO L87 Difference]: Start difference. First operand 910 states and 1300 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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 06:36:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:34,132 INFO L93 Difference]: Finished difference Result 2548 states and 3680 transitions. [2023-04-02 06:36:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:36:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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 90 [2023-04-02 06:36:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:34,138 INFO L225 Difference]: With dead ends: 2548 [2023-04-02 06:36:34,138 INFO L226 Difference]: Without dead ends: 1747 [2023-04-02 06:36:34,140 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 06:36:34,140 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1414 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:34,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 411 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:36:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2023-04-02 06:36:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 910. [2023-04-02 06:36:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.4271523178807948) internal successors, (1293), 906 states have internal predecessors, (1293), 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 06:36:34,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1296 transitions. [2023-04-02 06:36:34,469 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1296 transitions. Word has length 90 [2023-04-02 06:36:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:34,469 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1296 transitions. [2023-04-02 06:36:34,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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 06:36:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1296 transitions. [2023-04-02 06:36:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:36:34,470 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:34,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:34,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:36:34,470 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:34,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1304048823, now seen corresponding path program 1 times [2023-04-02 06:36:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:34,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72609306] [2023-04-02 06:36:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:34,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:35,210 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 06:36:35,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72609306] [2023-04-02 06:36:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72609306] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:35,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:35,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:36:35,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684491820] [2023-04-02 06:36:35,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:35,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:36:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:35,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:36:35,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:36:35,212 INFO L87 Difference]: Start difference. First operand 910 states and 1296 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 06:36:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:38,446 INFO L93 Difference]: Finished difference Result 3549 states and 5149 transitions. [2023-04-02 06:36:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:36:38,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 91 [2023-04-02 06:36:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:38,454 INFO L225 Difference]: With dead ends: 3549 [2023-04-02 06:36:38,454 INFO L226 Difference]: Without dead ends: 3285 [2023-04-02 06:36:38,456 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 06:36:38,456 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1050 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:38,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2647 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:36:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2023-04-02 06:36:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 889. [2023-04-02 06:36:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 885 states have (on average 1.4259887005649718) internal successors, (1262), 885 states have internal predecessors, (1262), 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 06:36:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1265 transitions. [2023-04-02 06:36:38,841 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1265 transitions. Word has length 91 [2023-04-02 06:36:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:38,841 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1265 transitions. [2023-04-02 06:36:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 06:36:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1265 transitions. [2023-04-02 06:36:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:36:38,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:38,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:38,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:36:38,843 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:38,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1233640757, now seen corresponding path program 1 times [2023-04-02 06:36:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667673073] [2023-04-02 06:36:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:39,540 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 06:36:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667673073] [2023-04-02 06:36:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667673073] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:39,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:36:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807311129] [2023-04-02 06:36:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:36:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:36:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:36:39,542 INFO L87 Difference]: Start difference. First operand 889 states and 1265 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 06:36:42,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:42,580 INFO L93 Difference]: Finished difference Result 3405 states and 4947 transitions. [2023-04-02 06:36:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:36:42,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 91 [2023-04-02 06:36:42,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:42,587 INFO L225 Difference]: With dead ends: 3405 [2023-04-02 06:36:42,587 INFO L226 Difference]: Without dead ends: 3171 [2023-04-02 06:36:42,588 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 06:36:42,589 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1495 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:42,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1495 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:36:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-04-02 06:36:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 888. [2023-04-02 06:36:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 884 states have (on average 1.420814479638009) internal successors, (1256), 884 states have internal predecessors, (1256), 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 06:36:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1259 transitions. [2023-04-02 06:36:43,023 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1259 transitions. Word has length 91 [2023-04-02 06:36:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:43,023 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1259 transitions. [2023-04-02 06:36:43,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 06:36:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1259 transitions. [2023-04-02 06:36:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:36:43,024 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:43,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:43,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:36:43,024 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:43,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 876425067, now seen corresponding path program 1 times [2023-04-02 06:36:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:43,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107895289] [2023-04-02 06:36:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:43,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:43,675 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 06:36:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:43,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107895289] [2023-04-02 06:36:43,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107895289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:36:43,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044709673] [2023-04-02 