/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:10:00,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:10:00,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:10:00,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:10:00,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:10:00,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:10:00,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:10:00,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:10:00,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:10:00,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:10:00,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:10:00,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:10:00,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:10:00,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:10:00,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:10:00,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:10:00,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:10:00,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:10:00,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:10:00,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:10:00,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:10:00,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:10:00,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:10:00,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:10:00,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:10:00,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:10:00,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:10:00,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:10:00,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:10:00,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:10:00,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:10:00,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:10:00,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:10:00,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:10:00,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:10:00,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:10:00,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:10:00,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:10:00,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:10:00,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:10:00,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:10:00,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:10:00,504 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:10:00,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:10:00,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:10:00,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:10:00,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:10:00,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:10:00,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:10:00,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:10:00,507 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:10:00,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:10:00,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:10:00,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:10:00,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:10:00,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:10:00,510 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:10:00,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:10:00,510 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:10:00,510 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:10:00,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:10:00,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:10:00,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:10:00,743 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:10:00,745 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:10:00,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-02 06:10:01,860 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:10:02,208 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:10:02,208 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-02 06:10:02,235 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92fd47187/6f39b2401d244798ac24bfa6c85e9689/FLAG932391e1d [2023-04-02 06:10:02,251 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92fd47187/6f39b2401d244798ac24bfa6c85e9689 [2023-04-02 06:10:02,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:10:02,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:10:02,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:10:02,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:10:02,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:10:02,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:10:02" (1/1) ... [2023-04-02 06:10:02,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae5babd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:02, skipping insertion in model container [2023-04-02 06:10:02,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:10:02" (1/1) ... [2023-04-02 06:10:02,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:10:02,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:10:02,841 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[28933,28946] [2023-04-02 06:10:02,935 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[50969,50982] [2023-04-02 06:10:02,963 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58695,58708] [2023-04-02 06:10:03,023 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[83802,83815] [2023-04-02 06:10:03,052 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98975,98988] [2023-04-02 06:10:03,090 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[115686,115699] [2023-04-02 06:10:03,112 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132053,132066] [2023-04-02 06:10:03,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:10:03,261 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:10:03,356 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[28933,28946] [2023-04-02 06:10:03,379 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[50969,50982] [2023-04-02 06:10:03,388 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58695,58708] [2023-04-02 06:10:03,415 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[83802,83815] [2023-04-02 06:10:03,432 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98975,98988] [2023-04-02 06:10:03,452 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[115686,115699] [2023-04-02 06:10:03,470 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132053,132066] [2023-04-02 06:10:03,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:10:03,618 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:10:03,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03 WrapperNode [2023-04-02 06:10:03,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:10:03,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:10:03,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:10:03,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:10:03,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:10:03,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:10:03,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:10:03,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:10:03,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (1/1) ... [2023-04-02 06:10:03,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:10:03,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:10:03,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:10:03,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:10:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:10:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:10:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:10:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:10:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:10:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:10:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:10:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:10:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:10:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:10:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:10:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:10:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:10:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:10:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:10:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:10:03,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:10:04,222 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:10:04,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:10:07,264 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:10:07,283 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:10:07,283 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:10:07,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:10:07 BoogieIcfgContainer [2023-04-02 06:10:07,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:10:07,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:10:07,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:10:07,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:10:07,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:10:02" (1/3) ... [2023-04-02 06:10:07,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f855c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:10:07, skipping insertion in model container [2023-04-02 06:10:07,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:10:03" (2/3) ... [2023-04-02 