/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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:58:44,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:58:44,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:58:44,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:58:44,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:58:44,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:58:44,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:58:44,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:58:44,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:58:44,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:58:44,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:58:44,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:58:44,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:58:44,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:58:45,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:58:45,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:58:45,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:58:45,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:58:45,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:58:45,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:58:45,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:58:45,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:58:45,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:58:45,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:58:45,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:58:45,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:58:45,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:58:45,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:58:45,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:58:45,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:58:45,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:58:45,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:58:45,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:58:45,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:58:45,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:58:45,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:58:45,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:58:45,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:58:45,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:58:45,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:58:45,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:58:45,019 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 05:58:45,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:58:45,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:58:45,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:58:45,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:58:45,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:58:45,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:58:45,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:58:45,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:58:45,038 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:58:45,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:58:45,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:58:45,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:58:45,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:58:45,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:58:45,041 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:58:45,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:58:45,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:58:45,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:58:45,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:58:45,257 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:58:45,257 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:58:45,258 INFO L432 ainManager$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+lhb-reducer.c [2023-04-02 05:58:46,360 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:58:46,640 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:58:46,641 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+lhb-reducer.c [2023-04-02 05:58:46,663 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14dcaf634/7c45440ea5e04b52b659ed40df22b7f2/FLAG8ed1c4bf1 [2023-04-02 05:58:46,675 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14dcaf634/7c45440ea5e04b52b659ed40df22b7f2 [2023-04-02 05:58:46,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:58:46,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:58:46,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:58:46,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:58:46,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:58:46,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:58:46" (1/1) ... [2023-04-02 05:58:46,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d8256d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:46, skipping insertion in model container [2023-04-02 05:58:46,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:58:46" (1/1) ... [2023-04-02 05:58:46,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:58:46,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:58:46,940 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+lhb-reducer.c[8637,8650] [2023-04-02 05:58:46,977 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+lhb-reducer.c[15862,15875] [2023-04-02 05:58:46,984 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+lhb-reducer.c[18059,18072] [2023-04-02 05:58:46,988 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+lhb-reducer.c[19083,19096] [2023-04-02 05:58:47,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:58:47,213 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:58:47,249 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+lhb-reducer.c[8637,8650] [2023-04-02 05:58:47,264 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+lhb-reducer.c[15862,15875] [2023-04-02 05:58:47,269 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+lhb-reducer.c[18059,18072] [2023-04-02 05:58:47,272 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+lhb-reducer.c[19083,19096] [2023-04-02 05:58:47,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:58:47,452 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:58:47,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47 WrapperNode [2023-04-02 05:58:47,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:58:47,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:58:47,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:58:47,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:58:47,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:58:47,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:58:47,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:58:47,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:58:47,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (1/1) ... [2023-04-02 05:58:47,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:58:47,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:58:47,570 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 05:58:47,581 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 05:58:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:58:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:58:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:58:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:58:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:58:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:58:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:58:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:58:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:58:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:58:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:58:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:58:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:58:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:58:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:58:47,869 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:58:47,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:58:48,998 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:58:49,007 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:58:49,008 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 05:58:49,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:58:49 BoogieIcfgContainer [2023-04-02 05:58:49,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:58:49,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:58:49,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:58:49,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:58:49,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:58:46" (1/3) ... [2023-04-02 05:58:49,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdc662c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:58:49, skipping insertion in model container [2023-04-02 05:58:49,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:58:47" (2/3) ... [2023-04-02 05:58:49,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdc662c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:58:49, skipping insertion in model container [2023-04-02 05:58:49,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:58:49" (3/3) ... [2023-04-02 05:58:49,032 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 05:58:49,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:58:49,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-04-02 05:58:49,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:58:49,127 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;@76884adf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:58:49,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-04-02 05:58:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 453 states have (on average 1.8476821192052981) internal successors, (837), 457 states have internal predecessors, (837), 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 05:58:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 05:58:49,146 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:49,146 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] [2023-04-02 05:58:49,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:49,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash 997070496, now seen corresponding path program 1 times [2023-04-02 05:58:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:49,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665889905] [2023-04-02 05:58:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:49,862 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 05:58:49,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:49,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665889905] [2023-04-02 05:58:49,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665889905] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:49,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:49,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:58:49,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992666041] [2023-04-02 05:58:49,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:49,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:58:49,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:49,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:58:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:49,895 INFO L87 Difference]: Start difference. First operand has 462 states, 453 states have (on average 1.8476821192052981) internal successors, (837), 457 states have internal predecessors, (837), 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 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 05:58:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:52,241 INFO L93 Difference]: Finished difference Result 732 states and 1278 transitions. [2023-04-02 05:58:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:58:52,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 55 [2023-04-02 05:58:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:52,252 INFO L225 Difference]: With dead ends: 732 [2023-04-02 05:58:52,252 INFO L226 Difference]: Without dead ends: 575 [2023-04-02 05:58:52,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:58:52,256 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 440 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:52,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1426 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 05:58:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2023-04-02 05:58:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 569. [2023-04-02 05:58:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 562 states have (on average 1.3434163701067616) internal successors, (755), 565 states have internal predecessors, (755), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 758 transitions. [2023-04-02 05:58:52,306 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 758 transitions. Word has length 55 [2023-04-02 05:58:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:52,306 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 758 transitions. [2023-04-02 05:58:52,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 05:58:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 758 transitions. [2023-04-02 05:58:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 05:58:52,309 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:52,309 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] [2023-04-02 05:58:52,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:58:52,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:52,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:52,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2051131080, now