06:36:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:36:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:36:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:36:43,677 INFO L87 Difference]: Start difference. First operand 888 states and 1259 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 06:36:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:47,339 INFO L93 Difference]: Finished difference Result 3488 states and 5046 transitions. [2023-04-02 06:36:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:36:47,339 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 91 [2023-04-02 06:36:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:47,345 INFO L225 Difference]: With dead ends: 3488 [2023-04-02 06:36:47,345 INFO L226 Difference]: Without dead ends: 3234 [2023-04-02 06:36:47,346 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 06:36:47,346 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1006 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:47,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 2498 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:36:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2023-04-02 06:36:47,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 872. [2023-04-02 06:36:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 868 states have (on average 1.4205069124423964) internal successors, (1233), 868 states have internal predecessors, (1233), 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 06:36:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1236 transitions. [2023-04-02 06:36:47,850 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1236 transitions. Word has length 91 [2023-04-02 06:36:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:47,850 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1236 transitions. [2023-04-02 06:36:47,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 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 06:36:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1236 transitions. [2023-04-02 06:36:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:36:47,850 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:47,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:47,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:36:47,851 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:47,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash 756484329, now seen corresponding path program 1 times [2023-04-02 06:36:47,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:47,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248018868] [2023-04-02 06:36:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:47,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:48,849 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 06:36:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248018868] [2023-04-02 06:36:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248018868] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:48,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 06:36:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026113593] [2023-04-02 06:36:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 06:36:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 06:36:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-04-02 06:36:48,851 INFO L87 Difference]: Start difference. First operand 872 states and 1236 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 17 states have internal predecessors, (88), 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 06:36:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:53,808 INFO L93 Difference]: Finished difference Result 4337 states and 6302 transitions. [2023-04-02 06:36:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 06:36:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 17 states have internal predecessors, (88), 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 91 [2023-04-02 06:36:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:53,815 INFO L225 Difference]: With dead ends: 4337 [2023-04-02 06:36:53,816 INFO L226 Difference]: Without dead ends: 4083 [2023-04-02 06:36:53,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=317, Invalid=1089, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 06:36:53,818 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1804 mSDsluCounter, 4140 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:53,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 4551 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:36:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2023-04-02 06:36:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 872. [2023-04-02 06:36:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 868 states have (on average 1.4193548387096775) internal successors, (1232), 868 states have internal predecessors, (1232), 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 06:36:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1235 transitions. [2023-04-02 06:36:54,364 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1235 transitions. Word has length 91 [2023-04-02 06:36:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:54,364 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1235 transitions. [2023-04-02 06:36:54,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 17 states have internal predecessors, (88), 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 06:36:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1235 transitions. [2023-04-02 06:36:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:36:54,365 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:54,365 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] [2023-04-02 06:36:54,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:36:54,365 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:54,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1393960752, now seen corresponding path program 1 times [2023-04-02 06:36:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:54,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866000717] [2023-04-02 06:36:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:54,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:56,079 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 06:36:56,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866000717] [2023-04-02 06:36:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866000717] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:56,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:56,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-02 06:36:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598554143] [2023-04-02 06:36:56,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:56,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-02 06:36:56,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-02 06:36:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:36:56,081 INFO L87 Difference]: Start difference. First operand 872 states and 1235 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 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 06:37:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:06,418 INFO L93 Difference]: Finished difference Result 7016 states and 10209 transitions. [2023-04-02 06:37:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 06:37:06,419 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 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 92 [2023-04-02 06:37:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:06,431 INFO L225 Difference]: With dead ends: 7016 [2023-04-02 06:37:06,432 INFO L226 Difference]: Without dead ends: 6264 [2023-04-02 06:37:06,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=554, Invalid=3106, Unknown=0, NotChecked=0, Total=3660 [2023-04-02 06:37:06,437 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 2029 mSDsluCounter, 7450 mSDsCounter, 0 mSdLazyCounter, 6032 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 7846 SdHoareTripleChecker+Invalid, 6073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 6032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:06,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 7846 Invalid, 6073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 6032 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 06:37:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2023-04-02 06:37:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 893. [2023-04-02 06:37:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 889 states have (on average 1.4139482564679415) internal successors, (1257), 889 states have internal predecessors, (1257), 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 06:37:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1260 transitions. [2023-04-02 06:37:07,217 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1260 transitions. Word has length 92 [2023-04-02 06:37:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:07,217 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1260 transitions. [2023-04-02 06:37:07,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 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 