/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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:00:27,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:00:27,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:00:27,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:00:27,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:00:27,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:00:27,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:00:27,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:00:27,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:00:27,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:00:27,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:00:27,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:00:27,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:00:27,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:00:27,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:00:27,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:00:27,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:00:27,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:00:27,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:00:27,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:00:27,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:00:27,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:00:27,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:00:27,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:00:27,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:00:27,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:00:27,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:00:27,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:00:27,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:00:27,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:00:27,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:00:27,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:00:27,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:00:27,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:00:27,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:00:27,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:00:27,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:00:27,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:00:27,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:00:27,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:00:27,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:00:27,512 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 06:00:27,535 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:00:27,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:00:27,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:00:27,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:00:27,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:00:27,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:00:27,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:00:27,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:00:27,538 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:00:27,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:00:27,539 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:00:27,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:00:27,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:00:27,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:00:27,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:00:27,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:00:27,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:00:27,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:00:27,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:00:27,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:00:27,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:00:27,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:00:27,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:00:27,541 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:00:27,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:00:27,542 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:00:27,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:00:27,542 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:00:27,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:00:27,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:00:27,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:00:27,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:00:27,750 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:00:27,751 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:00:27,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-04-02 06:00:28,749 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:00:29,101 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:00:29,101 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-04-02 06:00:29,128 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59940ccd4/855d8ab88e6c4d619bca2144c1b72fb5/FLAGc7980f197 [2023-04-02 06:00:29,144 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59940ccd4/855d8ab88e6c4d619bca2144c1b72fb5 [2023-04-02 06:00:29,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:00:29,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:00:29,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:00:29,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:00:29,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:00:29,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:00:29" (1/1) ... [2023-04-02 06:00:29,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b98c502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:29, skipping insertion in model container [2023-04-02 06:00:29,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:00:29" (1/1) ... [2023-04-02 06:00:29,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:00:29,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:00:29,481 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2023-04-02 06:00:29,498 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2023-04-02 06:00:29,525 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2023-04-02 06:00:29,546 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2023-04-02 06:00:29,599 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2023-04-02 06:00:29,670 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2023-04-02 06:00:29,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:00:29,838 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:00:29,871 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2023-04-02 06:00:29,884 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2023-04-02 06:00:29,907 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2023-04-02 06:00:29,924 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2023-04-02 06:00:29,985 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2023-04-02 06:00:30,023 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2023-04-02 06:00:30,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:00:30,106 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:00:30,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30 WrapperNode [2023-04-02 06:00:30,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:00:30,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:00:30,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:00:30,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:00:30,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:00:30,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:00:30,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:00:30,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:00:30,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (1/1) ... [2023-04-02 06:00:30,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:00:30,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:00:30,329 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 06:00:30,347 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 06:00:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:00:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:00:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:00:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:00:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:00:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:00:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:00:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:00:30,633 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:00:30,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:00:32,817 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:00:32,840 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:00:32,841 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:00:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:00:32 BoogieIcfgContainer [2023-04-02 06:00:32,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:00:32,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:00:32,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:00:32,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:00:32,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:00:29" (1/3) ... [2023-04-02 06:00:32,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68183743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:00:32, skipping insertion in model container [2023-04-02 06:00:32,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:00:30" (2/3) ... [2023-04-02 06:00:32,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68183743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:00:32, skipping insertion in model container [2023-04-02 06:00:32,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:00:32" (3/3) ... [2023-04-02 06:00:32,855 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-04-02 06:00:32,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:00:32,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-02 06:00:32,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:00:32,955 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;@ad6116e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:00:32,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-02 06:00:32,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 1295 states, 1284 states have (on average 1.7710280373831775) internal successors, (2274), 1290 states have internal predecessors, (2274), 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 06:00:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:00:32,988 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:32,988 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] [2023-04-02 06:00:32,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:00:33,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2109617246, now seen corresponding path program 1 times [2023-04-02 06:00:33,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201625179] [2023-04-02 06:00:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:33,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:34,897 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 06:00:34,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:34,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201625179] [2023-04-02 06:00:34,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201625179] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:34,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:34,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:00:34,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096173833] [2023-04-02 