seen corresponding path program 1 times [2023-04-02 05:58:52,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:52,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351044610] [2023-04-02 05:58:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:52,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:52,761 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 05:58:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:52,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351044610] [2023-04-02 05:58:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351044610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:52,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:52,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:58:52,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228337097] [2023-04-02 05:58:52,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:52,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:58:52,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:58:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:58:52,767 INFO L87 Difference]: Start difference. First operand 569 states and 758 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:54,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:54,270 INFO L93 Difference]: Finished difference Result 1068 states and 1467 transitions. [2023-04-02 05:58:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:58:54,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 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 55 [2023-04-02 05:58:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:54,273 INFO L225 Difference]: With dead ends: 1068 [2023-04-02 05:58:54,273 INFO L226 Difference]: Without dead ends: 713 [2023-04-02 05:58:54,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:58:54,275 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1811 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:54,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 423 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:58:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-04-02 05:58:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 706. [2023-04-02 05:58:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 699 states have (on average 1.3605150214592274) internal successors, (951), 702 states have internal predecessors, (951), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 954 transitions. [2023-04-02 05:58:54,324 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 954 transitions. Word has length 55 [2023-04-02 05:58:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:54,324 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 954 transitions. [2023-04-02 05:58:54,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 954 transitions. [2023-04-02 05:58:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 05:58:54,325 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:54,326 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] [2023-04-02 05:58:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:58:54,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:54,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:54,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2137795285, now seen corresponding path program 1 times [2023-04-02 05:58:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:54,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551104381] [2023-04-02 05:58:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:54,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:54,714 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 05:58:54,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551104381] [2023-04-02 05:58:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551104381] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:54,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:54,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:58:54,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654206066] [2023-04-02 05:58:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:54,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:58:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:58:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:58:54,715 INFO L87 Difference]: Start difference. First operand 706 states and 954 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 05:58:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:56,244 INFO L93 Difference]: Finished difference Result 1236 states and 1733 transitions. [2023-04-02 05:58:56,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:58:56,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 55 [2023-04-02 05:58:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:56,248 INFO L225 Difference]: With dead ends: 1236 [2023-04-02 05:58:56,248 INFO L226 Difference]: Without dead ends: 910 [2023-04-02 05:58:56,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:58:56,249 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 305 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:56,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 911 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:58:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-04-02 05:58:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 901. [2023-04-02 05:58:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 894 states have (on average 1.3724832214765101) internal successors, (1227), 897 states have internal predecessors, (1227), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1230 transitions. [2023-04-02 05:58:56,289 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1230 transitions. Word has length 55 [2023-04-02 05:58:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:56,289 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1230 transitions. [2023-04-02 05:58:56,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 05:58:56,289 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1230 transitions. [2023-04-02 05:58:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 05:58:56,290 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:56,290 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] [2023-04-02 05:58:56,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:58:56,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:56,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1619398692, now seen corresponding path program 1 times [2023-04-02 05:58:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:56,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634223940] [2023-04-02 05:58:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:56,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:56,709 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 05:58:56,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:56,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634223940] [2023-04-02 05:58:56,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634223940] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:56,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:58:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334923309] [2023-04-02 05:58:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:58:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:58:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:58:56,711 INFO L87 Difference]: Start difference. First operand 901 states and 1230 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:57,946 INFO L93 Difference]: Finished difference Result 1859 states and 2600 transitions. [2023-04-02 05:58:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:58:57,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 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 55 [2023-04-02 05:58:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:57,950 INFO L225 Difference]: With dead ends: 1859 [2023-04-02 05:58:57,950 INFO L226 Difference]: Without dead ends: 1115 [2023-04-02 05:58:57,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:58:57,952 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1650 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:57,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 398 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:58:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-04-02 05:58:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1106. [2023-04-02 05:58:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1099 states have (on average 1.394904458598726) internal successors, (1533), 1102 states have internal predecessors, (1533), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1536 transitions. [2023-04-02 05:58:58,006 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1536 transitions. Word has length 55 [2023-04-02 05:58:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:58,006 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1536 transitions. [2023-04-02 05:58:58,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1536 transitions. [2023-04-02 05:58:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 05:58:58,007 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:58,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:58:58,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:58:58,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:58,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 26980257, now seen corresponding path program 1 times [2023-04-02 05:58:58,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:58,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747732110] [2023-04-02 05:58:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:58,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:58,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:58:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:58:58,456 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 05:58:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:58:58,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747732110] [2023-04-02 05:58:58,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747732110] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:58:58,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:58:58,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:58:58,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770389477] [2023-04-02 05:58:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:58:58,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:58:58,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:58:58,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:58:58,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:58:58,468 INFO L87 Difference]: Start difference. First operand 1106 states and 1536 transitions. 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 05:58:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:58:59,700 INFO L93 Difference]: Finished difference Result 2822 states and 4020 transitions. [2023-04-02 05:58:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:58:59,700 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 05:58:59,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:58:59,706 INFO L225 Difference]: With dead ends: 2822 [2023-04-02 05:58:59,706 INFO L226 Difference]: Without dead ends: 1808 [2023-04-02 05:58:59,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:58:59,708 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1484 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:58:59,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 350 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:58:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-04-02 05:58:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1802. [2023-04-02 05:58:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1795 states have (on average 1.4167130919220057) internal successors, (2543), 1798 states have internal predecessors, (2543), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:58:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2546 transitions. [2023-04-02 05:58:59,796 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2546 transitions. Word has length 56 [2023-04-02 05:58:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:58:59,796 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2546 transitions. [2023-04-02 05:58:59,796 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 05:58:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2546 transitions. [2023-04-02 05:58:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 05:58:59,797 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:58:59,798 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 05:58:59,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:58:59,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:58:59,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:58:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1061093985, now seen corresponding path program 1 times [2023-04-02 05:58:59,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:58:59,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58556239] [2023-04-02 05:58:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:58:59,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:58:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:00,228 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 05:59:00,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:00,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58556239] [2023-04-02 05:59:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58556239] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:59:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228910179] [2023-04-02 