06:10:07,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f855c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:10:07, skipping insertion in model container [2023-04-02 06:10:07,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:10:07" (3/3) ... [2023-04-02 06:10:07,296 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-02 06:10:07,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:10:07,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-02 06:10:07,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:10:07,394 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;@3a16a2ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:10:07,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-02 06:10:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 2034 states, 2022 states have (on average 1.7982195845697329) internal successors, (3636), 2029 states have internal predecessors, (3636), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:10:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:10:07,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:07,429 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] [2023-04-02 06:10:07,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:07,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash -575476504, now seen corresponding path program 1 times [2023-04-02 06:10:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541465033] [2023-04-02 06:10:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:07,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:08,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:08,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541465033] [2023-04-02 06:10:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541465033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:08,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:08,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939894103] [2023-04-02 06:10:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:08,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:08,890 INFO L87 Difference]: Start difference. First operand has 2034 states, 2022 states have (on average 1.7982195845697329) internal successors, (3636), 2029 states have internal predecessors, (3636), 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 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:18,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:18,004 INFO L93 Difference]: Finished difference Result 3336 states and 5861 transitions. [2023-04-02 06:10:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:18,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:10:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:18,025 INFO L225 Difference]: With dead ends: 3336 [2023-04-02 06:10:18,025 INFO L226 Difference]: Without dead ends: 2135 [2023-04-02 06:10:18,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:18,035 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 10327 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 4610 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10327 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 4646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:18,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10327 Valid, 2213 Invalid, 4646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 4610 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-02 06:10:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2023-04-02 06:10:18,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 2122. [2023-04-02 06:10:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2112 states have (on average 1.3480113636363635) internal successors, (2847), 2118 states have internal predecessors, (2847), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2850 transitions. [2023-04-02 06:10:18,158 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2850 transitions. Word has length 68 [2023-04-02 06:10:18,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:18,159 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 2850 transitions. [2023-04-02 06:10:18,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:18,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2850 transitions. [2023-04-02 06:10:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:10:18,166 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:18,166 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] [2023-04-02 06:10:18,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:10:18,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:18,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2046685550, now seen corresponding path program 1 times [2023-04-02 06:10:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:18,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624159734] [2023-04-02 06:10:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:19,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624159734] [2023-04-02 06:10:19,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624159734] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:19,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:19,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:19,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221033034] [2023-04-02 06:10:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:19,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:19,034 INFO L87 Difference]: Start difference. First operand 2122 states and 2850 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:25,461 INFO L93 Difference]: Finished difference Result 4158 states and 5655 transitions. [2023-04-02 06:10:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:25,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:10:25,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:25,469 INFO L225 Difference]: With dead ends: 4158 [2023-04-02 06:10:25,469 INFO L226 Difference]: Without dead ends: 2844 [2023-04-02 06:10:25,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:25,473 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 7662 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 3631 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7662 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 3699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:25,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7662 Valid, 1440 Invalid, 3699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3631 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-02 06:10:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2023-04-02 06:10:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2830. [2023-04-02 06:10:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2820 states have (on average 1.3432624113475178) internal successors, (3788), 2826 states have internal predecessors, (3788), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3791 transitions. [2023-04-02 06:10:25,577 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3791 transitions. Word has length 69 [2023-04-02 06:10:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:25,578 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 3791 transitions. [2023-04-02 06:10:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3791 transitions. [2023-04-02 06:10:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:10:25,582 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:25,582 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] [2023-04-02 06:10:25,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:10:25,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:25,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 333342285, now seen corresponding path program 1 times [2023-04-02 06:10:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100697572] [2023-04-02 06:10:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:26,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:26,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100697572] [2023-04-02 06:10:26,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100697572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:26,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:26,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:26,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295219422] [2023-04-02 06:10:26,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:26,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:26,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:26,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:26,354 INFO L87 Difference]: Start difference. First operand 2830 states and 3791 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:32,828 INFO L93 Difference]: Finished difference Result 5968 states and 8144 transitions. [2023-04-02 06:10:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:32,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:10:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:32,840 INFO L225 Difference]: With dead ends: 5968 [2023-04-02 06:10:32,840 INFO L226 Difference]: Without dead ends: 4029 [2023-04-02 06:10:32,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:32,845 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 7952 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 3702 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7952 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:32,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7952 Valid, 1461 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3702 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-02 