06:37:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1260 transitions. [2023-04-02 06:37:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:37:07,218 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:07,220 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] [2023-04-02 06:37:07,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:37:07,220 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:07,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1109051855, now seen corresponding path program 1 times [2023-04-02 06:37:07,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:07,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457515440] [2023-04-02 06:37:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:07,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:07,859 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 06:37:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457515440] [2023-04-02 06:37:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457515440] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:07,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:07,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:37:07,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681438484] [2023-04-02 06:37:07,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:07,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:37:07,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:37:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:37:07,861 INFO L87 Difference]: Start difference. First operand 893 states and 1260 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 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 06:37:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:12,240 INFO L93 Difference]: Finished difference Result 3421 states and 4956 transitions. [2023-04-02 06:37:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:37:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 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 92 [2023-04-02 06:37:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:12,245 INFO L225 Difference]: With dead ends: 3421 [2023-04-02 06:37:12,245 INFO L226 Difference]: Without dead ends: 3173 [2023-04-02 06:37:12,246 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 06:37:12,246 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 972 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:12,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1995 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:37:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2023-04-02 06:37:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 876. [2023-04-02 06:37:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 872 states have (on average 1.4162844036697249) internal successors, (1235), 872 states have internal predecessors, (1235), 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 06:37:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1238 transitions. [2023-04-02 06:37:12,979 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1238 transitions. Word has length 92 [2023-04-02 06:37:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:12,979 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1238 transitions. [2023-04-02 06:37:12,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 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 06:37:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1238 transitions. [2023-04-02 06:37:12,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:37:12,980 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:12,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:37:12,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:37:12,980 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:12,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1664348843, now seen corresponding path program 1 times [2023-04-02 06:37:12,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:12,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216235422] [2023-04-02 06:37:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:12,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:13,511 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 06:37:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216235422] [2023-04-02 06:37:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216235422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:37:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540948247] [2023-04-02 06:37:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:13,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:37:13,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:37:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:37:13,513 INFO L87 Difference]: Start difference. First operand 876 states and 1238 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 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 06:37:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:17,676 INFO L93 Difference]: Finished difference Result 3377 states and 4900 transitions. [2023-04-02 06:37:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:37:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 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 93 [2023-04-02 06:37:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:17,681 INFO L225 Difference]: With dead ends: 3377 [2023-04-02 06:37:17,681 INFO L226 Difference]: Without dead ends: 3124 [2023-04-02 06:37:17,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:37:17,683 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 941 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:17,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1453 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:37:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2023-04-02 06:37:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 855. [2023-04-02 06:37:18,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 851 states have (on average 1.4218566392479437) internal successors, (1210), 851 states have internal predecessors, (1210), 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 06:37:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1213 transitions. [2023-04-02 06:37:18,501 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1213 transitions. Word has length 93 [2023-04-02 06:37:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:18,502 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1213 transitions. [2023-04-02 06:37:18,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 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 06:37:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1213 transitions. [2023-04-02 06:37:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:37:18,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:18,503 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] [2023-04-02 06:37:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:37:18,503 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:18,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash -405753473, now seen corresponding path program 1 times [2023-04-02 06:37:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:18,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120995806] [2023-04-02 06:37:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:18,758 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 06:37:18,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:18,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120995806] [2023-04-02 06:37:18,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120995806] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:18,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:18,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:37:18,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452433316] [2023-04-02 06:37:18,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:37:18,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:18,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:37:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:37:18,760 INFO L87 Difference]: Start difference. First operand 855 states and 1213 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:37:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:23,131 INFO L93 Difference]: Finished difference Result 4713 states and 6861 transitions. [2023-04-02 06:37:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:37:23,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 121 [2023-04-02 06:37:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:23,138 INFO L225 Difference]: With dead ends: 4713 [2023-04-02 06:37:23,138 INFO L226 Difference]: Without dead ends: 3963 [2023-04-02 06:37:23,139 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 06:37:23,140 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1166 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:23,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 460 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:37:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2023-04-02 06:37:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 1733. [2023-04-02 