05:59:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:00,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:59:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:59:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:00,229 INFO L87 Difference]: Start difference. First operand 1802 states and 2546 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 05:59:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:01,654 INFO L93 Difference]: Finished difference Result 4624 states and 6568 transitions. [2023-04-02 05:59:01,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:59:01,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 57 [2023-04-02 05:59:01,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:01,664 INFO L225 Difference]: With dead ends: 4624 [2023-04-02 05:59:01,664 INFO L226 Difference]: Without dead ends: 2994 [2023-04-02 05:59:01,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:59:01,669 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 282 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:01,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 769 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:59:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-04-02 05:59:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2970. [2023-04-02 05:59:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2963 states have (on average 1.3901451231859603) internal successors, (4119), 2966 states have internal predecessors, (4119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4122 transitions. [2023-04-02 05:59:01,846 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4122 transitions. Word has length 57 [2023-04-02 05:59:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:01,846 INFO L495 AbstractCegarLoop]: Abstraction has 2970 states and 4122 transitions. [2023-04-02 05:59:01,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 05:59:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4122 transitions. [2023-04-02 05:59:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 05:59:01,848 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:01,848 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] [2023-04-02 05:59:01,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:59:01,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:01,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 645686108, now seen corresponding path program 1 times [2023-04-02 05:59:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627979179] [2023-04-02 05:59:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:02,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:02,290 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 05:59:02,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:02,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627979179] [2023-04-02 05:59:02,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627979179] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:02,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:02,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:59:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197684203] [2023-04-02 05:59:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:59:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:59:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:59:02,292 INFO L87 Difference]: Start difference. First operand 2970 states and 4122 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:04,166 INFO L93 Difference]: Finished difference Result 9652 states and 13615 transitions. [2023-04-02 05:59:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 05:59:04,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 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 58 [2023-04-02 05:59:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:04,188 INFO L225 Difference]: With dead ends: 9652 [2023-04-02 05:59:04,188 INFO L226 Difference]: Without dead ends: 8331 [2023-04-02 05:59:04,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:59:04,192 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 2814 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:04,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2814 Valid, 612 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:59:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2023-04-02 05:59:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 2984. [2023-04-02 05:59:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2977 states have (on average 1.3896540141081626) internal successors, (4137), 2980 states have internal predecessors, (4137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 4140 transitions. [2023-04-02 05:59:04,472 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 4140 transitions. Word has length 58 [2023-04-02 05:59:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:04,472 INFO L495 AbstractCegarLoop]: Abstraction has 2984 states and 4140 transitions. [2023-04-02 05:59:04,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 4140 transitions. [2023-04-02 05:59:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 05:59:04,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:04,474 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] [2023-04-02 05:59:04,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:59:04,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:04,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:04,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2130478097, now seen corresponding path program 1 times [2023-04-02 05:59:04,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:04,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852928622] [2023-04-02 05:59:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:04,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:04,924 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 05:59:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852928622] [2023-04-02 05:59:04,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852928622] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:04,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:04,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:59:04,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088822478] [2023-04-02 05:59:04,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:04,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:59:04,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:59:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:59:04,926 INFO L87 Difference]: Start difference. First operand 2984 states and 4140 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:07,449 INFO L93 Difference]: Finished difference Result 10682 states and 15143 transitions. [2023-04-02 05:59:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 05:59:07,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 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 58 [2023-04-02 05:59:07,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:07,491 INFO L225 Difference]: With dead ends: 10682 [2023-04-02 05:59:07,491 INFO L226 Difference]: Without dead ends: 9564 [2023-04-02 05:59:07,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:59:07,539 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2130 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:07,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 768 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:59:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9564 states. [2023-04-02 05:59:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9564 to 3006. [2023-04-02 05:59:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2999 states have (on average 1.3897965988662888) internal successors, (4168), 3002 states have internal predecessors, (4168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 4171 transitions. [2023-04-02 05:59:08,059 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 4171 transitions. Word has length 58 [2023-04-02 05:59:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:08,059 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 4171 transitions. [2023-04-02 05:59:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 4171 transitions. [2023-04-02 05:59:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 05:59:08,061 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:08,061 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] [2023-04-02 05:59:08,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:59:08,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:08,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 446000278, now seen corresponding path program 1 times [2023-04-02 05:59:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:08,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223977512] [2023-04-02 05:59:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:59:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223977512] [2023-04-02 05:59:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223977512] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:08,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:08,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:59:08,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424408286] [2023-04-02 05:59:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:08,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:59:08,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:59:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:59:08,519 INFO L87 Difference]: Start difference. First operand 3006 states and 4171 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:11,209 INFO L93 Difference]: Finished difference Result 12687 states and 17899 transitions. [2023-04-02 05:59:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 05:59:11,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 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 58 [2023-04-02 05:59:11,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:11,231 INFO L225 Difference]: With dead ends: 12687 [2023-04-02 05:59:11,231 INFO L226 Difference]: Without dead ends: 11719 [2023-04-02 05:59:11,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:59:11,237 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 3288 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:11,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3288 Valid, 668 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:59:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11719 states. [2023-04-02 05:59:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11719 to 3040. [2023-04-02 05:59:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3033 states have (on average 1.3887240356083086) internal successors, (4212), 3036 states have internal predecessors, (4212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 4215 transitions. [2023-04-02 05:59:11,723 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 4215 transitions. Word has length 58 [2023-04-02 05:59:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:11,724 INFO L495 AbstractCegarLoop]: Abstraction has 3040 states and 4215 transitions. [2023-04-02 05:59:11,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 4215 transitions. [2023-04-02 05:59:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 05:59:11,726 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:11,727 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 05:59:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:59:11,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:11,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash -835700472, now seen corresponding path program 1 times [2023-04-02 05:59:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290095187] [2023-04-02 05:59:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:12,482 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 05:59:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:12,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290095187] [2023-04-02 05:59:12,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290095187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:12,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:12,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:59:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859028448] [2023-04-02 05:59:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:59:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:59:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:59:12,484 INFO L87 Difference]: Start difference. First operand 3040 states and 4215 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 05:59:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:15,254 INFO L93 Difference]: Finished difference Result 7268 states and 10279 transitions. [2023-04-02 05:59:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:59:15,255 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 05:59:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:15,266 INFO L225 Difference]: With dead ends: 7268 [2023-04-02 05:59:15,266 INFO L226 Difference]: Without dead ends: 7263 [2023-04-02 05:59:15,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:59:15,267 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2446 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:15,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2446 Valid, 1188 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:59:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2023-04-02 05:59:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 3040. [2023-04-02 05:59:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3033 