06:10:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2023-04-02 06:10:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 4023. [2023-04-02 06:10:32,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4023 states, 4013 states have (on average 1.3503613256915026) internal successors, (5419), 4019 states have internal predecessors, (5419), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 5422 transitions. [2023-04-02 06:10:32,995 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 5422 transitions. Word has length 69 [2023-04-02 06:10:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:32,995 INFO L495 AbstractCegarLoop]: Abstraction has 4023 states and 5422 transitions. [2023-04-02 06:10:32,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 5422 transitions. [2023-04-02 06:10:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:10:33,001 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:33,001 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] [2023-04-02 06:10:33,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:10:33,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:33,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1876991270, now seen corresponding path program 1 times [2023-04-02 06:10:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:33,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192125057] [2023-04-02 06:10:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192125057] [2023-04-02 06:10:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192125057] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:34,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:34,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:10:34,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485045017] [2023-04-02 06:10:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:34,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:10:34,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:34,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:10:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:10:34,155 INFO L87 Difference]: Start difference. First operand 4023 states and 5422 transitions. Second operand has 11 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:44,015 INFO L93 Difference]: Finished difference Result 8099 states and 11485 transitions. [2023-04-02 06:10:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:10:44,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:10:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:44,039 INFO L225 Difference]: With dead ends: 8099 [2023-04-02 06:10:44,039 INFO L226 Difference]: Without dead ends: 7282 [2023-04-02 06:10:44,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:10:44,044 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 11804 mSDsluCounter, 5106 mSDsCounter, 0 mSdLazyCounter, 9042 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11804 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 9064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 9042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:44,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11804 Valid, 6307 Invalid, 9064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 9042 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-02 06:10:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2023-04-02 06:10:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 4030. [2023-04-02 06:10:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 4020 states have (on average 1.3497512437810946) internal successors, (5426), 4026 states have internal predecessors, (5426), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5429 transitions. [2023-04-02 06:10:44,286 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5429 transitions. Word has length 70 [2023-04-02 06:10:44,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:44,286 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 5429 transitions. [2023-04-02 06:10:44,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5429 transitions. [2023-04-02 06:10:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:10:44,291 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:44,291 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] [2023-04-02 06:10:44,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:10:44,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:44,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash -445543123, now seen corresponding path program 1 times [2023-04-02 06:10:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:44,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762209573] [2023-04-02 06:10:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762209573] [2023-04-02 06:10:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762209573] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:10:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264359523] [2023-04-02 06:10:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:45,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:10:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:10:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:10:45,353 INFO L87 Difference]: Start difference. First operand 4030 states and 5429 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:52,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:52,801 INFO L93 Difference]: Finished difference Result 4778 states and 6484 transitions. [2023-04-02 06:10:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:10:52,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:10:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:52,817 INFO L225 Difference]: With dead ends: 4778 [2023-04-02 06:10:52,817 INFO L226 Difference]: Without dead ends: 4773 [2023-04-02 06:10:52,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:10:52,820 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 10921 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 6679 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10921 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 6718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 6679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:52,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10921 Valid, 4534 Invalid, 6718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 6679 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-02 06:10:52,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2023-04-02 06:10:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4030. [2023-04-02 06:10:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 4020 states have (on average 1.349502487562189) internal successors, (5425), 4026 states have internal predecessors, (5425), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5428 transitions. [2023-04-02 06:10:53,073 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5428 transitions. Word has length 70 [2023-04-02 06:10:53,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:53,073 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 5428 transitions. [2023-04-02 06:10:53,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5428 transitions. [2023-04-02 06:10:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:53,078 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:53,078 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] [2023-04-02 06:10:53,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:10:53,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:53,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 101424919, now seen corresponding path program 1 times [2023-04-02 06:10:53,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:53,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028192704] [2023-04-02 06:10:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:53,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:53,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028192704] [2023-04-02 06:10:53,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028192704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:53,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:53,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:10:53,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570848088] [2023-04-02 06:10:53,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:53,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:10:53,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:10:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:10:53,804 INFO L87 Difference]: Start difference. First operand 4030 states and 5428 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:59,601 INFO L93 Difference]: Finished difference Result 7704 states and 10523 transitions. [2023-04-02 06:10:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:10:59,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 71 [2023-04-02 06:10:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:59,615 INFO L225 Difference]: With dead ends: 7704 [2023-04-02 06:10:59,615 INFO L226 Difference]: Without dead ends: 4713 [2023-04-02 06:10:59,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:10:59,622 INFO L413 NwaCegarLoop]: 1984 mSDtfsCounter, 2003 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:59,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2003 Valid, 2610 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 06:10:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2023-04-02 06:10:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4703. [2023-04-02 06:10:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4703 