06:00:34,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:34,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:00:34,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:00:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:00:34,964 INFO L87 Difference]: Start difference. First operand has 1295 states, 1284 states have (on average 1.7710280373831775) internal successors, (2274), 1290 states have internal predecessors, (2274), 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 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:42,353 INFO L93 Difference]: Finished difference Result 2530 states and 4342 transitions. [2023-04-02 06:00:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:00:42,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 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 56 [2023-04-02 06:00:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:42,378 INFO L225 Difference]: With dead ends: 2530 [2023-04-02 06:00:42,378 INFO L226 Difference]: Without dead ends: 1602 [2023-04-02 06:00:42,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:00:42,387 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 7097 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 3082 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7097 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:42,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7097 Valid, 1574 Invalid, 3157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3082 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-02 06:00:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2023-04-02 06:00:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1596. [2023-04-02 06:00:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1587 states have (on average 1.307498424700693) internal successors, (2075), 1592 states have internal predecessors, (2075), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2078 transitions. [2023-04-02 06:00:42,560 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2078 transitions. Word has length 56 [2023-04-02 06:00:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:42,561 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2078 transitions. [2023-04-02 06:00:42,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2078 transitions. [2023-04-02 06:00:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:00:42,568 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:42,568 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] [2023-04-02 06:00:42,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:00:42,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:00:42,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1481076219, now seen corresponding path program 1 times [2023-04-02 06:00:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986043007] [2023-04-02 06:00:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:42,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:43,737 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 06:00:43,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:43,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986043007] [2023-04-02 06:00:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986043007] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:43,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:43,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:00:43,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17160907] [2023-04-02 06:00:43,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:43,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:00:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:43,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:00:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:00:43,746 INFO L87 Difference]: Start difference. First operand 1596 states and 2078 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:48,739 INFO L93 Difference]: Finished difference Result 3123 states and 4128 transitions. [2023-04-02 06:00:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:00:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 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 57 [2023-04-02 06:00:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:48,746 INFO L225 Difference]: With dead ends: 3123 [2023-04-02 06:00:48,746 INFO L226 Difference]: Without dead ends: 2038 [2023-04-02 06:00:48,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:00:48,750 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 4604 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:48,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4604 Valid, 958 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-02 06:00:48,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2023-04-02 06:00:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 2028. [2023-04-02 06:00:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2019 states have (on average 1.3194650817236255) internal successors, (2664), 2024 states have internal predecessors, (2664), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2667 transitions. [2023-04-02 06:00:48,830 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2667 transitions. Word has length 57 [2023-04-02 06:00:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 2028 states and 2667 transitions. [2023-04-02 06:00:48,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2667 transitions. [2023-04-02 06:00:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:00:48,833 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:48,833 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] [2023-04-02 06:00:48,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:00:48,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:00:48,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash 9471875, now seen corresponding path program 1 times [2023-04-02 06:00:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329677825] [2023-04-02 06:00:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:00:49,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329677825] [2023-04-02 06:00:49,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329677825] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:49,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:49,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:00:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482663335] [2023-04-02 06:00:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:49,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:00:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:00:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:00:49,836 INFO L87 Difference]: Start difference. First operand 2028 states and 2667 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:54,599 INFO L93 Difference]: Finished difference Result 4423 states and 5839 transitions. [2023-04-02 06:00:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:00:54,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 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 57 [2023-04-02 06:00:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:54,611 INFO L225 Difference]: With dead ends: 4423 [2023-04-02 06:00:54,611 INFO L226 Difference]: Without dead ends: 3086 [2023-04-02 06:00:54,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:00:54,616 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 4478 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:54,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4478 Valid, 980 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-02 06:00:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2023-04-02 06:00:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3072. [2023-04-02 06:00:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3228860594188705) internal successors, (4052), 3068 states have internal predecessors, (4052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4055 transitions. [2023-04-02 06:00:54,757 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4055 transitions. Word has length 57 [2023-04-02 06:00:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:54,757 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4055 transitions. [2023-04-02 06:00:54,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4055 transitions. [2023-04-02 06:00:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:00:54,760 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:54,760 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] [2023-04-02 06:00:54,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:00:54,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:00:54,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1495817125, now seen corresponding path program 1 times [2023-04-02 06:00:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:54,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670170745] [2023-04-02 06:00:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:54,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:56,046 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 06:00:56,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:56,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670170745] [2023-04-02 06:00:56,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670170745] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:56,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:56,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:00:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636807325] [2023-04-02 06:00:56,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:00:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:00:56,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:00:56,048 INFO L87 Difference]: Start difference. First operand 3072 states and 4055 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:01,545 INFO L93 Difference]: Finished difference Result 5209 states and 7157 transitions. [2023-04-02 06:01:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:01:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 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 59 [2023-04-02 06:01:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:01,557 INFO L225 Difference]: With dead ends: 5209 [2023-04-02 06:01:01,557 INFO L226 Difference]: Without dead ends: 4505 [2023-04-02 06:01:01,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:01:01,564 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 3394 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:01,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 2229 Invalid, 3139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-02 06:01:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2023-04-02 06:01:01,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 3072. [2023-04-02 06:01:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3225595821090435) internal successors, (4051), 3068 states have internal predecessors, (4051), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4054 transitions. [2023-04-02 06:01:01,717 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4054 transitions. Word has length 59 [2023-04-02 06:01:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:01,717 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4054 transitions. [2023-04-02 06:01:01,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4054 transitions. [2023-04-02 06:01:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:01:01,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:01,719 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] [2023-04-02 