states have (on average 1.3880646224859874) internal successors, (4210), 3036 states have internal predecessors, (4210), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 4213 transitions. [2023-04-02 05:59:15,694 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 4213 transitions. Word has length 59 [2023-04-02 05:59:15,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:15,695 INFO L495 AbstractCegarLoop]: Abstraction has 3040 states and 4213 transitions. [2023-04-02 05:59:15,695 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 05:59:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 4213 transitions. [2023-04-02 05:59:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 05:59:15,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:15,696 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 05:59:15,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:59:15,697 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:15,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash 218360112, now seen corresponding path program 1 times [2023-04-02 05:59:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948927799] [2023-04-02 05:59:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:59:16,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:16,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948927799] [2023-04-02 05:59:16,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948927799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:16,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:16,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:59:16,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216683499] [2023-04-02 05:59:16,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:16,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:59:16,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:16,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:59:16,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:59:16,228 INFO L87 Difference]: Start difference. First operand 3040 states and 4213 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 05:59:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:19,145 INFO L93 Difference]: Finished difference Result 8765 states and 12372 transitions. [2023-04-02 05:59:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:59:19,146 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 05:59:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:19,188 INFO L225 Difference]: With dead ends: 8765 [2023-04-02 05:59:19,188 INFO L226 Difference]: Without dead ends: 6958 [2023-04-02 05:59:19,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:59:19,208 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 2540 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:19,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 1162 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:59:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2023-04-02 05:59:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 3011. [2023-04-02 05:59:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 3004 states have (on average 1.3878162450066578) internal successors, (4169), 3007 states have internal predecessors, (4169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4172 transitions. [2023-04-02 05:59:19,698 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4172 transitions. Word has length 59 [2023-04-02 05:59:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:19,698 INFO L495 AbstractCegarLoop]: Abstraction has 3011 states and 4172 transitions. [2023-04-02 05:59:19,698 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 05:59:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4172 transitions. [2023-04-02 05:59:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 05:59:19,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:19,700 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 05:59:19,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:59:19,701 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:19,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:19,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1978304003, now seen corresponding path program 1 times [2023-04-02 05:59:19,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:19,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529527831] [2023-04-02 05:59:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:20,194 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 05:59:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:20,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529527831] [2023-04-02 05:59:20,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529527831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:20,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:20,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:59:20,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545026870] [2023-04-02 05:59:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:59:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:59:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:59:20,195 INFO L87 Difference]: Start difference. First operand 3011 states and 4172 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 05:59:22,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:22,835 INFO L93 Difference]: Finished difference Result 7476 states and 10561 transitions. [2023-04-02 05:59:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:59:22,836 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 05:59:22,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:22,844 INFO L225 Difference]: With dead ends: 7476 [2023-04-02 05:59:22,844 INFO L226 Difference]: Without dead ends: 5515 [2023-04-02 05:59:22,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:59:22,847 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 2466 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:22,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 946 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:59:22,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2023-04-02 05:59:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 2924. [2023-04-02 05:59:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2917 states have (on average 1.3873842989372642) internal successors, (4047), 2920 states have internal predecessors, (4047), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 4050 transitions. [2023-04-02 05:59:23,343 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 4050 transitions. Word has length 59 [2023-04-02 05:59:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:23,343 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 4050 transitions. [2023-04-02 05:59:23,343 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 05:59:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 4050 transitions. [2023-04-02 05:59:23,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 05:59:23,345 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:23,345 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 05:59:23,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:59:23,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:23,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1090105926, now seen corresponding path program 1 times [2023-04-02 05:59:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454074075] [2023-04-02 05:59:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:23,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:23,693 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 05:59:23,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:23,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454074075] [2023-04-02 05:59:23,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454074075] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:23,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:23,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:59:23,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650926948] [2023-04-02 05:59:23,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:23,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:59:23,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:23,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:59:23,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:23,695 INFO L87 Difference]: Start difference. First operand 2924 states and 4050 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 05:59:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:25,165 INFO L93 Difference]: Finished difference Result 4197 states and 5861 transitions. [2023-04-02 05:59:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:59:25,166 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 05:59:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:25,170 INFO L225 Difference]: With dead ends: 4197 [2023-04-02 05:59:25,170 INFO L226 Difference]: Without dead ends: 2931 [2023-04-02 05:59:25,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:25,172 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 224 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:25,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 804 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:59:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2023-04-02 05:59:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2924. [2023-04-02 05:59:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2917 states have (on average 1.3736715803908124) internal successors, (4007), 2920 states have internal predecessors, (4007), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 4010 transitions. [2023-04-02 05:59:25,613 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 4010 transitions. Word has length 60 [2023-04-02 05:59:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:25,613 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 4010 transitions. [2023-04-02 05:59:25,613 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 05:59:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 4010 transitions. [2023-04-02 05:59:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 05:59:25,615 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:25,615 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 05:59:25,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:59:25,616 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:25,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash -980349230, now seen corresponding path program 1 times [2023-04-02 05:59:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:25,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242802833] [2023-04-02 05:59:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:25,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:26,014 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 05:59:26,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242802833] [2023-04-02 05:59:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242802833] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:26,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:59:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22219045] [2023-04-02 05:59:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:26,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:59:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:59:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:26,016 INFO L87 Difference]: Start difference. First operand 2924 states and 4010 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 05:59:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:27,489 INFO L93 Difference]: Finished difference Result 4264 states and 5893 transitions. [2023-04-02 05:59:27,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:59:27,489 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 05:59:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:27,493 INFO L225 Difference]: With dead ends: 4264 [2023-04-02 05:59:27,494 INFO L226 Difference]: Without dead ends: 2930 [2023-04-02 05:59:27,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:27,518 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 240 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:27,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 810 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:59:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-04-02 05:59:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2924. [2023-04-02 05:59:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2917 states have (on average 1.3613301336990058) internal successors, (3971), 2920 states have internal predecessors, (3971), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3974 transitions. [2023-04-02 05:59:27,971 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3974 transitions. Word has length 60 [2023-04-02 05:59:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:27,971 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 3974 transitions. [2023-04-02 05:59:27,971 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 05:59:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3974 transitions. [2023-04-02 05:59:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 05:59:27,973 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:27,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:59:27,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:59:27,973 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:27,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash -555343976, now seen corresponding path program 1 times [2023-04-02 05:59:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:27,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936294040] [2023-04-02 