states, 4693 states have (on average 1.351587470701044) internal successors, (6343), 4699 states have internal predecessors, (6343), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 6346 transitions. [2023-04-02 06:10:59,903 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 6346 transitions. Word has length 71 [2023-04-02 06:10:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:59,904 INFO L495 AbstractCegarLoop]: Abstraction has 4703 states and 6346 transitions. [2023-04-02 06:10:59,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 6346 transitions. [2023-04-02 06:10:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:59,909 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:59,909 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] [2023-04-02 06:10:59,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:10:59,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:59,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1607209169, now seen corresponding path program 1 times [2023-04-02 06:10:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:59,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619822198] [2023-04-02 06:10:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:01,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619822198] [2023-04-02 06:11:01,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619822198] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:01,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:11:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475678407] [2023-04-02 06:11:01,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:01,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:11:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:11:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:11:01,111 INFO L87 Difference]: Start difference. First operand 4703 states and 6346 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:11,496 INFO L93 Difference]: Finished difference Result 15649 states and 22927 transitions. [2023-04-02 06:11:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:11:11,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 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 71 [2023-04-02 06:11:11,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:11,530 INFO L225 Difference]: With dead ends: 15649 [2023-04-02 06:11:11,531 INFO L226 Difference]: Without dead ends: 14671 [2023-04-02 06:11:11,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:11:11,538 INFO L413 NwaCegarLoop]: 2309 mSDtfsCounter, 10746 mSDsluCounter, 12441 mSDsCounter, 0 mSdLazyCounter, 5299 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10746 SdHoareTripleChecker+Valid, 14750 SdHoareTripleChecker+Invalid, 5333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:11,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10746 Valid, 14750 Invalid, 5333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 5299 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-02 06:11:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14671 states. [2023-04-02 06:11:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14671 to 4635. [2023-04-02 06:11:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 4626 states have (on average 1.3497622135754432) internal successors, (6244), 4631 states have internal predecessors, (6244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 6247 transitions. [2023-04-02 06:11:12,035 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 6247 transitions. Word has length 71 [2023-04-02 06:11:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:12,035 INFO L495 AbstractCegarLoop]: Abstraction has 4635 states and 6247 transitions. [2023-04-02 06:11:12,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 6247 transitions. [2023-04-02 06:11:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:11:12,041 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:12,041 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] [2023-04-02 06:11:12,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:11:12,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:12,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1523650526, now seen corresponding path program 1 times [2023-04-02 06:11:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:12,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228610891] [2023-04-02 06:11:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:12,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:13,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228610891] [2023-04-02 06:11:13,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228610891] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:13,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:13,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:11:13,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995691754] [2023-04-02 06:11:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:13,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:11:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:11:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:11:13,313 INFO L87 Difference]: Start difference. First operand 4635 states and 6247 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:24,415 INFO L93 Difference]: Finished difference Result 14559 states and 21239 transitions. [2023-04-02 06:11:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:11:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 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 71 [2023-04-02 06:11:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:24,438 INFO L225 Difference]: With dead ends: 14559 [2023-04-02 06:11:24,439 INFO L226 Difference]: Without dead ends: 14551 [2023-04-02 06:11:24,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:11:24,442 INFO L413 NwaCegarLoop]: 2246 mSDtfsCounter, 12597 mSDsluCounter, 9809 mSDsCounter, 0 mSdLazyCounter, 4759 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12597 SdHoareTripleChecker+Valid, 12055 SdHoareTripleChecker+Invalid, 4793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:24,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12597 Valid, 12055 Invalid, 4793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4759 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-02 06:11:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14551 states. [2023-04-02 06:11:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14551 to 4627. [2023-04-02 06:11:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4619 states have (on average 1.3500757739770513) internal successors, (6236), 4623 states have internal predecessors, (6236), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 6239 transitions. [2023-04-02 06:11:25,002 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 6239 transitions. Word has length 71 [2023-04-02 06:11:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:25,002 INFO L495 AbstractCegarLoop]: Abstraction has 4627 states and 6239 transitions. [2023-04-02 06:11:25,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 6239 transitions. [2023-04-02 06:11:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:11:25,007 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:25,007 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] [2023-04-02 06:11:25,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:11:25,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:25,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2027293536, now seen corresponding path program 1 times [2023-04-02 06:11:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:25,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109174300] [2023-04-02 06:11:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:25,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109174300] [2023-04-02 06:11:25,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109174300] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:25,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:25,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:11:25,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736372827] [2023-04-02 06:11:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:25,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:11:25,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:11:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:11:25,758 INFO L87 Difference]: Start difference. First operand 4627 states and 6239 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:31,471 INFO L93 Difference]: Finished difference Result 9577 states and 13034 transitions. [2023-04-02 06:11:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:11:31,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:11:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:31,482 INFO L225 Difference]: With dead ends: 9577 [2023-04-02 06:11:31,482 INFO L226 Difference]: Without dead ends: 6363 [2023-04-02 06:11:31,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:11:31,488 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 6266 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6266 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:31,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6266 Valid, 1196 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 06:11:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6363 states. [2023-04-02 06:11:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6363 to 6353. [2023-04-02 06:11:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6353 states, 6345 