/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:43:23,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:43:23,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:43:24,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:43:24,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:43:24,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:43:24,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:43:24,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:43:24,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:43:24,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:43:24,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:43:24,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:43:24,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:43:24,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:43:24,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:43:24,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:43:24,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:43:24,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:43:24,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:43:24,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:43:24,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:43:24,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:43:24,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:43:24,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:43:24,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:43:24,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:43:24,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:43:24,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:43:24,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:43:24,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:43:24,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:43:24,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:43:24,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:43:24,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:43:24,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:43:24,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:43:24,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:43:24,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:43:24,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:43:24,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:43:24,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:43:24,055 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 [2023-03-31 01:43:24,074 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:43:24,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:43:24,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:43:24,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:43:24,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:43:24,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:43:24,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:43:24,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:43:24,080 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:43:24,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:43:24,080 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:43:24,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:43:24,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:43:24,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:43:24,082 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:43:24,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:43:24,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:43:24,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:43:24,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:43:24,301 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:43:24,302 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:43:24,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-03-31 01:43:25,463 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:43:25,753 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:43:25,753 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-03-31 01:43:25,765 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63526bb0d/e7e2d6e5e86b495ebd817a42bdf65b7f/FLAG2ecffd49d [2023-03-31 01:43:25,777 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63526bb0d/e7e2d6e5e86b495ebd817a42bdf65b7f [2023-03-31 01:43:25,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:43:25,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:43:25,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:43:25,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:43:25,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:43:25,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:43:25" (1/1) ... [2023-03-31 01:43:25,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330a2873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:25, skipping insertion in model container [2023-03-31 01:43:25,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:43:25" (1/1) ... [2023-03-31 01:43:25,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:43:25,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:43:26,220 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[24251,24264] [2023-03-31 01:43:26,259 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[28044,28057] [2023-03-31 01:43:26,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:43:26,444 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:43:26,604 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[24251,24264] [2023-03-31 01:43:26,628 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[28044,28057] [2023-03-31 01:43:26,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:43:26,718 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:43:26,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26 WrapperNode [2023-03-31 01:43:26,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:43:26,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:43:26,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:43:26,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:43:26,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,847 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:43:26,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:43:26,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:43:26,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:43:26,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (1/1) ... [2023-03-31 01:43:26,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:43:26,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:43:26,912 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) [2023-03-31 01:43:26,933 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 [2023-03-31 01:43:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:43:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:43:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:43:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:43:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:43:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:43:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:43:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:43:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:43:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:43:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:43:27,186 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:43:27,188 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:43:28,536 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:43:28,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:43:28,553 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:43:28,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:43:28 BoogieIcfgContainer [2023-03-31 01:43:28,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:43:28,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:43:28,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:43:28,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:43:28,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:43:25" (1/3) ... [2023-03-31 01:43:28,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6770c720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:43:28, skipping insertion in model container [2023-03-31 01:43:28,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:26" (2/3) ... [2023-03-31 01:43:28,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6770c720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:43:28, skipping insertion in model container [2023-03-31 01:43:28,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:43:28" (3/3) ... [2023-03-31 01:43:28,568 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-03-31 01:43:28,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:43:28,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-03-31 01:43:28,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:43:28,642 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;@3e7b06f1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:43:28,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-03-31 01:43:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 625 states, 611 states have (on average 1.8036006546644845) internal successors, (1102), 620 states have internal predecessors, (1102), 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) [2023-03-31 01:43:28,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-03-31 01:43:28,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:28,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:28,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:28,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash 126349043, now seen corresponding path program 1 times [2023-03-31 01:43:28,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:28,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620849271] [2023-03-31 01:43:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:28,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:30,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:30,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620849271] [2023-03-31 01:43:30,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620849271] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:30,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:30,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:43:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426917512] [2023-03-31 01:43:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:30,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:43:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:43:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:30,589 INFO L87 Difference]: Start difference. First operand has 625 states, 611 states have (on average 1.8036006546644845) internal successors, (1102), 620 states have internal predecessors, (1102), 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 5 states, 5 states have (on average 46.4) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-03-31 01:43:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:34,905 INFO L93 Difference]: Finished difference Result 1831 states and 3249 transitions. [2023-03-31 01:43:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:43:34,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 4 states have internal predecessors, (232), 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 235 [2023-03-31 01:43:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:34,923 INFO L225 Difference]: With dead ends: 1831 [2023-03-31 01:43:34,923 INFO L226 Difference]: Without dead ends: 1197 [2023-03-31 01:43:34,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:43:34,931 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 2409 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:34,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 2824 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-03-31 01:43:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2023-03-31 01:43:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1164. [2023-03-31 01:43:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1159 states have (on average 1.548748921484038) internal successors, (1795), 1160 states have internal predecessors, (1795), 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) [2023-03-31 01:43:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1798 transitions. [2023-03-31 01:43:35,069 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1798 transitions. Word has length 235 [2023-03-31 01:43:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:35,070 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1798 transitions. [2023-03-31 01:43:35,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-03-31 01:43:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1798 transitions. [2023-03-31 01:43:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-03-31 01:43:35,076 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:35,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:35,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:43:35,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:35,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2073509791, now seen corresponding path program 1 times [2023-03-31 01:43:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082170801] [2023-03-31 01:43:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082170801] [2023-03-31 01:43:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082170801] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:35,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:35,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963104814] [2023-03-31 01:43:35,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:35,747 INFO L87 Difference]: Start difference. First operand 1164 states and 1798 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-03-31 01:43:39,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:39,818 INFO L93 Difference]: Finished difference Result 3318 states and 5096 transitions. [2023-03-31 01:43:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:43:39,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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 237 [2023-03-31 01:43:39,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:39,828 INFO L225 Difference]: With dead ends: 3318 [2023-03-31 01:43:39,829 INFO L226 Difference]: Without dead ends: 2283 [2023-03-31 01:43:39,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:39,832 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 811 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:39,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2682 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-31 01:43:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2023-03-31 01:43:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2252. [2023-03-31 01:43:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2247 states have (on average 1.5402759234534935) internal successors, (3461), 2248 states have internal predecessors, (3461), 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) [2023-03-31 01:43:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3464 transitions. [2023-03-31 01:43:39,964 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3464 transitions. Word has length 237 [2023-03-31 01:43:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:39,966 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3464 transitions. [2023-03-31 01:43:39,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-03-31 01:43:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3464 transitions. [2023-03-31 01:43:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-03-31 01:43:39,973 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:39,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:39,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:43:39,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:39,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:39,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1864701636, now seen corresponding path program 1 times [2023-03-31 01:43:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090267887] [2023-03-31 01:43:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:40,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:40,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090267887] [2023-03-31 01:43:40,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090267887] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:40,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:40,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:40,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398643650] [2023-03-31 01:43:40,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:40,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:40,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:40,468 INFO L87 Difference]: Start difference. First operand 2252 states and 3464 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-03-31 01:43:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:44,493 INFO L93 Difference]: Finished difference Result 6681 states and 10268 transitions. [2023-03-31 01:43:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:43:44,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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 237 [2023-03-31 01:43:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:44,510 INFO L225 Difference]: With dead ends: 6681 [2023-03-31 01:43:44,511 INFO L226 Difference]: Without dead ends: 4471 [2023-03-31 01:43:44,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:44,516 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 932 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:44,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 2810 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-31 01:43:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2023-03-31 01:43:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 2271. [2023-03-31 01:43:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2266 states have (on average 1.5397175639894087) internal successors, (3489), 2267 states have internal predecessors, (3489), 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) [2023-03-31 01:43:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3492 transitions. [2023-03-31 01:43:44,715 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3492 transitions. Word has length 237 [2023-03-31 01:43:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:44,716 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 3492 transitions. [2023-03-31 01:43:44,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-03-31 01:43:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3492 transitions. [2023-03-31 01:43:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-03-31 01:43:44,722 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:44,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:44,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:43:44,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:44,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash -243827333, now seen corresponding path program 1 times [2023-03-31 01:43:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:44,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823460779] [2023-03-31 01:43:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:44,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:45,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:45,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:45,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823460779] [2023-03-31 01:43:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823460779] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:45,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:45,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171877262] [2023-03-31 01:43:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:45,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:45,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:45,212 INFO L87 Difference]: Start difference. First operand 2271 states and 3492 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-03-31 01:43:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:48,790 INFO L93 Difference]: Finished difference Result 6700 states and 10289 transitions. [2023-03-31 01:43:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:43:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 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 238 [2023-03-31 01:43:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:48,807 INFO L225 Difference]: With dead ends: 6700 [2023-03-31 01:43:48,807 INFO L226 Difference]: Without dead ends: 4489 [2023-03-31 01:43:48,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:48,813 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 927 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:48,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 2810 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-03-31 01:43:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2023-03-31 01:43:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2289. [2023-03-31 01:43:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2284 states have (on average 1.5367775831873904) internal successors, (3510), 2285 states have internal predecessors, (3510), 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) [2023-03-31 01:43:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3513 transitions. [2023-03-31 01:43:49,020 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3513 transitions. Word has length 238 [2023-03-31 01:43:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:49,021 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3513 transitions. [2023-03-31 01:43:49,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-03-31 01:43:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3513 transitions. [2023-03-31 01:43:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-03-31 01:43:49,026 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:49,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:43:49,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:49,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1045507046, now seen corresponding path program 1 times [2023-03-31 01:43:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:49,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832677294] [2023-03-31 01:43:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:49,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:49,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832677294] [2023-03-31 01:43:49,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832677294] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:49,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:49,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:49,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401700097] [2023-03-31 01:43:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:49,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:49,560 INFO L87 Difference]: Start difference. First operand 2289 states and 3513 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-03-31 01:43:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:53,279 INFO L93 Difference]: Finished difference Result 6443 states and 9826 transitions. [2023-03-31 01:43:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:43:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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 239 [2023-03-31 01:43:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:53,292 INFO L225 Difference]: With dead ends: 6443 [2023-03-31 01:43:53,292 INFO L226 Difference]: Without dead ends: 4399 [2023-03-31 01:43:53,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:53,297 INFO L413 NwaCegarLoop]: 1840 mSDtfsCounter, 804 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:53,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2744 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-03-31 01:43:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2023-03-31 01:43:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4370. [2023-03-31 01:43:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4365 states have (on average 1.5243986254295532) internal successors, (6654), 4366 states have internal predecessors, (6654), 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) [2023-03-31 01:43:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6657 transitions. [2023-03-31 01:43:53,638 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6657 transitions. Word has length 239 [2023-03-31 01:43:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:53,639 INFO L495 AbstractCegarLoop]: Abstraction has 4370 states and 6657 transitions. [2023-03-31 01:43:53,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-03-31 01:43:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6657 transitions. [2023-03-31 01:43:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-03-31 01:43:53,648 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:53,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:53,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:43:53,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:53,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1409801833, now seen corresponding path program 1 times [2023-03-31 01:43:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533923022] [2023-03-31 01:43:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:53,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:54,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533923022] [2023-03-31 01:43:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533923022] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:54,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:54,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:43:54,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190747881] [2023-03-31 01:43:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:54,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:43:54,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:43:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:43:54,510 INFO L87 Difference]: Start difference. First operand 4370 states and 6657 transitions. Second operand has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 5 states have internal predecessors, (236), 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) [2023-03-31 01:43:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:57,510 INFO L93 Difference]: Finished difference Result 12659 states and 19234 transitions. [2023-03-31 01:43:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:57,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 5 states have internal predecessors, (236), 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 239 [2023-03-31 01:43:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:57,534 INFO L225 Difference]: With dead ends: 12659 [2023-03-31 01:43:57,534 INFO L226 Difference]: Without dead ends: 8348 [2023-03-31 01:43:57,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:43:57,543 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 3014 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:57,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 2360 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-31 01:43:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8348 states. [2023-03-31 01:43:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8348 to 8323. [2023-03-31 01:43:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 8318 states have (on average 1.5081750420774225) internal successors, (12545), 8319 states have internal predecessors, (12545), 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) [2023-03-31 01:43:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 12548 transitions. [2023-03-31 01:43:58,181 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 12548 transitions. Word has length 239 [2023-03-31 01:43:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:58,182 INFO L495 AbstractCegarLoop]: Abstraction has 8323 states and 12548 transitions. [2023-03-31 01:43:58,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 5 states have internal predecessors, (236), 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) [2023-03-31 01:43:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 12548 transitions. [2023-03-31 01:43:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-03-31 01:43:58,199 