05:59:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:28,327 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 05:59:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:28,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936294040] [2023-04-02 05:59:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936294040] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:59:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209521923] [2023-04-02 05:59:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:59:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:59:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:28,329 INFO L87 Difference]: Start difference. First operand 2924 states and 3974 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 05:59:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:29,715 INFO L93 Difference]: Finished difference Result 4014 states and 5462 transitions. [2023-04-02 05:59:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:59:29,715 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 05:59:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:29,726 INFO L225 Difference]: With dead ends: 4014 [2023-04-02 05:59:29,726 INFO L226 Difference]: Without dead ends: 2915 [2023-04-02 05:59:29,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:29,729 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 259 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:29,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 821 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:59:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2023-04-02 05:59:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2909. [2023-04-02 05:59:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2902 states have (on average 1.333907649896623) internal successors, (3871), 2905 states have internal predecessors, (3871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 3874 transitions. [2023-04-02 05:59:30,233 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 3874 transitions. Word has length 60 [2023-04-02 05:59:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:30,233 INFO L495 AbstractCegarLoop]: Abstraction has 2909 states and 3874 transitions. [2023-04-02 05:59:30,233 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 05:59:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 3874 transitions. [2023-04-02 05:59:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 05:59:30,235 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:30,235 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 05:59:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:59:30,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:30,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash 606388403, now seen corresponding path program 1 times [2023-04-02 05:59:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281621323] [2023-04-02 05:59:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:30,578 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 05:59:30,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:30,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281621323] [2023-04-02 05:59:30,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281621323] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:30,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:30,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:59:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875325497] [2023-04-02 05:59:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:30,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:59:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:59:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:30,580 INFO L87 Difference]: Start difference. First operand 2909 states and 3874 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 05:59:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:32,304 INFO L93 Difference]: Finished difference Result 4587 states and 6156 transitions. [2023-04-02 05:59:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:59:32,306 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 05:59:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:32,309 INFO L225 Difference]: With dead ends: 4587 [2023-04-02 05:59:32,310 INFO L226 Difference]: Without dead ends: 3327 [2023-04-02 05:59:32,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:59:32,315 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 327 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:32,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 536 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:59:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2023-04-02 05:59:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 2727. [2023-04-02 05:59:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2720 states have (on average 1.3363970588235294) internal successors, (3635), 2723 states have internal predecessors, (3635), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3638 transitions. [2023-04-02 05:59:32,803 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3638 transitions. Word has length 61 [2023-04-02 05:59:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:32,803 INFO L495 AbstractCegarLoop]: Abstraction has 2727 states and 3638 transitions. [2023-04-02 05:59:32,803 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 05:59:32,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3638 transitions. [2023-04-02 05:59:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:59:32,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:32,818 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 05:59:32,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:59:32,818 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:32,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1159586246, now seen corresponding path program 1 times [2023-04-02 05:59:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:32,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774580041] [2023-04-02 05:59:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:34,446 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 05:59:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774580041] [2023-04-02 05:59:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774580041] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:34,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-02 05:59:34,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221655602] [2023-04-02 05:59:34,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:34,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 05:59:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:34,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 05:59:34,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:59:34,449 INFO L87 Difference]: Start difference. First operand 2727 states and 3638 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 05:59:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:38,891 INFO L93 Difference]: Finished difference Result 4378 states and 5866 transitions. [2023-04-02 05:59:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:59:38,892 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 05:59:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:38,897 INFO L225 Difference]: With dead ends: 4378 [2023-04-02 05:59:38,897 INFO L226 Difference]: Without dead ends: 4374 [2023-04-02 05:59:38,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 05:59:38,899 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 3559 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3559 SdHoareTripleChecker+Valid, 5252 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:38,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3559 Valid, 5252 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 05:59:38,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2023-04-02 05:59:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 2727. [2023-04-02 05:59:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2720 states have (on average 1.3360294117647058) internal successors, (3634), 2723 states have internal predecessors, (3634), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3637 transitions. [2023-04-02 05:59:39,457 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3637 transitions. Word has length 62 [2023-04-02 05:59:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:39,457 INFO L495 AbstractCegarLoop]: Abstraction has 2727 states and 3637 transitions. [2023-04-02 05:59:39,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 05:59:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3637 transitions. [2023-04-02 05:59:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:59:39,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:39,474 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 05:59:39,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 05:59:39,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:39,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1428623930, now seen corresponding path program 1 times [2023-04-02 05:59:39,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:39,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329913925] [2023-04-02 05:59:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:39,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:40,614 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 05:59:40,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329913925] [2023-04-02 05:59:40,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329913925] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:40,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:40,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-02 05:59:40,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164229925] [2023-04-02 05:59:40,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:40,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 05:59:40,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 05:59:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:59:40,615 INFO L87 Difference]: Start difference. First operand 2727 states and 3637 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 05:59:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:45,942 INFO L93 Difference]: Finished difference Result 4462 states and 5980 transitions. [2023-04-02 05:59:45,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 05:59:45,943 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 05:59:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:45,949 INFO L225 Difference]: With dead ends: 4462 [2023-04-02 05:59:45,949 INFO L226 Difference]: Without dead ends: 4458 [2023-04-02 05:59:45,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:59:45,951 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 3179 mSDsluCounter, 5173 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 3502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:45,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3179 Valid, 5645 Invalid, 3502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3467 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 05:59:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2023-04-02 05:59:46,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 2734. [2023-04-02 05:59:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2727 states have (on average 1.335900256692336) internal successors, (3643), 2730 states have internal predecessors, (3643), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 3646 transitions. [2023-04-02 05:59:46,575 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 3646 transitions. Word has length 62 [2023-04-02 05:59:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:46,575 INFO L495 AbstractCegarLoop]: Abstraction has 2734 states and 3646 transitions. [2023-04-02 05:59:46,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 05:59:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 3646 transitions. [2023-04-02 05:59:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:59:46,577 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:46,577 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 05:59:46,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 05:59:46,577 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:46,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash 736496832, now seen corresponding path program 1 times [2023-04-02 05:59:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907080820] [2023-04-02 05:59:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:46,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:47,303 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 05:59:47,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:47,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907080820] [2023-04-02 05:59:47,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907080820] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:47,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:47,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:59:47,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881841892] [2023-04-02 05:59:47,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:59:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:59:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:59:47,306 INFO L87 Difference]: Start difference. First operand 2734 states and 3646 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 05:59:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:51,161 INFO L93 Difference]: Finished difference Result 4894 states and 6625 transitions. [2023-04-02 05:59:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:59:51,162 