states have (on average 1.3533490937746258) internal successors, (8587), 6349 states have internal predecessors, (8587), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6353 states to 6353 states and 8590 transitions. [2023-04-02 06:11:32,357 INFO L78 Accepts]: Start accepts. Automaton has 6353 states and 8590 transitions. Word has length 71 [2023-04-02 06:11:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:32,357 INFO L495 AbstractCegarLoop]: Abstraction has 6353 states and 8590 transitions. [2023-04-02 06:11:32,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 6353 states and 8590 transitions. [2023-04-02 06:11:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:11:32,362 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:32,362 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] [2023-04-02 06:11:32,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:11:32,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:32,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:32,363 INFO L85 PathProgramCache]: Analyzing trace with hash -572512372, now seen corresponding path program 1 times [2023-04-02 06:11:32,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:32,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604743879] [2023-04-02 06:11:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:32,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:33,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604743879] [2023-04-02 06:11:33,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604743879] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:33,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:33,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:11:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772982210] [2023-04-02 06:11:33,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:11:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:11:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:11:33,358 INFO L87 Difference]: Start difference. First operand 6353 states and 8590 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:43,190 INFO L93 Difference]: Finished difference Result 15831 states and 22779 transitions. [2023-04-02 06:11:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:11:43,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:11:43,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:43,212 INFO L225 Difference]: With dead ends: 15831 [2023-04-02 06:11:43,213 INFO L226 Difference]: Without dead ends: 13942 [2023-04-02 06:11:43,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:11:43,219 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 6082 mSDsluCounter, 3721 mSDsCounter, 0 mSdLazyCounter, 6477 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6082 SdHoareTripleChecker+Valid, 4763 SdHoareTripleChecker+Invalid, 6517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:43,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6082 Valid, 4763 Invalid, 6517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 6477 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-02 06:11:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13942 states. [2023-04-02 06:11:44,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13942 to 6286. [2023-04-02 06:11:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6286 states, 6278 states have (on average 1.3525007964319846) internal successors, (8491), 6282 states have internal predecessors, (8491), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6286 states to 6286 states and 8494 transitions. [2023-04-02 06:11:44,259 INFO L78 Accepts]: Start accepts. Automaton has 6286 states and 8494 transitions. Word has length 72 [2023-04-02 06:11:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:44,260 INFO L495 AbstractCegarLoop]: Abstraction has 6286 states and 8494 transitions. [2023-04-02 06:11:44,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6286 states and 8494 transitions. [2023-04-02 06:11:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:11:44,265 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:44,265 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] [2023-04-02 06:11:44,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:11:44,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:44,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -56599630, now seen corresponding path program 1 times [2023-04-02 06:11:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:44,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112299146] [2023-04-02 06:11:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:44,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:45,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:45,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112299146] [2023-04-02 06:11:45,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112299146] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:45,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:45,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:11:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270017583] [2023-04-02 06:11:45,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:45,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:11:45,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:45,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:11:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:11:45,477 INFO L87 Difference]: Start difference. First operand 6286 states and 8494 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:56,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:56,129 INFO L93 Difference]: Finished difference Result 13597 states and 19745 transitions. [2023-04-02 06:11:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:11:56,130 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 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 73 [2023-04-02 06:11:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:56,146 INFO L225 Difference]: With dead ends: 13597 [2023-04-02 06:11:56,146 INFO L226 Difference]: Without dead ends: 11705 [2023-04-02 06:11:56,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:11:56,152 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 9098 mSDsluCounter, 7535 mSDsCounter, 0 mSdLazyCounter, 3295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9098 SdHoareTripleChecker+Valid, 9295 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:56,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9098 Valid, 9295 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3295 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-02 06:11:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11705 states. [2023-04-02 06:11:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11705 to 6212. [2023-04-02 06:11:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6205 states have (on average 1.3519742143432716) internal successors, (8389), 6208 states have internal predecessors, (8389), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 8392 transitions. [2023-04-02 06:11:57,381 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 8392 transitions. Word has length 73 [2023-04-02 06:11:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:57,381 INFO L495 AbstractCegarLoop]: Abstraction has 6212 states and 8392 transitions. [2023-04-02 06:11:57,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:57,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 8392 transitions. [2023-04-02 06:11:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:11:57,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:57,386 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] [2023-04-02 06:11:57,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:11:57,386 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:57,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:57,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1954930386, now seen corresponding path program 1 times [2023-04-02 06:11:57,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:57,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895253578] [2023-04-02 06:11:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:57,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:58,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895253578] [2023-04-02 06:11:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895253578] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:58,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:58,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:11:58,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759094679] [2023-04-02 06:11:58,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:11:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:11:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:11:58,299 INFO L87 Difference]: Start difference. First operand 6212 states and 8392 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:07,015 INFO L93 Difference]: Finished difference Result 9723 states and 13363 transitions. [2023-04-02 06:12:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:12:07,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-02 06:12:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:07,025 INFO L225 Difference]: With dead ends: 9723 [2023-04-02 06:12:07,026 INFO L226 Difference]: Without dead ends: 9715 [2023-04-02 06:12:07,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:12:07,027 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 8835 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 5621 