06:01:01,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:01:01,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:01,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1191753371, now seen corresponding path program 1 times [2023-04-02 06:01:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:01,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748971148] [2023-04-02 06:01:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:02,988 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 06:01:02,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:02,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748971148] [2023-04-02 06:01:02,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748971148] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:02,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:02,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:01:02,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484970023] [2023-04-02 06:01:02,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:02,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:01:02,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:02,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:01:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:01:02,995 INFO L87 Difference]: Start difference. First operand 3072 states and 4054 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:08,552 INFO L93 Difference]: Finished difference Result 4621 states and 6244 transitions. [2023-04-02 06:01:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:01:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 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 59 [2023-04-02 06:01:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:08,564 INFO L225 Difference]: With dead ends: 4621 [2023-04-02 06:01:08,564 INFO L226 Difference]: Without dead ends: 4615 [2023-04-02 06:01:08,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:01:08,566 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 6651 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 3821 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:08,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 2864 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3821 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 06:01:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2023-04-02 06:01:08,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 3072. [2023-04-02 06:01:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3222331047992164) internal successors, (4050), 3068 states have internal predecessors, (4050), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4053 transitions. [2023-04-02 06:01:08,761 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4053 transitions. Word has length 59 [2023-04-02 06:01:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:08,761 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4053 transitions. [2023-04-02 06:01:08,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4053 transitions. [2023-04-02 06:01:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:01:08,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:08,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:01:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:01:08,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:08,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2106213882, now seen corresponding path program 1 times [2023-04-02 06:01:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:08,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997425948] [2023-04-02 06:01:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:09,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:09,964 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 06:01:09,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:09,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997425948] [2023-04-02 06:01:09,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997425948] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:09,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:09,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:01:09,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249566237] [2023-04-02 06:01:09,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:09,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:01:09,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:09,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:01:09,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:01:09,966 INFO L87 Difference]: Start difference. First operand 3072 states and 4053 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:16,236 INFO L93 Difference]: Finished difference Result 5855 states and 8055 transitions. [2023-04-02 06:01:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:01:16,236 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 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 59 [2023-04-02 06:01:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:16,251 INFO L225 Difference]: With dead ends: 5855 [2023-04-02 06:01:16,251 INFO L226 Difference]: Without dead ends: 5285 [2023-04-02 06:01:16,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:01:16,254 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 5290 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 4320 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 4320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:16,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5290 Valid, 2872 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 4320 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-02 06:01:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2023-04-02 06:01:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 3072. [2023-04-02 06:01:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3219066274893896) internal successors, (4049), 3068 states have internal predecessors, (4049), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4052 transitions. [2023-04-02 06:01:16,531 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4052 transitions. Word has length 59 [2023-04-02 06:01:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:16,531 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4052 transitions. [2023-04-02 06:01:16,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4052 transitions. [2023-04-02 06:01:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:01:16,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:16,534 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] [2023-04-02 06:01:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:01:16,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:16,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1735868852, now seen corresponding path program 1 times [2023-04-02 06:01:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568743508] [2023-04-02 06:01:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:17,516 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 06:01:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568743508] [2023-04-02 06:01:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568743508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:17,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:17,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:01:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009585921] [2023-04-02 06:01:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:01:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:01:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:17,518 INFO L87 Difference]: Start difference. First operand 3072 states and 4052 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:01:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:21,508 INFO L93 Difference]: Finished difference Result 4002 states and 5475 transitions. [2023-04-02 06:01:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:01:21,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 60 [2023-04-02 06:01:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:21,517 INFO L225 Difference]: With dead ends: 4002 [2023-04-02 06:01:21,517 INFO L226 Difference]: Without dead ends: 3102 [2023-04-02 06:01:21,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:21,519 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 598 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:21,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1799 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-02 06:01:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2023-04-02 06:01:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2023-04-02 06:01:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3091 states have (on average 1.346489809123261) internal successors, (4162), 3096 states have internal predecessors, (4162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4165 transitions. [2023-04-02 06:01:21,782 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4165 transitions. Word has length 60 [2023-04-02 06:01:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:21,782 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4165 transitions. [2023-04-02 06:01:21,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:01:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4165 transitions. [2023-04-02 06:01:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:01:21,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:21,785 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] [2023-04-02 06:01:21,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:01:21,786 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:21,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:21,786 INFO L85 PathProgramCache]: Analyzing trace with hash 528167772, now seen corresponding path program 1 times [2023-04-02 06:01:21,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:21,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389982998] [2023-04-02 06:01:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:21,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:22,780 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 06:01:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389982998] [2023-04-02 06:01:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389982998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:22,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:22,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:01:22,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027974771] [2023-04-02 06:01:22,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:22,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:01:22,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:01:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:22,785 INFO L87 Difference]: Start difference. First operand 3100 states and 4165 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:01:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:27,034 INFO L93 Difference]: Finished difference Result 4796 states and 6722 transitions. [2023-04-02 06:01:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:01:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 60 [2023-04-02 06:01:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:27,044 INFO L225 Difference]: With dead ends: 4796 [2023-04-02 06:01:27,044 INFO L226 Difference]: Without dead ends: 3519 [2023-04-02 06:01:27,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:27,047 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 576 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:27,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1778 