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:58,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:58,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:43:58,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:58,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash 23657170, now seen corresponding path program 1 times [2023-03-31 01:43:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:58,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150790000] [2023-03-31 01:43:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:59,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:59,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150790000] [2023-03-31 01:43:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150790000] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:59,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:59,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:43:59,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184080841] [2023-03-31 01:43:59,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:59,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:43:59,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:59,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:43:59,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:43:59,064 INFO L87 Difference]: Start difference. First operand 8323 states and 12548 transitions. Second operand has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 5 states have internal predecessors, (238), 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) [2023-03-31 01:44:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:44:02,806 INFO L93 Difference]: Finished difference Result 24345 states and 36639 transitions. [2023-03-31 01:44:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:44:02,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 5 states have internal predecessors, (238), 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 241 [2023-03-31 01:44:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:44:02,839 INFO L225 Difference]: With dead ends: 24345 [2023-03-31 01:44:02,839 INFO L226 Difference]: Without dead ends: 16143 [2023-03-31 01:44:02,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:44:02,855 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 1803 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:44:02,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 3300 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 01:44:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16143 states. [2023-03-31 01:44:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16143 to 16126. [2023-03-31 01:44:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16126 states, 16121 states have (on average 1.4950685441349791) internal successors, (24102), 16122 states have internal predecessors, (24102), 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) [2023-03-31 01:44:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16126 states to 16126 states and 24105 transitions. [2023-03-31 01:44:04,126 INFO L78 Accepts]: Start accepts. Automaton has 16126 states and 24105 transitions. Word has length 241 [2023-03-31 01:44:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:44:04,127 INFO L495 AbstractCegarLoop]: Abstraction has 16126 states and 24105 transitions. [2023-03-31 01:44:04,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 5 states have internal predecessors, (238), 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) [2023-03-31 01:44:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 16126 states and 24105 transitions. [2023-03-31 01:44:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-03-31 01:44:04,160 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:44:04,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:44:04,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:44:04,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:44:04,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:44:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash 480103031, now seen corresponding path program 1 times [2023-03-31 01:44:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:44:04,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726764849] [2023-03-31 01:44:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:44:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:44:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:44:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:44:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:44:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:44:04,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:44:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726764849] [2023-03-31 01:44:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726764849] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:44:04,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:44:04,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:44:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578676005] [2023-03-31 01:44:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:44:04,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:44:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:44:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:44:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:44:04,964 INFO L87 Difference]: Start difference. First operand 16126 states and 24105 transitions. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 4 states have internal predecessors, (238), 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) [2023-03-31 01:44:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:44:10,387 INFO L93 Difference]: Finished difference Result 47392 states and 70728 transitions. [2023-03-31 01:44:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:44:10,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 4 states have internal predecessors, (238), 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 241 [2023-03-31 01:44:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:44:10,453 INFO L225 Difference]: With dead ends: 47392 [2023-03-31 01:44:10,454 INFO L226 Difference]: Without dead ends: 31500 [2023-03-31 01:44:10,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:44:10,487 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 2004 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:44:10,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 2407 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-03-31 01:44:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31500 states. [2023-03-31 01:44:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31500 to 31338. [2023-03-31 01:44:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31338 states, 31333 states have (on average 1.48195193565889) internal successors, (46434), 31334 states have internal predecessors, (46434), 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) [2023-03-31 01:44:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31338 states to 31338 states and 46437 transitions. [2023-03-31 01:44:13,304 INFO L78 Accepts]: Start accepts. Automaton has 31338 states and 46437 transitions. Word has length 241 [2023-03-31 01:44:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:44:13,305 INFO L495 AbstractCegarLoop]: Abstraction has 31338 states and 46437 transitions. [2023-03-31 01:44:13,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 4 states have internal predecessors, (238), 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) [2023-03-31 01:44:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 31338 states and 46437 transitions. [2023-03-31 01:44:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-03-31 01:44:13,351 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:44:13,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:44:13,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:44:13,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:44:13,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:44:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash 499814862, now seen corresponding path program 1 times [2023-03-31 01:44:13,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:44:13,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871142979] [2023-03-31 01:44:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:44:13,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:44:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:44:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:44:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:44:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:44:13,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:44:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871142979] [2023-03-31 01:44:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871142979] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:44:13,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:44:13,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:44:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361128462] [2023-03-31 01:44:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:44:13,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:44:13,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:44:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:44:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:44:13,843 INFO L87 Difference]: Start difference. First operand 31338 states and 46437 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 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)