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8835 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8835 Valid, 3804 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 5621 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-02 06:12:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9715 states. [2023-04-02 06:12:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9715 to 6212. [2023-04-02 06:12:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6205 states have (on average 1.3518130539887188) internal successors, (8388), 6208 states have internal predecessors, (8388), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 8391 transitions. [2023-04-02 06:12:08,268 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 8391 transitions. Word has length 73 [2023-04-02 06:12:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:08,268 INFO L495 AbstractCegarLoop]: Abstraction has 6212 states and 8391 transitions. [2023-04-02 06:12:08,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 8391 transitions. [2023-04-02 06:12:08,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:12:08,291 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:08,291 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] [2023-04-02 06:12:08,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:12:08,292 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:08,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1217181065, now seen corresponding path program 1 times [2023-04-02 06:12:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:08,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290991676] [2023-04-02 06:12:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:08,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290991676] [2023-04-02 06:12:08,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290991676] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:08,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:08,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159133850] [2023-04-02 06:12:08,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:08,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:08,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:08,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:08,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:08,920 INFO L87 Difference]: Start difference. First operand 6212 states and 8391 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:13,904 INFO L93 Difference]: Finished difference Result 9994 states and 13938 transitions. [2023-04-02 06:12:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 74 [2023-04-02 06:12:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:13,912 INFO L225 Difference]: With dead ends: 9994 [2023-04-02 06:12:13,912 INFO L226 Difference]: Without dead ends: 5976 [2023-04-02 06:12:13,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:13,917 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 1207 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:13,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1754 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 06:12:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5976 states. [2023-04-02 06:12:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5976 to 5972. [2023-04-02 06:12:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5972 states, 5966 states have (on average 1.3845122360040227) internal successors, (8260), 5968 states have internal predecessors, (8260), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 8263 transitions. [2023-04-02 06:12:15,359 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 8263 transitions. Word has length 74 [2023-04-02 06:12:15,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:15,360 INFO L495 AbstractCegarLoop]: Abstraction has 5972 states and 8263 transitions. [2023-04-02 06:12:15,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:15,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 8263 transitions. [2023-04-02 06:12:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:12:15,364 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:15,364 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] [2023-04-02 06:12:15,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:12:15,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:15,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1305217242, now seen corresponding path program 1 times [2023-04-02 06:12:15,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:15,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807353284] [2023-04-02 06:12:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:15,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:16,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:16,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807353284] [2023-04-02 06:12:16,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807353284] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:16,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:16,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:12:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590532606] [2023-04-02 06:12:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:16,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:12:16,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:12:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:12:16,500 INFO L87 Difference]: Start difference. First operand 5972 states and 8263 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:31,690 INFO L93 Difference]: Finished difference Result 20153 states and 29874 transitions. [2023-04-02 06:12:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:12:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 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 74 [2023-04-02 06:12:31,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:31,721 INFO L225 Difference]: With dead ends: 20153 [2023-04-02 06:12:31,721 INFO L226 Difference]: Without dead ends: 20142 [2023-04-02 06:12:31,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:12:31,727 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 9000 mSDsluCounter, 8788 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9000 SdHoareTripleChecker+Valid, 10302 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:31,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9000 Valid, 10302 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 06:12:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20142 states. [2023-04-02 06:12:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20142 to 5961. [2023-04-02 06:12:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5956 states have (on average 1.3849899261249161) internal successors, (8249), 5957 states have internal predecessors, (8249), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8252 transitions. [2023-04-02 06:12:33,781 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8252 transitions. Word has length 74 [2023-04-02 06:12:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:33,781 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 8252 transitions. [2023-04-02 06:12:33,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8252 transitions. [2023-04-02 06:12:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:12:33,795 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:33,795 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] [2023-04-02 06:12:33,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:12:33,795 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:33,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1597543258, now seen corresponding path program 1 times [2023-04-02 06:12:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:33,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781118824] [2023-04-02 06:12:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:33,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:34,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:34,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781118824] [2023-04-02 06:12:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781118824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:34,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:34,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:12:34,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848314827] [2023-04-02 06:12:34,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:12:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:12:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:12:34,692 INFO L87 Difference]: Start difference. First operand 5961 states and 8252 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:42,900 INFO L93 Difference]: Finished difference Result 11504 states and 16708 transitions. [2023-04-02 06:12:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:12:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-02 06:12:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:42,910 INFO L225 Difference]: With dead ends: 11504 [2023-04-02 06:12:42,911 INFO L226 Difference]: Without dead ends: 8815 [2023-04-02 06:12:42,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:12:42,915 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 3513 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 4174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 4202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:42,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3513 Valid, 3123 Invalid, 4202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4174 