06:37:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1729 states have (on average 1.4407171775592829) internal successors, (2491), 1729 states have internal predecessors, (2491), 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 06:37:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2494 transitions. [2023-04-02 06:37:24,738 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2494 transitions. Word has length 121 [2023-04-02 06:37:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:24,738 INFO L495 AbstractCegarLoop]: Abstraction has 1733 states and 2494 transitions. [2023-04-02 06:37:24,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:37:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2494 transitions. [2023-04-02 06:37:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:37:24,740 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:24,740 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] [2023-04-02 06:37:24,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:37:24,740 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:24,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash 98927499, now seen corresponding path program 1 times [2023-04-02 06:37:24,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:24,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58354347] [2023-04-02 06:37:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:24,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:25,015 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 06:37:25,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:25,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58354347] [2023-04-02 06:37:25,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58354347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:25,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:25,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:37:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827185194] [2023-04-02 06:37:25,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:37:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:37:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:37:25,017 INFO L87 Difference]: Start difference. First operand 1733 states and 2494 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:37:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:33,106 INFO L93 Difference]: Finished difference Result 9441 states and 13734 transitions. [2023-04-02 06:37:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:37:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 121 [2023-04-02 06:37:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:33,117 INFO L225 Difference]: With dead ends: 9441 [2023-04-02 06:37:33,117 INFO L226 Difference]: Without dead ends: 7813 [2023-04-02 06:37:33,121 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 06:37:33,122 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1595 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:33,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 361 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:37:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2023-04-02 06:37:36,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 3619. [2023-04-02 06:37:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 3615 states have (on average 1.4481327800829875) internal successors, (5235), 3615 states have internal predecessors, (5235), 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 06:37:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 5238 transitions. [2023-04-02 06:37:36,351 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 5238 transitions. Word has length 121 [2023-04-02 06:37:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:36,351 INFO L495 AbstractCegarLoop]: Abstraction has 3619 states and 5238 transitions. [2023-04-02 06:37:36,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:37:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 5238 transitions. [2023-04-02 06:37:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:37:36,353 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:36,353 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] [2023-04-02 06:37:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:37:36,353 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:36,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash -699676479, now seen corresponding path program 1 times [2023-04-02 06:37:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394482634] [2023-04-02 06:37:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:36,593 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 06:37:36,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:36,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394482634] [2023-04-02 06:37:36,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394482634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:36,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:36,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:37:36,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707810467] [2023-04-02 06:37:36,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:36,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:37:36,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:36,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:37:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:37:36,594 INFO L87 Difference]: Start difference. First operand 3619 states and 5238 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:37:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:51,659 INFO L93 Difference]: Finished difference Result 19027 states and 27610 transitions. [2023-04-02 06:37:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:37:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 121 [2023-04-02 06:37:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:51,681 INFO L225 Difference]: With dead ends: 19027 [2023-04-02 06:37:51,681 INFO L226 Difference]: Without dead ends: 15513 [2023-04-02 06:37:51,687 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 06:37:51,688 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1428 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:51,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 365 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:37:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2023-04-02 06:37:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 7651. [2023-04-02 06:37:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 7647 states have (on average 1.4498496142278017) internal successors, (11087), 7647 states have internal predecessors, (11087), 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 06:37:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 11090 transitions. [2023-04-02 06:37:58,584 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 11090 transitions. Word has length 121 [2023-04-02 06:37:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:58,584 INFO L495 AbstractCegarLoop]: Abstraction has 7651 states and 11090 transitions. [2023-04-02 06:37:58,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:37:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 11090 transitions. [2023-04-02 06:37:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:37:58,586 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:58,586 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] [2023-04-02 06:37:58,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:37:58,586 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:58,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -190908345, now seen corresponding path program 1 times [2023-04-02 06:37:58,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696930863] [2023-04-02 06:37:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:58,844 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 06:37:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696930863] [2023-04-02 06:37:58,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696930863] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:58,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:58,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:37:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370786474] [2023-04-02 06:37:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:58,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:37:58,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:37:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:37:58,846 INFO L87 Difference]: Start difference. First operand 7651 states and 11090 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:38:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:28,205 INFO L93 Difference]: Finished difference Result 38459 states and 55622 transitions. [2023-04-02 06:38:28,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:38:28,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 121 [2023-04-02 06:38:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:28,256 INFO L225 Difference]: With dead ends: 38459 [2023-04-02 06:38:28,256 INFO L226 Difference]: Without dead ends: 30913 [2023-04-02 06:38:28,270 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 