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 05:59:51,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:51,167 INFO L225 Difference]: With dead ends: 4894 [2023-04-02 05:59:51,167 INFO L226 Difference]: Without dead ends: 4519 [2023-04-02 05:59:51,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:59:51,183 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 2153 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:51,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 2211 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 05:59:51,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2023-04-02 05:59:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 2669. [2023-04-02 05:59:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2663 states have (on average 1.3375891851295532) internal successors, (3562), 2665 states have internal predecessors, (3562), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3565 transitions. [2023-04-02 05:59:51,856 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3565 transitions. Word has length 62 [2023-04-02 05:59:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:51,856 INFO L495 AbstractCegarLoop]: Abstraction has 2669 states and 3565 transitions. [2023-04-02 05:59:51,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 05:59:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3565 transitions. [2023-04-02 05:59:51,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:59:51,866 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:51,866 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 05:59:51,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 05:59:51,867 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:51,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1230171735, now seen corresponding path program 1 times [2023-04-02 05:59:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:51,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301885167] [2023-04-02 05:59:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:52,213 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 05:59:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301885167] [2023-04-02 05:59:52,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301885167] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:52,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:52,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:59:52,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57172381] [2023-04-02 05:59:52,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:52,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:59:52,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:59:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:59:52,215 INFO L87 Difference]: Start difference. First operand 2669 states and 3565 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 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 05:59:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:54,341 INFO L93 Difference]: Finished difference Result 4927 states and 6635 transitions. [2023-04-02 05:59:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:59:54,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 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 05:59:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:54,347 INFO L225 Difference]: With dead ends: 4927 [2023-04-02 05:59:54,347 INFO L226 Difference]: Without dead ends: 3266 [2023-04-02 05:59:54,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:59:54,350 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 265 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:54,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 416 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:59:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2023-04-02 05:59:55,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2528. [2023-04-02 05:59:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2523 states have (on average 1.3404676971858898) internal successors, (3382), 2524 states have internal predecessors, (3382), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:59:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3385 transitions. [2023-04-02 05:59:55,240 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3385 transitions. Word has length 62 [2023-04-02 05:59:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:59:55,241 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 3385 transitions. [2023-04-02 05:59:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 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 05:59:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3385 transitions. [2023-04-02 05:59:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 05:59:55,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:59:55,243 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] [2023-04-02 05:59:55,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 05:59:55,243 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:59:55,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:59:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash -774949502, now seen corresponding path program 1 times [2023-04-02 05:59:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:59:55,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185707872] [2023-04-02 05:59:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:59:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:59:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:55,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:59:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:59:55,999 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 05:59:55,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:59:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185707872] [2023-04-02 05:59:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185707872] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:59:55,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:59:55,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:59:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187165975] [2023-04-02 05:59:56,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:59:56,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:59:56,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:59:56,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:59:56,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:59:56,001 INFO L87 Difference]: Start difference. First operand 2528 states and 3385 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 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 05:59:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:59:59,455 INFO L93 Difference]: Finished difference Result 4359 states and 5879 transitions. [2023-04-02 05:59:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:59:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 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 63 [2023-04-02 05:59:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:59:59,460 INFO L225 Difference]: With dead ends: 4359 [2023-04-02 05:59:59,460 INFO L226 Difference]: Without dead ends: 3953 [2023-04-02 05:59:59,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:59:59,461 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 2106 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:59:59,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 2778 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:59:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2023-04-02 06:00:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 2482. [2023-04-02 06:00:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2478 states have (on average 1.3422114608555287) internal successors, (3326), 2478 states have internal predecessors, (3326), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3329 transitions. [2023-04-02 06:00:00,111 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3329 transitions. Word has length 63 [2023-04-02 06:00:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:00,111 INFO L495 AbstractCegarLoop]: Abstraction has 2482 states and 3329 transitions. [2023-04-02 06:00:00,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 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 06:00:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3329 transitions. [2023-04-02 06:00:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:00:00,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:00,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:00:00,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:00:00,114 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:00,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1098072661, now seen corresponding path program 1 times [2023-04-02 06:00:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536575239] [2023-04-02 06:00:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:00,486 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 06:00:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:00,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536575239] [2023-04-02 06:00:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536575239] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:00,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:00:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525056827] [2023-04-02 06:00:00,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:00:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:00:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:00:00,487 INFO L87 Difference]: Start difference. First operand 2482 states and 3329 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 06:00:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:02,648 INFO L93 Difference]: Finished difference Result 6005 states and 8269 transitions. [2023-04-02 06:00:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:00:02,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 72 [2023-04-02 06:00:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:02,654 INFO L225 Difference]: With dead ends: 6005 [2023-04-02 06:00:02,654 INFO L226 Difference]: Without dead ends: 4494 [2023-04-02 06:00:02,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:00:02,659 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1074 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:02,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 741 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:00:02,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2023-04-02 06:00:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 3845. [2023-04-02 06:00:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3841 states have (on average 1.3431398073418381) internal successors, (5159), 3841 states have internal predecessors, (5159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5162 transitions. [2023-04-02 06:00:03,996 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5162 transitions. Word has length 72 [2023-04-02 06:00:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:03,996 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5162 transitions. [2023-04-02 06:00:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 06:00:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5162 transitions. [2023-04-02 06:00:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:00:03,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:04,000 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 06:00:04,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:00:04,000 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:04,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1892774540, now seen corresponding path program 1 times [2023-04-02 06:00:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:04,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003487108] [2023-04-02 06:00:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:04,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:00:04,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:04,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003487108] [2023-04-02 06:00:04,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003487108] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:04,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:04,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:00:04,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767455033] [2023-04-02 06:00:04,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:04,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:00:04,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:04,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:00:04,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:00:04,467 INFO L87 Difference]: Start difference. First operand 3845 states and 5162 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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 06:00:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:06,482 INFO L93 Difference]: Finished difference Result 3851 states and 5165 transitions. [2023-04-02 06:00:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:00:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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 06:00:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:06,487 INFO L225 Difference]: With dead ends: 3851 [2023-04-02 06:00:06,487 INFO L226 Difference]: Without dead ends: 3380 [2023-04-02 06:00:06,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:00:06,489 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 614 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:06,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 