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-02 06:01:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2023-04-02 06:01:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3517. [2023-04-02 06:01:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 3508 states have (on average 1.3694412770809579) internal successors, (4804), 3513 states have internal predecessors, (4804), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4807 transitions. [2023-04-02 06:01:27,364 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4807 transitions. Word has length 60 [2023-04-02 06:01:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:27,364 INFO L495 AbstractCegarLoop]: Abstraction has 3517 states and 4807 transitions. [2023-04-02 06:01:27,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:01:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4807 transitions. [2023-04-02 06:01:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:01:27,367 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:27,367 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] [2023-04-02 06:01:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:01:27,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:27,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1938351468, now seen corresponding path program 1 times [2023-04-02 06:01:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403374010] [2023-04-02 06:01:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:28,309 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 06:01:28,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:28,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403374010] [2023-04-02 06:01:28,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403374010] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:28,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:28,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:01:28,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328977366] [2023-04-02 06:01:28,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:28,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:01:28,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:01:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:28,317 INFO L87 Difference]: Start difference. First operand 3517 states and 4807 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:01:32,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:32,655 INFO L93 Difference]: Finished difference Result 7727 states and 10792 transitions. [2023-04-02 06:01:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:01:32,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 60 [2023-04-02 06:01:32,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:32,674 INFO L225 Difference]: With dead ends: 7727 [2023-04-02 06:01:32,674 INFO L226 Difference]: Without dead ends: 5318 [2023-04-02 06:01:32,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:32,692 INFO L413 NwaCegarLoop]: 1217 mSDtfsCounter, 657 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:32,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1971 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-02 06:01:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2023-04-02 06:01:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 5312. [2023-04-02 06:01:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5303 states have (on average 1.3582877616443523) internal successors, (7203), 5308 states have internal predecessors, (7203), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 7206 transitions. [2023-04-02 06:01:33,308 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 7206 transitions. Word has length 60 [2023-04-02 06:01:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:33,308 INFO L495 AbstractCegarLoop]: Abstraction has 5312 states and 7206 transitions. [2023-04-02 06:01:33,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:01:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 7206 transitions. [2023-04-02 06:01:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:01:33,311 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:33,311 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] [2023-04-02 06:01:33,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:01:33,312 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:33,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1975277373, now seen corresponding path program 1 times [2023-04-02 06:01:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:33,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211890611] [2023-04-02 06:01:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:34,436 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 06:01:34,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:34,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211890611] [2023-04-02 06:01:34,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211890611] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:34,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:34,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:01:34,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092023859] [2023-04-02 06:01:34,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:34,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:01:34,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:01:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:34,438 INFO L87 Difference]: Start difference. First operand 5312 states and 7206 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:01:38,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:38,996 INFO L93 Difference]: Finished difference Result 10262 states and 14126 transitions. [2023-04-02 06:01:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:01:38,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2023-04-02 06:01:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:39,009 INFO L225 Difference]: With dead ends: 10262 [2023-04-02 06:01:39,009 INFO L226 Difference]: Without dead ends: 5480 [2023-04-02 06:01:39,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:01:39,016 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 788 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:39,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1492 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 06:01:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2023-04-02 06:01:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 4490. [2023-04-02 06:01:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4481 states have (on average 1.3740236554340548) internal successors, (6157), 4486 states have internal predecessors, (6157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6160 transitions. [2023-04-02 06:01:39,541 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6160 transitions. Word has length 61 [2023-04-02 06:01:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:39,542 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 6160 transitions. [2023-04-02 06:01:39,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:01:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6160 transitions. [2023-04-02 06:01:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:01:39,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:39,544 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] [2023-04-02 06:01:39,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:01:39,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:39,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1967324081, now seen corresponding path program 1 times [2023-04-02 06:01:39,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:39,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873216685] [2023-04-02 06:01:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:40,603 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 06:01:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873216685] [2023-04-02 06:01:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873216685] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:40,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:40,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:01:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854614716] [2023-04-02 06:01:40,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:01:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:01:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:40,604 INFO L87 Difference]: Start difference. First operand 4490 states and 6160 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:01:44,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:44,491 INFO L93 Difference]: Finished difference Result 8541 states and 11975 transitions. [2023-04-02 06:01:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:01:44,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2023-04-02 06:01:44,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:44,509 INFO L225 Difference]: With dead ends: 8541 [2023-04-02 06:01:44,509 INFO L226 Difference]: Without dead ends: 4887 [2023-04-02 06:01:44,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:01:44,515 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 750 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:44,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1116 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:01:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4887 states. [2023-04-02 06:01:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4887 to 3925. [2023-04-02 06:01:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 3917 states have (on average 1.3893285677814655) internal successors, (5442), 3921 states have internal predecessors, (5442), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5445 transitions. [2023-04-02 06:01:44,971 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5445 transitions. Word has length 61 [2023-04-02 06:01:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:44,971 INFO L495 AbstractCegarLoop]: Abstraction has 3925 states and 5445 transitions. [2023-04-02 06:01:44,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:01:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5445 transitions. [2023-04-02 06:01:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:01:44,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:44,972 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] [2023-04-02 06:01:44,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:01:44,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:44,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash 191410407, now seen corresponding path program 1 times [2023-04-02 06:01:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:44,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887386102] [2023-04-02 06:01:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:46,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:46,504 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 06:01:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887386102] [2023-04-02 06:01:46,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887386102] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:46,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:46,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:01:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638328239] [2023-04-02 06:01:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:01:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:01:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:01:46,506 INFO L87 Difference]: Start difference. First operand 3925 states and 5445 