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 06:12:42,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2023-04-02 06:12:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 5961. [2023-04-02 06:12:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5956 states have (on average 1.3844862323707186) internal successors, (8246), 5957 states have internal predecessors, (8246), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8249 transitions. [2023-04-02 06:12:44,815 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8249 transitions. Word has length 74 [2023-04-02 06:12:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:44,815 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 8249 transitions. [2023-04-02 06:12:44,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8249 transitions. [2023-04-02 06:12:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:12:44,821 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:44,821 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] [2023-04-02 06:12:44,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:12:44,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:44,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1020876785, now seen corresponding path program 1 times [2023-04-02 06:12:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:44,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114447368] [2023-04-02 06:12:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:44,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:45,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114447368] [2023-04-02 06:12:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114447368] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:12:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029217512] [2023-04-02 06:12:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:12:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:12:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:12:45,678 INFO L87 Difference]: Start difference. First operand 5961 states and 8249 transitions. Second operand has 11 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:54,415 INFO L93 Difference]: Finished difference Result 11901 states and 17200 transitions. [2023-04-02 06:12:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:12:54,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-02 06:12:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:54,427 INFO L225 Difference]: With dead ends: 11901 [2023-04-02 06:12:54,427 INFO L226 Difference]: Without dead ends: 8813 [2023-04-02 06:12:54,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:12:54,433 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 4167 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 4676 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4167 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 4693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:54,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4167 Valid, 3532 Invalid, 4693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4676 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 06:12:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8813 states. [2023-04-02 06:12:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8813 to 5961. [2023-04-02 06:12:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5956 states have (on average 1.3843183344526528) internal successors, (8245), 5957 states have internal predecessors, (8245), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8248 transitions. [2023-04-02 06:12:56,422 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8248 transitions. Word has length 75 [2023-04-02 06:12:56,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:56,422 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 8248 transitions. [2023-04-02 06:12:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8248 transitions. [2023-04-02 06:12:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:12:56,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:56,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:12:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:12:56,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:56,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1016534800, now seen corresponding path program 1 times [2023-04-02 06:12:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:56,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832424306] [2023-04-02 06:12:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:56,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:57,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832424306] [2023-04-02 06:12:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832424306] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:57,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:57,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:12:57,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010859934] [2023-04-02 06:12:57,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:57,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:12:57,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:12:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:12:57,349 INFO L87 Difference]: Start difference. First operand 5961 states and 8248 transitions. Second operand has 11 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:13:11,475 INFO L93 Difference]: Finished difference Result 19151 states and 28152 transitions. [2023-04-02 06:13:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:13:11,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-02 06:13:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:13:11,499 INFO L225 Difference]: With dead ends: 19151 [2023-04-02 06:13:11,500 INFO L226 Difference]: Without dead ends: 16389 [2023-04-02 06:13:11,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=213, Invalid=599, Unknown=0, NotChecked=0, Total=812 [2023-04-02 06:13:11,506 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 7773 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7773 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 5227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:13:11,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7773 Valid, 4083 Invalid, 5227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-02 06:13:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16389 states. [2023-04-02 06:13:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16389 to 5961. [2023-04-02 06:13:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5956 states have (on average 1.384150436534587) internal successors, (8244), 5957 states have internal predecessors, (8244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8247 transitions. [2023-04-02 06:13:13,708 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8247 transitions. Word has length 75 [2023-04-02 06:13:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:13:13,709 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 8247 transitions. [2023-04-02 06:13:13,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8247 transitions. [2023-04-02 06:13:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:13:13,714 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:13:13,714 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] [2023-04-02 06:13:13,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:13:13,715 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:13:13,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:13:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 847623343, now seen corresponding path program 1 times [2023-04-02 06:13:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:13:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197676461] [2023-04-02 06:13:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:13:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:13:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:14,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:13:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:13:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:13:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197676461] [2023-04-02 06:13:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197676461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:13:14,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:13:14,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:13:14,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982893197] [2023-04-02 06:13:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:13:14,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:13:14,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:13:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:13:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:13:14,362 INFO L87 Difference]: Start difference. First operand 5961 states and 8247 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:13:20,683 INFO L93 Difference]: Finished difference Result 10135 states and 14704 transitions. [2023-04-02 06:13:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:13:20,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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 75 [2023-04-02 06:13:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:13:20,692 INFO L225 Difference]: With dead ends: 10135 [2023-04-02 06:13:20,692 INFO L226 Difference]: Without dead ends: 7106 [2023-04-02 06:13:20,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:13:20,696 INFO L413 NwaCegarLoop]: 1348 mSDtfsCounter, 749 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:13:20,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1914 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 06:13:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2023-04-02 06:13:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 5862. [2023-04-02 06:13:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5862 states, 5857 states have (on average 1.4133515451596381) internal successors, (8278), 5858 states have internal predecessors, (8278), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5862 states to 5862 states and 8281 transitions. [2023-04-02 06:13:23,205 INFO L78 Accepts]: Start accepts. Automaton has 5862 states and 8281 transitions. Word has length 75 [2023-04-02 06:13:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:13:23,206 INFO L495 AbstractCegarLoop]: Abstraction has 5862 states and 8281 transitions. [2023-04-02 06:13:23,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5862 states and 8281 transitions. [2023-04-02 06:13:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:13:23,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:13:23,210 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] [2023-04-02 06:13:23,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:13:23,210 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:13:23,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:13:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1793340818, now seen corresponding path program 1 times [2023-04-02 06:13:23,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:13:23,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335853833] [2023-04-02 06:13:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:13:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:13:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:13:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:13:23,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:13:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335853833] [2023-04-02 06:13:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335853833] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:13:23,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:13:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:13:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706174412] [2023-04-02 06:13:23,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:13:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:13:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:13:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:13:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:13:23,830 INFO L87 Difference]: Start difference. First operand 5862 states and 8281 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:13:31,339 INFO L93 Difference]: Finished difference Result 12322 states and 18141 transitions. [2023-04-02 06:13:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:13:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 76 [2023-04-02 06:13:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:13:31,350 INFO L225 Difference]: With dead ends: 12322 [2023-04-02 06:13:31,351 INFO L226 Difference]: Without dead ends: 8410 [2023-04-02 06:13:31,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:13:31,356 INFO L413 NwaCegarLoop]: 1306 mSDtfsCounter, 767 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:13:31,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1838 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 06:13:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8410 states. [2023-04-02 06:13:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8410 to 8408. [2023-04-02 06:13:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8408 states, 8403 states have (on average 1.4425800309413306) internal successors, (12122), 8404 states have internal predecessors, (12122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8408 states to 8408 states and 12125 transitions. [2023-04-02 06:13:35,782 INFO L78 Accepts]: Start accepts. Automaton has 8408 states and 12125 transitions. Word has length 76 [2023-04-02 06:13:35,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:13:35,782 INFO L495 AbstractCegarLoop]: Abstraction has 8408 states and 12125 transitions. [2023-04-02 06:13:35,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8408 states and 12125 transitions. [2023-04-02 06:13:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:13:35,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:13:35,787 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] [2023-04-02 06:13:35,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:13:35,787 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:13:35,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:13:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash 643376950, now seen corresponding path program 1 times [2023-04-02 06:13:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:13:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756498308] [2023-04-02 06:13:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:13:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:13:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:13:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:13:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:13:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756498308] [2023-04-02 06:13:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756498308] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:13:36,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:13:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:13:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963972047] [2023-04-02 06:13:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:13:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:13:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:13:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:13:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:13:36,424 INFO L87 Difference]: Start difference. First operand 8408 states and 12125 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:13:47,640 INFO L93 Difference]: Finished difference Result 21169 states and 31111 transitions. [2023-04-02 06:13:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:13:47,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 76 [2023-04-02 06:13:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:13:47,662 INFO L225 Difference]: With dead ends: 21169 [2023-04-02 06:13:47,662 INFO L226 Difference]: Without dead ends: 14401 [2023-04-02 06:13:47,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:13:47,672 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 774 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:13:47,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 2291 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 06:13:47,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2023-04-02 06:13:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 14399. [2023-04-02 06:13:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14399 states, 14394 states have (on average 1.4414339308045019) internal successors, (20748), 14395 states have internal predecessors, (20748), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14399 states to 14399 states and 20751 transitions. [2023-04-02 06:13:55,854 INFO L78 Accepts]: Start accepts. Automaton has 14399 states and 20751 transitions. Word has length 76 [2023-04-02 06:13:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:13:55,855 INFO L495 AbstractCegarLoop]: Abstraction has 14399 states and 20751 transitions. [2023-04-02 06:13:55,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14399 states and 20751 transitions. [2023-04-02 06:13:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:13:55,860 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:13:55,860 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] [2023-04-02 06:13:55,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:13:55,861 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:13:55,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:13:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash -53049413, now seen corresponding path program 1 times [2023-04-02 06:13:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:13:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068423642] [2023-04-02 06:13:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:13:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:13:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:13:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:13:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:13:56,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068423642] [2023-04-02 06:13:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068423642] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:13:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:13:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:13:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548578594] [2023-04-02 06:13:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:13:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:13:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:13:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:13:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:13:56,478 INFO L87 Difference]: Start difference. First operand 14399 states and 20751 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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)