877 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:00:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2023-04-02 06:00:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3376. [2023-04-02 06:00:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 3372 states have (on average 1.347864768683274) internal successors, (4545), 3372 states have internal predecessors, (4545), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4548 transitions. [2023-04-02 06:00:07,662 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4548 transitions. Word has length 73 [2023-04-02 06:00:07,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:07,662 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4548 transitions. [2023-04-02 06:00:07,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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 06:00:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4548 transitions. [2023-04-02 06:00:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:00:07,666 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:07,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:00:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:00:07,667 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:07,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1376100827, now seen corresponding path program 1 times [2023-04-02 06:00:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092811561] [2023-04-02 06:00:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:08,133 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 06:00:08,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:08,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092811561] [2023-04-02 06:00:08,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092811561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:08,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:08,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:00:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852050241] [2023-04-02 06:00:08,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:00:08,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:00:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:00:08,135 INFO L87 Difference]: Start difference. First operand 3376 states and 4548 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:10,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:10,944 INFO L93 Difference]: Finished difference Result 7988 states and 10894 transitions. [2023-04-02 06:00:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:00:10,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-02 06:00:10,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:10,952 INFO L225 Difference]: With dead ends: 7988 [2023-04-02 06:00:10,952 INFO L226 Difference]: Without dead ends: 5378 [2023-04-02 06:00:10,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:00:10,956 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 125 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:10,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 565 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:00:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2023-04-02 06:00:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5060. [2023-04-02 06:00:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 5056 states have (on average 1.340387658227848) internal successors, (6777), 5056 states have internal predecessors, (6777), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 6780 transitions. [2023-04-02 06:00:12,652 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 6780 transitions. Word has length 74 [2023-04-02 06:00:12,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:12,652 INFO L495 AbstractCegarLoop]: Abstraction has 5060 states and 6780 transitions. [2023-04-02 06:00:12,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 6780 transitions. [2023-04-02 06:00:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:00:12,655 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:12,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:00:12,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:00:12,656 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:12,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:12,656 INFO L85 PathProgramCache]: Analyzing trace with hash 671385253, now seen corresponding path program 1 times [2023-04-02 06:00:12,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:12,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377440757] [2023-04-02 06:00:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:12,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:13,168 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 06:00:13,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:13,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377440757] [2023-04-02 06:00:13,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377440757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:13,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:13,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:00:13,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122432566] [2023-04-02 06:00:13,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:13,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:00:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:13,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:00:13,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:00:13,169 INFO L87 Difference]: Start difference. First operand 5060 states and 6780 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:18,021 INFO L93 Difference]: Finished difference Result 13180 states and 17882 transitions. [2023-04-02 06:00:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:00:18,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-02 06:00:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:18,034 INFO L225 Difference]: With dead ends: 13180 [2023-04-02 06:00:18,034 INFO L226 Difference]: Without dead ends: 8920 [2023-04-02 06:00:18,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:00:18,040 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 114 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:18,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 553 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:00:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8920 states. [2023-04-02 06:00:21,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8920 to 8182. [2023-04-02 06:00:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8182 states, 8178 states have (on average 1.3410369283443384) internal successors, (10967), 8178 states have internal predecessors, (10967), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8182 states to 8182 states and 10970 transitions. [2023-04-02 06:00:21,257 INFO L78 Accepts]: Start accepts. Automaton has 8182 states and 10970 transitions. Word has length 75 [2023-04-02 06:00:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:21,258 INFO L495 AbstractCegarLoop]: Abstraction has 8182 states and 10970 transitions. [2023-04-02 06:00:21,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8182 states and 10970 transitions. [2023-04-02 06:00:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:00:21,261 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:21,261 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 06:00:21,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:00:21,263 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:21,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2051167304, now seen corresponding path program 1 times [2023-04-02 06:00:21,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:21,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220685690] [2023-04-02 06:00:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:21,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:21,684 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 06:00:21,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220685690] [2023-04-02 06:00:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220685690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:21,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:00:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950832508] [2023-04-02 06:00:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:00:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:00:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:00:21,685 INFO L87 Difference]: Start difference. First operand 8182 states and 10970 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 06:00:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:28,228 INFO L93 Difference]: Finished difference Result 22146 states and 29844 transitions. [2023-04-02 06:00:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:00:28,229 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 06:00:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:28,251 INFO L225 Difference]: With dead ends: 22146 [2023-04-02 06:00:28,252 INFO L226 Difference]: Without dead ends: 14764 [2023-04-02 06:00:28,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:00:28,265 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 101 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:28,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 537 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:00:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14764 states. [2023-04-02 06:00:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14764 to 13546. [2023-04-02 06:00:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13546 states, 13542 states have (on average 1.3341456210308669) internal successors, (18067), 13542 states have internal predecessors, (18067), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 18070 transitions. [2023-04-02 06:00:33,315 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 18070 transitions. Word has length 77 [2023-04-02 06:00:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:33,316 INFO L495 AbstractCegarLoop]: Abstraction has 13546 states and 18070 transitions. [2023-04-02 06:00:33,316 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 06:00:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 18070 transitions. [2023-04-02 06:00:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:00:33,318 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:33,318 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 06:00:33,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:00:33,319 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:33,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash -344695582, now seen corresponding path program 1 times [2023-04-02 06:00:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:33,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585799155] [2023-04-02 06:00:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:33,798 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 06:00:33,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:33,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585799155] [2023-04-02 06:00:33,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585799155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:33,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:00:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205568327] [2023-04-02 06:00:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:33,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:00:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:00:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:00:33,800 INFO L87 Difference]: Start difference. First operand 13546 states and 18070 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 06:00:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:00:47,766 INFO L93 Difference]: Finished difference Result 28972 states and 38083 transitions. [2023-04-02 06:00:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:00:47,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 06:00:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:00:47,819 INFO L225 Difference]: With dead ends: 28972 [2023-04-02 06:00:47,819 INFO L226 Difference]: Without dead ends: 28970 [2023-04-02 06:00:47,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:00:47,830 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 349 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:00:47,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1326 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:00:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28970 states. [2023-04-02 06:00:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28970 to 14890. [2023-04-02 06:00:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 14886 states have (on average 1.3039768910385596) internal successors, (19411), 14886 states have internal predecessors, (19411), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:00:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 19414 transitions. [2023-04-02 06:00:54,881 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 19414 transitions. Word has length 79 [2023-04-02 06:00:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:00:54,881 INFO L495 AbstractCegarLoop]: Abstraction has 14890 states and 19414 transitions. [2023-04-02 06:00:54,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 06:00:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 19414 transitions. [2023-04-02 06:00:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:00:54,884 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:00:54,884 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] [2023-04-02 