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 06:01:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:52,531 INFO L93 Difference]: Finished difference Result 6701 states and 9407 transitions. [2023-04-02 06:01:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:01:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 61 [2023-04-02 06:01:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:52,546 INFO L225 Difference]: With dead ends: 6701 [2023-04-02 06:01:52,547 INFO L226 Difference]: Without dead ends: 6551 [2023-04-02 06:01:52,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:01:52,550 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 4289 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4289 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:52,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4289 Valid, 2807 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 06:01:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2023-04-02 06:01:53,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 3873. [2023-04-02 06:01:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3873 states, 3867 states have (on average 1.39100077579519) internal successors, (5379), 3869 states have internal predecessors, (5379), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 5382 transitions. [2023-04-02 06:01:53,116 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 5382 transitions. Word has length 61 [2023-04-02 06:01:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:53,116 INFO L495 AbstractCegarLoop]: Abstraction has 3873 states and 5382 transitions. [2023-04-02 06:01:53,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 06:01:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 5382 transitions. [2023-04-02 06:01:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:01:53,117 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:53,117 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] [2023-04-02 06:01:53,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:01:53,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:53,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2091462536, now seen corresponding path program 1 times [2023-04-02 06:01:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795666787] [2023-04-02 06:01:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:53,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:54,046 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 06:01:54,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795666787] [2023-04-02 06:01:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795666787] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:54,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:01:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528959317] [2023-04-02 06:01:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:54,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:01:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:01:54,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:01:54,047 INFO L87 Difference]: Start difference. First operand 3873 states and 5382 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:01:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:57,111 INFO L93 Difference]: Finished difference Result 7655 states and 10845 transitions. [2023-04-02 06:01:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:01:57,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2023-04-02 06:01:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:57,121 INFO L225 Difference]: With dead ends: 7655 [2023-04-02 06:01:57,121 INFO L226 Difference]: Without dead ends: 4283 [2023-04-02 06:01:57,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:01:57,127 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 517 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:57,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 753 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:01:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2023-04-02 06:01:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3445. [2023-04-02 06:01:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 3440 states have (on average 1.4090116279069766) internal successors, (4847), 3441 states have internal predecessors, (4847), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4850 transitions. [2023-04-02 06:01:57,665 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4850 transitions. Word has length 61 [2023-04-02 06:01:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:57,665 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 4850 transitions. [2023-04-02 06:01:57,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:01:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4850 transitions. [2023-04-02 06:01:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:01:57,667 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:57,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:01:57,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:01:57,667 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:01:57,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1118005105, now seen corresponding path program 1 times [2023-04-02 06:01:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173431901] [2023-04-02 06:01:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:57,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:59,116 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 06:01:59,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:59,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173431901] [2023-04-02 06:01:59,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173431901] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:59,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:59,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:01:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543072588] [2023-04-02 06:01:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:59,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:01:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:01:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:01:59,117 INFO L87 Difference]: Start difference. First operand 3445 states and 4850 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 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 06:02:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:05,246 INFO L93 Difference]: Finished difference Result 7376 states and 10427 transitions. [2023-04-02 06:02:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:02:05,246 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 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 62 [2023-04-02 06:02:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:05,255 INFO L225 Difference]: With dead ends: 7376 [2023-04-02 06:02:05,256 INFO L226 Difference]: Without dead ends: 7224 [2023-04-02 06:02:05,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:02:05,258 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 3616 mSDsluCounter, 3226 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3616 SdHoareTripleChecker+Valid, 3957 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:05,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3616 Valid, 3957 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 06:02:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2023-04-02 06:02:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 3391. [2023-04-02 06:02:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3391 states, 3387 states have (on average 1.4098021848243283) internal successors, (4775), 3387 states have internal predecessors, (4775), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 4778 transitions. [2023-04-02 06:02:05,877 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 4778 transitions. Word has length 62 [2023-04-02 06:02:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:05,877 INFO L495 AbstractCegarLoop]: Abstraction has 3391 states and 4778 transitions. [2023-04-02 06:02:05,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 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 06:02:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 4778 transitions. [2023-04-02 06:02:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:02:05,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:05,879 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 06:02:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:02:05,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:02:05,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash -901183530, now seen corresponding path program 1 times [2023-04-02 06:02:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:05,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88904179] [2023-04-02 06:02:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:06,909 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 06:02:06,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:06,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88904179] [2023-04-02 06:02:06,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88904179] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:06,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:06,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:02:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546190908] [2023-04-02 06:02:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:02:06,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:02:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:02:06,910 INFO L87 Difference]: Start difference. First operand 3391 states and 4778 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:02:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:11,177 INFO L93 Difference]: Finished difference Result 10511 states and 15174 transitions. [2023-04-02 06:02:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:02:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 70 [2023-04-02 06:02:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:11,188 INFO L225 Difference]: With dead ends: 10511 [2023-04-02 06:02:11,188 INFO L226 Difference]: Without dead ends: 7725 [2023-04-02 06:02:11,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:02:11,192 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1594 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:11,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 976 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:02:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7725 states. [2023-04-02 06:02:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7725 to 5867. [2023-04-02 06:02:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 5863 states have (on average 1.4107112399795327) internal successors, (8271), 5863 states have internal predecessors, (8271), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 8274 transitions. [2023-04-02 06:02:12,344 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 8274 transitions. Word has length 70 [2023-04-02 06:02:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:12,344 INFO L495 AbstractCegarLoop]: Abstraction has 5867 states and 8274 transitions. [2023-04-02 06:02:12,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:02:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 8274 transitions. [2023-04-02 06:02:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:02:12,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:12,346 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 06:02:12,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:02:12,346 