06:38:28,271 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1254 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:28,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 371 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:38:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30913 states. [2023-04-02 06:38:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30913 to 16235. [2023-04-02 06:38:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16235 states, 16231 states have (on average 1.4490173125500585) internal successors, (23519), 16231 states have internal predecessors, (23519), 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 06:38:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16235 states to 16235 states and 23522 transitions. [2023-04-02 06:38:42,712 INFO L78 Accepts]: Start accepts. Automaton has 16235 states and 23522 transitions. Word has length 121 [2023-04-02 06:38:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:42,713 INFO L495 AbstractCegarLoop]: Abstraction has 16235 states and 23522 transitions. [2023-04-02 06:38:42,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 06:38:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 16235 states and 23522 transitions. [2023-04-02 06:38:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 06:38:42,715 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:42,715 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] [2023-04-02 06:38:42,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:38:42,715 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:42,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2055117293, now seen corresponding path program 1 times [2023-04-02 06:38:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:42,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618360107] [2023-04-02 06:38:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:42,971 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 06:38:42,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618360107] [2023-04-02 06:38:42,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618360107] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:42,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:42,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:38:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432032145] [2023-04-02 06:38:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:42,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:38:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:38:42,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:38:42,973 INFO L87 Difference]: Start difference. First operand 16235 states and 23522 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 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 06:39:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:14,435 INFO L93 Difference]: Finished difference Result 50067 states and 72118 transitions. [2023-04-02 06:39:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:39:14,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 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 122 [2023-04-02 06:39:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:14,506 INFO L225 Difference]: With dead ends: 50067 [2023-04-02 06:39:14,506 INFO L226 Difference]: Without dead ends: 33937 [2023-04-02 06:39:14,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:39:14,535 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1256 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:14,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 305 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:39:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33937 states. [2023-04-02 06:39:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33937 to 18843. [2023-04-02 06:39:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18843 states, 18839 states have (on average 1.4310207548171348) internal successors, (26959), 18839 states have internal predecessors, (26959), 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 06:39:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18843 states to 18843 states and 26962 transitions. [2023-04-02 06:39:31,499 INFO L78 Accepts]: Start accepts. Automaton has 18843 states and 26962 transitions. Word has length 122 [2023-04-02 06:39:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:31,500 INFO L495 AbstractCegarLoop]: Abstraction has 18843 states and 26962 transitions. [2023-04-02 06:39:31,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 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 06:39:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 18843 states and 26962 transitions. [2023-04-02 06:39:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 06:39:31,507 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:31,508 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:31,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:39:31,508 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:31,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1377915210, now seen corresponding path program 1 times [2023-04-02 06:39:31,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:31,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374961761] [2023-04-02 06:39:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:31,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 06:39:31,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374961761] [2023-04-02 06:39:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374961761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:31,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:31,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:31,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982280220] [2023-04-02 06:39:31,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:31,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:31,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:31,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:31,753 INFO L87 Difference]: Start difference. First operand 18843 states and 26962 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 06:39:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:48,295 INFO L93 Difference]: Finished difference Result 36335 states and 51940 transitions. [2023-04-02 06:39:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:48,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2023-04-02 06:39:48,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:48,319 INFO L225 Difference]: With dead ends: 36335 [2023-04-02 06:39:48,319 INFO L226 Difference]: Without dead ends: 17597 [2023-04-02 06:39:48,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:48,340 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 76 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 371 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:39:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17597 states. [2023-04-02 06:40:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17597 to 13379. [2023-04-02 06:40:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13375 states have (on average 1.4127102803738318) internal successors, (18895), 13375 states have internal predecessors, (18895), 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 06:40:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 18898 transitions. [2023-04-02 06:40:01,071 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 18898 transitions. Word has length 148 [2023-04-02 06:40:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:01,071 INFO L495 AbstractCegarLoop]: Abstraction has 13379 states and 18898 transitions. [2023-04-02 06:40:01,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 06:40:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 18898 transitions. [2023-04-02 06:40:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 06:40:01,078 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:01,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:01,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-02 06:40:01,078 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:01,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -428804238, now seen corresponding path program 1 times [2023-04-02 06:40:01,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:01,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923923150] [2023-04-02 06:40:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:01,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 06:40:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923923150] [2023-04-02 06:40:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923923150] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:01,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:40:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010152849] [2023-04-02 06:40:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:40:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:40:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:40:01,328 INFO L87 Difference]: Start difference. First operand 13379 states and 18898 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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)