06:00:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:00:54,884 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:00:54,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:00:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash 419056987, now seen corresponding path program 1 times [2023-04-02 06:00:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:00:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470011815] [2023-04-02 06:00:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:00:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:00:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:00:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:00:55,358 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 06:00:55,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:00:55,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470011815] [2023-04-02 06:00:55,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470011815] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:00:55,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:00:55,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:00:55,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264625016] [2023-04-02 06:00:55,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:00:55,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:00:55,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:00:55,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:00:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:00:55,360 INFO L87 Difference]: Start difference. First operand 14890 states and 19414 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 06:01:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:05,966 INFO L93 Difference]: Finished difference Result 36086 states and 47008 transitions. [2023-04-02 06:01:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:01:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-02 06:01:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:05,997 INFO L225 Difference]: With dead ends: 36086 [2023-04-02 06:01:05,998 INFO L226 Difference]: Without dead ends: 21996 [2023-04-02 06:01:06,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:01:06,016 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 199 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:06,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 408 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:01:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21996 states. [2023-04-02 06:01:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21996 to 21994. [2023-04-02 06:01:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21994 states, 21990 states have (on average 1.2865393360618462) internal successors, (28291), 21990 states have internal predecessors, (28291), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21994 states to 21994 states and 28294 transitions. [2023-04-02 06:01:15,728 INFO L78 Accepts]: Start accepts. Automaton has 21994 states and 28294 transitions. Word has length 80 [2023-04-02 06:01:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:15,728 INFO L495 AbstractCegarLoop]: Abstraction has 21994 states and 28294 transitions. [2023-04-02 06:01:15,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 06:01:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21994 states and 28294 transitions. [2023-04-02 06:01:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:01:15,731 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:15,731 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 06:01:15,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:01:15,731 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:01:15,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash 624753339, now seen corresponding path program 1 times [2023-04-02 06:01:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:15,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160255308] [2023-04-02 06:01:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:16,140 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 06:01:16,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:16,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160255308] [2023-04-02 06:01:16,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160255308] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:01:16,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:01:16,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:01:16,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256384899] [2023-04-02 06:01:16,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:01:16,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:01:16,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:16,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:01:16,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:01:16,142 INFO L87 Difference]: Start difference. First operand 21994 states and 28294 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 06:01:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:01:30,403 INFO L93 Difference]: Finished difference Result 32442 states and 41986 transitions. [2023-04-02 06:01:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:01:30,404 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 06:01:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:01:30,455 INFO L225 Difference]: With dead ends: 32442 [2023-04-02 06:01:30,455 INFO L226 Difference]: Without dead ends: 27580 [2023-04-02 06:01:30,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:01:30,470 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 646 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:01:30,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 839 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:01:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27580 states. [2023-04-02 06:01:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27580 to 25138. [2023-04-02 06:01:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25138 states, 25134 states have (on average 1.2839579851993317) internal successors, (32271), 25134 states have internal predecessors, (32271), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:01:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25138 states to 25138 states and 32274 transitions. [2023-04-02 06:01:41,953 INFO L78 Accepts]: Start accepts. Automaton has 25138 states and 32274 transitions. Word has length 81 [2023-04-02 06:01:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:01:41,954 INFO L495 AbstractCegarLoop]: Abstraction has 25138 states and 32274 transitions. [2023-04-02 06:01:41,954 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 06:01:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 25138 states and 32274 transitions. [2023-04-02 06:01:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:01:41,962 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:01:41,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:01:41,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:01:41,962 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:01:41,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:01:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1562418484, now seen corresponding path program 1 times [2023-04-02 06:01:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:01:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415240830] [2023-04-02 06:01:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:41,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:01:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:01:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:01:43,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:01:43,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415240830] [2023-04-02 06:01:43,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415240830] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:01:43,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238708638] [2023-04-02 06:01:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:01:43,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:01:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:01:43,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 06:01:43,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 06:01:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:01:43,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 06:01:43,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:01:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:01:44,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:01:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:01:44,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238708638] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:01:44,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:01:44,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 27 [2023-04-02 06:01:44,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088630063] [2023-04-02 06:01:44,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:01:44,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 06:01:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:01:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 06:01:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:01:44,629 INFO L87 Difference]: Start difference. First operand 25138 states and 32274 transitions. Second operand has 27 states, 27 states have (on average 8.74074074074074) internal successors, (236), 25 states have internal predecessors, (236), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 06:02:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:02:29,217 INFO L93 Difference]: Finished difference Result 91549 states and 116639 transitions. [2023-04-02 06:02:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 06:02:29,218 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.74074074074074) internal successors, (236), 25 states have internal predecessors, (236), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 99 [2023-04-02 06:02:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:02:29,352 INFO L225 Difference]: With dead ends: 91549 [2023-04-02 06:02:29,352 INFO L226 Difference]: Without dead ends: 82547 [2023-04-02 06:02:29,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1013, Invalid=3409, Unknown=0, NotChecked=0, Total=4422 [2023-04-02 06:02:29,388 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 3446 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 3229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:02:29,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3446 Valid, 3077 Invalid, 3229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 06:02:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82547 states. [2023-04-02 06:02:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82547 to 25464. [2023-04-02 06:02:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25464 states, 25460 states have (on average 1.2832678711704635) internal successors, (32672), 25460 states have internal predecessors, (32672), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:02:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25464 states to 25464 states and 32675 transitions. [2023-04-02 06:02:41,667 INFO L78 Accepts]: Start accepts. Automaton has 25464 states and 32675 transitions. Word has length 99 [2023-04-02 06:02:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:02:41,667 INFO L495 AbstractCegarLoop]: Abstraction has 25464 states and 32675 transitions. [2023-04-02 06:02:41,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.74074074074074) internal successors, (236), 25 states have internal predecessors, (236), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 06:02:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 25464 states and 32675 transitions. [2023-04-02 06:02:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:02:41,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:02:41,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:02:41,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 06:02:41,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:02:41,886 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:02:41,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:02:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1007447472, now seen corresponding path program 1 times [2023-04-02 06:02:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:02:41,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263843996] [2023-04-02 06:02:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:02:41,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:02:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:02:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:02:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 06:02:42,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:02:42,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263843996] [2023-04-02 06:02:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263843996] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:02:42,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:02:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:02:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359017829] [2023-04-02 06:02:42,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:02:42,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:02:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:02:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:02:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:02:42,374 INFO L87 Difference]: Start difference. First operand 25464 states and 32675 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)