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:02:12,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1807200049, now seen corresponding path program 1 times [2023-04-02 06:02:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:12,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491257014] [2023-04-02 06:02:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:13,326 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 06:02:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:13,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491257014] [2023-04-02 06:02:13,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491257014] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:13,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:13,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:02:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981036084] [2023-04-02 06:02:13,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:13,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:02:13,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:02:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:02:13,327 INFO L87 Difference]: Start difference. First operand 5867 states and 8274 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 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 06:02:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:15,735 INFO L93 Difference]: Finished difference Result 9965 states and 14151 transitions. [2023-04-02 06:02:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:02:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 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 06:02:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:15,741 INFO L225 Difference]: With dead ends: 9965 [2023-04-02 06:02:15,741 INFO L226 Difference]: Without dead ends: 4681 [2023-04-02 06:02:15,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:02:15,746 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1413 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:15,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 763 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:02:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2023-04-02 06:02:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4677. [2023-04-02 06:02:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4677 states, 4673 states have (on average 1.3973892574363365) internal successors, (6530), 4673 states have internal predecessors, (6530), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 6533 transitions. [2023-04-02 06:02:16,767 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 6533 transitions. Word has length 71 [2023-04-02 06:02:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:16,773 INFO L495 AbstractCegarLoop]: Abstraction has 4677 states and 6533 transitions. [2023-04-02 06:02:16,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 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 06:02:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 6533 transitions. [2023-04-02 06:02:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:02:16,775 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:16,775 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 06:02:16,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:02:16,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:02:16,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash 929815676, now seen corresponding path program 1 times [2023-04-02 06:02:16,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:16,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005507969] [2023-04-02 06:02:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:17,737 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 06:02:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005507969] [2023-04-02 06:02:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005507969] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:17,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:17,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:02:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503654342] [2023-04-02 06:02:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:17,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:02:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:02:17,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:02:17,739 INFO L87 Difference]: Start difference. First operand 4677 states and 6533 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 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 06:02:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:22,136 INFO L93 Difference]: Finished difference Result 12485 states and 17667 transitions. [2023-04-02 06:02:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:02:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 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 06:02:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:22,147 INFO L225 Difference]: With dead ends: 12485 [2023-04-02 06:02:22,147 INFO L226 Difference]: Without dead ends: 8391 [2023-04-02 06:02:22,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:02:22,152 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 259 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:22,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 815 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:02:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8391 states. [2023-04-02 06:02:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8391 to 7877. [2023-04-02 06:02:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7877 states, 7873 states have (on average 1.3987044328718405) internal successors, (11012), 7873 states have internal predecessors, (11012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7877 states to 7877 states and 11015 transitions. [2023-04-02 06:02:23,990 INFO L78 Accepts]: Start accepts. Automaton has 7877 states and 11015 transitions. Word has length 73 [2023-04-02 06:02:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:23,990 INFO L495 AbstractCegarLoop]: Abstraction has 7877 states and 11015 transitions. [2023-04-02 06:02:23,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 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 06:02:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 11015 transitions. [2023-04-02 06:02:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:02:23,994 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:23,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:02:23,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:02:23,994 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:02:23,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1762516015, now seen corresponding path program 1 times [2023-04-02 06:02:23,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:23,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049632906] [2023-04-02 06:02:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:23,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:25,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:25,033 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 06:02:25,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:25,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049632906] [2023-04-02 06:02:25,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049632906] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:25,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:25,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:02:25,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580369925] [2023-04-02 06:02:25,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:25,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:02:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:02:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:02:25,035 INFO L87 Difference]: Start difference. First operand 7877 states and 11015 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 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 06:02:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:30,904 INFO L93 Difference]: Finished difference Result 16649 states and 23073 transitions. [2023-04-02 06:02:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:02:30,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 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 06:02:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:30,923 INFO L225 Difference]: With dead ends: 16649 [2023-04-02 06:02:30,923 INFO L226 Difference]: Without dead ends: 16647 [2023-04-02 06:02:30,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:02:30,926 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 598 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:30,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 2224 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:02:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16647 states. [2023-04-02 06:02:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16647 to 8429. [2023-04-02 06:02:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8429 states, 8425 states have (on average 1.3725816023738873) internal successors, (11564), 8425 states have internal predecessors, (11564), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8429 states to 8429 states and 11567 transitions. [2023-04-02 06:02:33,119 INFO L78 Accepts]: Start accepts. Automaton has 8429 states and 11567 transitions. Word has length 76 [2023-04-02 06:02:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:33,119 INFO L495 AbstractCegarLoop]: Abstraction has 8429 states and 11567 transitions. [2023-04-02 06:02:33,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 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 06:02:33,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8429 states and 11567 transitions. [2023-04-02 06:02:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:02:33,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:33,121 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 06:02:33,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:02:33,121 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:02:33,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:33,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1081558064, now seen corresponding path program 1 times [2023-04-02 06:02:33,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:33,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746499913] [2023-04-02 06:02:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:33,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:02:33,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:33,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746499913] [2023-04-02 06:02:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746499913] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:33,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:33,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:02:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482614918] [2023-04-02 06:02:33,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:02:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:02:33,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:02:33,975 INFO L87 Difference]: Start difference. First operand 8429 states and 11567 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) [2023-04-02 06:02:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:40,209 INFO L93 Difference]: Finished difference Result 22579 states and 31163 transitions. [2023-04-02 06:02:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:02:40,210 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 77 [2023-04-02 06:02:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:40,231 INFO L225 Difference]: With dead ends: 22579 [2023-04-02 06:02:40,231 INFO L226 Difference]: Without dead ends: 14733 [2023-04-02 06:02:40,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:02:40,241 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 295 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:40,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 745 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:02:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14733 states. [2023-04-02 06:02:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14733 to 14731. [2023-04-02 06:02:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14731 states, 14727 states have (on average 1.3625314049025599) internal successors, (20066), 14727 states have internal predecessors, (20066), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14731 states to 14731 states and 20069 transitions. [2023-04-02 06:02:44,235 INFO L78 Accepts]: Start accepts. Automaton has 14731 states and 20069 transitions. Word has length 77 [2023-04-02 06:02:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:44,235 INFO L495 AbstractCegarLoop]: Abstraction has 14731 states and 20069 transitions. [2023-04-02 06:02:44,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-04-02 06:02:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 14731 states and 20069 transitions. [2023-04-02 06:02:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:02:44,238 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:44,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:02:44,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:02:44,238 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:02:44,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash 488987274, now seen corresponding path program 1 times [2023-04-02 06:02:44,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:44,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355643204] [2023-04-02 06:02:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:44,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:45,143 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 06:02:45,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:45,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355643204] [2023-04-02 06:02:45,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355643204] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:45,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:45,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:02:45,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130347087] [2023-04-02 06:02:45,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:45,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:02:45,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:02:45,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:02:45,144 INFO L87 Difference]: Start difference. First operand 14731 states and 20069 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 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 06:02:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:53,468 INFO L93 Difference]: Finished difference Result 25051 states and 34253 transitions. [2023-04-02 06:02:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:02:53,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 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 78 [2023-04-02 06:02:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:53,503 INFO L225 Difference]: With dead ends: 25051 [2023-04-02 06:02:53,504 INFO L226 Difference]: Without dead ends: 20853 [2023-04-02 06:02:53,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:02:53,515 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1057 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:53,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1222 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:02:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20853 states. [2023-04-02 06:02:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20853 to 18175. [2023-04-02 06:02:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18175 states, 18171 states have (on average 1.35941885421826) internal successors, (24702), 18171 states have internal predecessors, (24702), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18175 states to 18175 states and 24705 transitions. [2023-04-02 06:02:58,884 INFO L78 Accepts]: Start accepts. Automaton has 18175 states and 24705 transitions. Word has length 78 [2023-04-02 06:02:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:58,884 INFO L495 AbstractCegarLoop]: Abstraction has 18175 states and 24705 transitions. [2023-04-02 06:02:58,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 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 06:02:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 18175 states and 24705 transitions. [2023-04-02 06:02:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:02:58,887 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:58,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:02:58,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:02:58,887 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:02:58,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash -361198502, now seen corresponding path program 1 times [2023-04-02 06:02:58,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:58,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870635109] [2023-04-02 06:02:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:58,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:59,761 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 06:02:59,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870635109] [2023-04-02 06:02:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870635109] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:59,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:59,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:02:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372940223] [2023-04-02 06:02:59,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:02:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:59,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:02:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:02:59,763 INFO L87 Difference]: Start difference. First operand 18175 states and 24705 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 06:03:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:03:06,240 INFO L93 Difference]: Finished difference Result 22347 states and 30299 transitions. [2023-04-02 06:03:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:03:06,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 78 [2023-04-02 06:03:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:03:06,268 INFO L225 Difference]: With dead ends: 22347 [2023-04-02 06:03:06,268 INFO L226 Difference]: Without dead ends: 14009 [2023-04-02 06:03:06,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:03:06,281 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 187 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:03:06,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 896 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:03:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2023-04-02 06:03:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 13911. [2023-04-02 06:03:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13911 states, 13907 states have (on average 1.3321348960954915) internal successors, (18526), 13907 states have internal predecessors, (18526), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:03:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13911 states to 13911 states and 18529 transitions. [2023-04-02 06:03:10,272 INFO L78 Accepts]: Start accepts. Automaton has 13911 states and 18529 transitions. Word has length 78 [2023-04-02 06:03:10,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:03:10,273 INFO L495 AbstractCegarLoop]: Abstraction has 13911 states and 18529 transitions. [2023-04-02 06:03:10,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 06:03:10,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13911 states and 18529 transitions. [2023-04-02 06:03:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:03:10,275 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:03:10,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:03:10,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:03:10,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:03:10,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:03:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1771129649, now seen corresponding path program 1 times [2023-04-02 06:03:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:03:10,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216111237] [2023-04-02 06:03:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:03:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:03:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:03:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:03:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:03:11,393 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 06:03:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:03:11,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216111237] [2023-04-02 06:03:11,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216111237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:03:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:03:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:03:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539506577] [2023-04-02 06:03:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:03:11,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:03:11,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:03:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:03:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:03:11,395 INFO L87 Difference]: Start difference. First operand 13911 states and 18529 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:03:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:03:18,677 INFO L93 Difference]: Finished difference Result 19095 states and 25589 transitions. [2023-04-02 06:03:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:03:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-02 06:03:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:03:18,702 INFO L225 Difference]: With dead ends: 19095 [2023-04-02 06:03:18,702 INFO L226 Difference]: Without dead ends: 16485 [2023-04-02 06:03:18,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:03:18,709 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 979 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:03:18,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1330 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:03:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16485 states. [2023-04-02 06:03:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16485 to 15799. [2023-04-02 06:03:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15799 states, 15795 states have (on average 1.331687242798354) internal successors, (21034), 15795 states have internal predecessors, (21034), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:03:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15799 states to 15799 states and 21037 transitions. [2023-04-02 06:03:23,246 INFO L78 Accepts]: Start accepts. Automaton has 15799 states and 21037 transitions. Word has length 79 [2023-04-02 06:03:23,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:03:23,246 INFO L495 AbstractCegarLoop]: Abstraction has 15799 states and 21037 transitions. [2023-04-02 06:03:23,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:03:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15799 states and 21037 transitions. [2023-04-02 06:03:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:03:23,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:03:23,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:03:23,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:03:23,249 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:03:23,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:03:23,249 INFO L85 PathProgramCache]: Analyzing trace with hash 759833242, now seen corresponding path program 1 times [2023-04-02 06:03:23,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:03:23,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452457407] [2023-04-02 06:03:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:03:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:03:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:03:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:03:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:03:24,195 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 06:03:24,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:03:24,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452457407] [2023-04-02 06:03:24,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452457407] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:03:24,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:03:24,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:03:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691236578] [2023-04-02 06:03:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:03:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:03:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:03:24,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:03:24,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:03:24,197 INFO L87 Difference]: Start difference. First operand 15799 states and 21037 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:03:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:03:44,283 INFO L93 Difference]: Finished difference Result 59610 states and 79254 transitions. [2023-04-02 06:03:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:03:44,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:03:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:03:44,386 INFO L225 Difference]: With dead ends: 59610 [2023-04-02 06:03:44,387 INFO L226 Difference]: Without dead ends: 51416 [2023-04-02 06:03:44,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:03:44,410 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2850 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:03:44,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 772 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:03:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51416 states. [2023-04-02 06:03:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51416 to 22263. [2023-04-02 06:03:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22263 states, 22259 states have (on average 1.3327642751246687) internal successors, (29666), 22259 states have internal predecessors, (29666), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:03:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22263 states to 22263 states and 29669 transitions. [2023-04-02 06:03:52,040 INFO L78 Accepts]: Start accepts. Automaton has 22263 states and 29669 transitions. Word has length 81 [2023-04-02 06:03:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:03:52,041 INFO L495 AbstractCegarLoop]: Abstraction has 22263 states and 29669 transitions. [2023-04-02 06:03:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:03:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 22263 states and 29669 transitions. [2023-04-02 06:03:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:03:52,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:03:52,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:03:52,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:03:52,044 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:03:52,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:03:52,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1909292305, now seen corresponding path program 1 times [2023-04-02 06:03:52,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:03:52,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160270146] [2023-04-02 06:03:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:03:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:03:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:03:53,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:03:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:03:53,090 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 06:03:53,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:03:53,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160270146] [2023-04-02 06:03:53,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160270146] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:03:53,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:03:53,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:03:53,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278373282] [2023-04-02 06:03:53,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:03:53,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:03:53,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:03:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:03:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:03:53,092 INFO L87 Difference]: Start difference. First operand 22263 states and 29669 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:04:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:04,524 INFO L93 Difference]: Finished difference Result 32251 states and 43087 transitions. [2023-04-02 06:04:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:04:04,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:04:04,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:04,561 INFO L225 Difference]: With dead ends: 32251 [2023-04-02 06:04:04,561 INFO L226 Difference]: Without dead ends: 27237 [2023-04-02 06:04:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:04:04,571 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 983 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:04,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1312 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 06:04:04,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27237 states. [2023-04-02 06:04:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27237 to 25931. [2023-04-02 06:04:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25931 states, 25927 states have (on average 1.3299649014540826) internal successors, (34482), 25927 states have internal predecessors, (34482), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:04:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25931 states to 25931 states and 34485 transitions. [2023-04-02 06:04:12,489 INFO L78 Accepts]: Start accepts. Automaton has 25931 states and 34485 transitions. Word has length 81 [2023-04-02 06:04:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:12,489 INFO L495 AbstractCegarLoop]: Abstraction has 25931 states and 34485 transitions. [2023-04-02 06:04:12,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:04:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 25931 states and 34485 transitions. [2023-04-02 06:04:12,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 06:04:12,493 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:12,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:04:12,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:04:12,494 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:04:12,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:12,494 INFO L85 PathProgramCache]: Analyzing trace with hash 813244048, now seen corresponding path program 1 times [2023-04-02 06:04:12,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586829581] [2023-04-02 06:04:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:13,402 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 06:04:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586829581] [2023-04-02 06:04:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586829581] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:13,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:04:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472076444] [2023-04-02 06:04:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:13,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:04:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:13,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:04:13,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:04:13,405 INFO L87 Difference]: Start difference. First operand 25931 states and 34485 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 06:04:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:24,450 INFO L93 Difference]: Finished difference Result 34693 states and 46208 transitions. [2023-04-02 06:04:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:04:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 86 [2023-04-02 06:04:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:24,491 INFO L225 Difference]: With dead ends: 34693 [2023-04-02 06:04:24,491 INFO L226 Difference]: Without dead ends: 27079 [2023-04-02 06:04:24,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:04:24,505 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 1018 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:24,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1264 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:04:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27079 states. [2023-04-02 06:04:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27079 to 25775. [2023-04-02 06:04:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25775 states, 25771 states have (on average 1.3279267393581933) internal successors, (34222), 25771 states have internal predecessors, (34222), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:04:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25775 states to 25775 states and 34225 transitions. [2023-04-02 06:04:32,959 INFO L78 Accepts]: Start accepts. Automaton has 25775 states and 34225 transitions. Word has length 86 [2023-04-02 06:04:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:32,959 INFO L495 AbstractCegarLoop]: Abstraction has 25775 states and 34225 transitions. [2023-04-02 06:04:32,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 06:04:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 25775 states and 34225 transitions. [2023-04-02 06:04:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:04:32,963 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:32,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:04:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:04:32,964 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:04:32,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1523521973, now seen corresponding path program 1 times [2023-04-02 06:04:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597763905] [2023-04-02 06:04:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat