/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/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:14:07,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:14:07,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:14:07,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:14:07,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:14:07,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:14:07,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:14:07,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:14:07,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:14:07,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:14:07,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:14:07,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:14:07,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:14:07,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:14:07,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:14:07,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:14:07,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:14:07,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:14:07,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:14:07,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:14:07,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:14:07,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:14:07,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:14:07,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:14:07,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:14:07,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:14:07,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:14:07,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:14:07,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:14:07,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:14:07,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:14:07,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:14:07,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:14:07,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:14:07,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:14:07,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:14:07,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:14:07,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:14:07,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:14:07,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:14:07,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:14:07,339 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 05:14:07,367 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:14:07,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:14:07,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:14:07,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:14:07,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:14:07,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:14:07,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:14:07,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:14:07,370 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:14:07,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:14:07,371 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:14:07,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:14:07,372 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:14:07,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:14:07,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:14:07,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:14:07,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:14:07,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:14:07,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:14:07,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:14:07,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:14:07,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:14:07,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:14:07,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:14:07,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:14:07,375 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:14:07,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:14:07,375 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:14:07,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:14:07,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:14:07,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:14:07,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:14:07,625 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:14:07,625 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:14:07,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2023-04-02 05:14:08,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:14:08,979 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:14:08,979 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2023-04-02 05:14:08,986 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94962608c/095c7d715fee4a2ebb0763b632cee1e1/FLAGd43be2304 [2023-04-02 05:14:08,998 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94962608c/095c7d715fee4a2ebb0763b632cee1e1 [2023-04-02 05:14:09,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:14:09,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:14:09,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:14:09,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:14:09,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:14:09,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:14:08" (1/1) ... [2023-04-02 05:14:09,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc3f8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09, skipping insertion in model container [2023-04-02 05:14:09,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:14:08" (1/1) ... [2023-04-02 05:14:09,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:14:09,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:14:09,214 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/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c[16964,16977] [2023-04-02 05:14:09,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:14:09,226 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:14:09,289 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/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c[16964,16977] [2023-04-02 05:14:09,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:14:09,300 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:14:09,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09 WrapperNode [2023-04-02 05:14:09,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:14:09,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:14:09,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:14:09,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:14:09,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:14:09,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:14:09,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:14:09,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:14:09,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (1/1) ... [2023-04-02 05:14:09,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:14:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:14:09,383 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 05:14:09,397 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 05:14:09,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:14:09,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:14:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:14:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:14:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:14:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:14:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:14:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:14:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:14:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-02 05:14:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:14:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:14:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:14:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:14:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:14:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:14:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:14:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:14:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:14:09,543 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:14:09,545 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:14:10,017 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:14:10,022 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:14:10,023 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:14:10,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:14:10 BoogieIcfgContainer [2023-04-02 05:14:10,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:14:10,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:14:10,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:14:10,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:14:10,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:14:08" (1/3) ... [2023-04-02 05:14:10,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4518d1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:14:10, skipping insertion in model container [2023-04-02 05:14:10,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:14:09" (2/3) ... [2023-04-02 05:14:10,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4518d1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:14:10, skipping insertion in model container [2023-04-02 05:14:10,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:14:10" (3/3) ... [2023-04-02 05:14:10,031 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2023-04-02 05:14:10,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:14:10,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:14:10,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:14:10,087 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;@3bcf7995, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:14:10,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:14:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 136 states have (on average 1.6764705882352942) internal successors, (228), 138 states have internal predecessors, (228), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 05:14:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 05:14:10,102 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:10,103 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 05:14:10,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:10,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -113969347, now seen corresponding path program 1 times [2023-04-02 05:14:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513071608] [2023-04-02 05:14:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:14:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:14:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 05:14:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 05:14:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:14:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:14:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:14:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:14:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:10,745 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 05:14:10,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:10,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513071608] [2023-04-02 05:14:10,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513071608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:10,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:10,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:14:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417594060] [2023-04-02 05:14:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:10,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:14:10,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:14:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:14:10,776 INFO L87 Difference]: Start difference. First operand has 162 states, 136 states have (on average 1.6764705882352942) internal successors, (228), 138 states have internal predecessors, (228), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:11,725 INFO L93 Difference]: Finished difference Result 270 states and 410 transitions. [2023-04-02 05:14:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:14:11,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 74 [2023-04-02 05:14:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:11,733 INFO L225 Difference]: With dead ends: 270 [2023-04-02 05:14:11,733 INFO L226 Difference]: Without dead ends: 164 [2023-04-02 05:14:11,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:14:11,738 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 681 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:11,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 60 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:14:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-04-02 05:14:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2023-04-02 05:14:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.6616541353383458) internal successors, (221), 134 states have internal predecessors, (221), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:14:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 244 transitions. [2023-04-02 05:14:11,782 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 244 transitions. Word has length 74 [2023-04-02 05:14:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:11,783 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 244 transitions. [2023-04-02 05:14:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 244 transitions. [2023-04-02 05:14:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 05:14:11,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:11,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:11,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:14:11,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:11,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash 446730431, now seen corresponding path program 1 times [2023-04-02 05:14:11,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:11,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624358970] [2023-04-02 05:14:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:11,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:14:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:14:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 05:14:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 05:14:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:14:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:14:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:14:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:14:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:12,227 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 05:14:12,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:12,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624358970] [2023-04-02 05:14:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624358970] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:12,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:14:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962189063] [2023-04-02 05:14:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:14:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:14:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:14:12,229 INFO L87 Difference]: Start difference. First operand 157 states and 244 transitions. Second operand has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:14:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:13,991 INFO L93 Difference]: Finished difference Result 268 states and 402 transitions. [2023-04-02 05:14:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 05:14:13,991 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 74 [2023-04-02 05:14:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:13,993 INFO L225 Difference]: With dead ends: 268 [2023-04-02 05:14:13,993 INFO L226 Difference]: Without dead ends: 164 [2023-04-02 05:14:13,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-04-02 05:14:13,994 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1212 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:13,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 156 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:14:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-04-02 05:14:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2023-04-02 05:14:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.3533834586466165) internal successors, (180), 134 states have internal predecessors, (180), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:14:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2023-04-02 05:14:14,016 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 74 [2023-04-02 05:14:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:14,016 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2023-04-02 05:14:14,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:14:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2023-04-02 05:14:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 05:14:14,021 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:14,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:14,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:14:14,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:14,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash -360204619, now seen corresponding path program 1 times [2023-04-02 05:14:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033014927] [2023-04-02 05:14:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:14,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:14:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:14:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:14:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:14:14,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033014927] [2023-04-02 05:14:14,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033014927] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:14,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:14:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932834189] [2023-04-02 05:14:14,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:14:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:14:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:14:14,899 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 15 states have internal predecessors, (92), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:25,354 INFO L93 Difference]: Finished difference Result 1576 states and 2277 transitions. [2023-04-02 05:14:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-04-02 05:14:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 15 states have internal predecessors, (92), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 114 [2023-04-02 05:14:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:25,362 INFO L225 Difference]: With dead ends: 1576 [2023-04-02 05:14:25,362 INFO L226 Difference]: Without dead ends: 1478 [2023-04-02 05:14:25,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7430 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3498, Invalid=17094, Unknown=0, NotChecked=0, Total=20592 [2023-04-02 05:14:25,369 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 7320 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4094 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7334 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 4595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 4094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:25,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7334 Valid, 231 Invalid, 4595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 4094 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 05:14:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-04-02 05:14:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1363. [2023-04-02 05:14:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1125 states have (on average 1.5253333333333334) internal successors, (1716), 1148 states have internal predecessors, (1716), 108 states have call successors, (108), 108 states have call predecessors, (108), 129 states have return successors, (191), 107 states have call predecessors, (191), 107 states have call successors, (191) [2023-04-02 05:14:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2015 transitions. [2023-04-02 05:14:25,527 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2015 transitions. Word has length 114 [2023-04-02 05:14:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:25,528 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 2015 transitions. [2023-04-02 05:14:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 15 states have internal predecessors, (92), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2015 transitions. [2023-04-02 05:14:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 05:14:25,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:25,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:25,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:14:25,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:25,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1355550261, now seen corresponding path program 1 times [2023-04-02 05:14:25,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:25,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428559631] [2023-04-02 05:14:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:14:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:14:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:14:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:26,214 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 05:14:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428559631] [2023-04-02 05:14:26,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428559631] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:26,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:26,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:14:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841235672] [2023-04-02 05:14:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:26,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:14:26,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:14:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:14:26,216 INFO L87 Difference]: Start difference. First operand 1363 states and 2015 transitions. Second operand has 19 states, 17 states have (on average 5.470588235294118) internal successors, (93), 9 states have internal predecessors, (93), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:28,322 INFO L93 Difference]: Finished difference Result 1602 states and 2364 transitions. [2023-04-02 05:14:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:14:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.470588235294118) internal successors, (93), 9 states have internal predecessors, (93), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 115 [2023-04-02 05:14:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:28,337 INFO L225 Difference]: With dead ends: 1602 [2023-04-02 05:14:28,337 INFO L226 Difference]: Without dead ends: 1600 [2023-04-02 05:14:28,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:14:28,346 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 804 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:28,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 330 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:14:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2023-04-02 05:14:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1426. [2023-04-02 05:14:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1167 states have (on average 1.506426735218509) internal successors, (1758), 1197 states have internal predecessors, (1758), 115 states have call successors, (115), 115 states have call predecessors, (115), 143 states have return successors, (205), 114 states have call predecessors, (205), 114 states have call successors, (205) [2023-04-02 05:14:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2078 transitions. [2023-04-02 05:14:28,485 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2078 transitions. Word has length 115 [2023-04-02 05:14:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:28,485 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 2078 transitions. [2023-04-02 05:14:28,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.470588235294118) internal successors, (93), 9 states have internal predecessors, (93), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2078 transitions. [2023-04-02 05:14:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 05:14:28,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:28,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:28,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:14:28,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:28,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash -566508723, now seen corresponding path program 1 times [2023-04-02 05:14:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:28,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369558485] [2023-04-02 05:14:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:28,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:14:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:14:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:14:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:28,931 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 05:14:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369558485] [2023-04-02 05:14:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369558485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:28,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:14:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700129756] [2023-04-02 05:14:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:28,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:14:28,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:14:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:14:28,934 INFO L87 Difference]: Start difference. First operand 1426 states and 2078 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:31,197 INFO L93 Difference]: Finished difference Result 5303 states and 7773 transitions. [2023-04-02 05:14:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 05:14:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 116 [2023-04-02 05:14:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:31,210 INFO L225 Difference]: With dead ends: 5303 [2023-04-02 05:14:31,210 INFO L226 Difference]: Without dead ends: 3936 [2023-04-02 05:14:31,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:14:31,217 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1553 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:31,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 107 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:14:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2023-04-02 05:14:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3660. [2023-04-02 05:14:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2972 states have (on average 1.5131224764468372) internal successors, (4497), 3049 states have internal predecessors, (4497), 306 states have call successors, (306), 306 states have call predecessors, (306), 381 states have return successors, (600), 305 states have call predecessors, (600), 305 states have call successors, (600) [2023-04-02 05:14:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5403 transitions. [2023-04-02 05:14:31,574 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5403 transitions. Word has length 116 [2023-04-02 05:14:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:31,576 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 5403 transitions. [2023-04-02 05:14:31,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:14:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5403 transitions. [2023-04-02 05:14:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 05:14:31,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:31,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:31,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:14:31,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:31,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1347912048, now seen corresponding path program 1 times [2023-04-02 05:14:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256288622] [2023-04-02 05:14:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:14:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:14:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:14:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:14:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:32,040 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 05:14:32,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:32,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256288622] [2023-04-02 05:14:32,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256288622] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:32,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:32,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:14:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061837101] [2023-04-02 05:14:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:32,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:14:32,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:14:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:14:32,042 INFO L87 Difference]: Start difference. First operand 3660 states and 5403 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:35,306 INFO L93 Difference]: Finished difference Result 9068 states and 13220 transitions. [2023-04-02 05:14:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:14:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 117 [2023-04-02 05:14:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:35,326 INFO L225 Difference]: With dead ends: 9068 [2023-04-02 05:14:35,347 INFO L226 Difference]: Without dead ends: 5467 [2023-04-02 05:14:35,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:14:35,354 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1837 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:35,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 73 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:14:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2023-04-02 05:14:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 3874. [2023-04-02 05:14:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3141 states have (on average 1.5122572429162686) internal successors, (4750), 3231 states have internal predecessors, (4750), 322 states have call successors, (322), 322 states have call predecessors, (322), 410 states have return successors, (636), 320 states have call predecessors, (636), 321 states have call successors, (636) [2023-04-02 05:14:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 5708 transitions. [2023-04-02 05:14:35,689 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 5708 transitions. Word has length 117 [2023-04-02 05:14:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:35,689 INFO L495 AbstractCegarLoop]: Abstraction has 3874 states and 5708 transitions. [2023-04-02 05:14:35,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 5708 transitions. [2023-04-02 05:14:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 05:14:35,692 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:35,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:35,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:14:35,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:35,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:35,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2127357240, now seen corresponding path program 1 times [2023-04-02 05:14:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:35,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909445486] [2023-04-02 05:14:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:35,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:36,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:14:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:14:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:14:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:14:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:36,106 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 05:14:36,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:36,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909445486] [2023-04-02 05:14:36,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909445486] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:36,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:36,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:14:36,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209482181] [2023-04-02 05:14:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:36,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:14:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:14:36,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:14:36,107 INFO L87 Difference]: Start difference. First operand 3874 states and 5708 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:38,704 INFO L93 Difference]: Finished difference Result 8692 states and 12597 transitions. [2023-04-02 05:14:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:14:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 117 [2023-04-02 05:14:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:38,719 INFO L225 Difference]: With dead ends: 8692 [2023-04-02 05:14:38,719 INFO L226 Difference]: Without dead ends: 5028 [2023-04-02 05:14:38,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:14:38,726 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2285 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:38,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2285 Valid, 72 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:14:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2023-04-02 05:14:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 3965. [2023-04-02 05:14:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3218 states have (on average 1.5108763206960845) internal successors, (4862), 3308 states have internal predecessors, (4862), 329 states have call successors, (329), 329 states have call predecessors, (329), 417 states have return successors, (643), 327 states have call predecessors, (643), 328 states have call successors, (643) [2023-04-02 05:14:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5834 transitions. [2023-04-02 05:14:39,104 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5834 transitions. Word has length 117 [2023-04-02 05:14:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:39,104 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 5834 transitions. [2023-04-02 05:14:39,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5834 transitions. [2023-04-02 05:14:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 05:14:39,107 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:39,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:39,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:14:39,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:39,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash -756366647, now seen corresponding path program 1 times [2023-04-02 05:14:39,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:39,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022774699] [2023-04-02 05:14:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:39,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:14:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:14:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:14:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:39,514 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 05:14:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:39,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022774699] [2023-04-02 05:14:39,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022774699] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:39,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:39,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:14:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910823319] [2023-04-02 05:14:39,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:14:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:14:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:14:39,516 INFO L87 Difference]: Start difference. First operand 3965 states and 5834 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:42,140 INFO L93 Difference]: Finished difference Result 8221 states and 11882 transitions. [2023-04-02 05:14:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:14:42,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 117 [2023-04-02 05:14:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:42,155 INFO L225 Difference]: With dead ends: 8221 [2023-04-02 05:14:42,155 INFO L226 Difference]: Without dead ends: 4557 [2023-04-02 05:14:42,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:14:42,163 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2514 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:42,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 68 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:14:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2023-04-02 05:14:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4056. [2023-04-02 05:14:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 3295 states have (on average 1.5095599393019727) internal successors, (4974), 3385 states have internal predecessors, (4974), 336 states have call successors, (336), 336 states have call predecessors, (336), 424 states have return successors, (650), 334 states have call predecessors, (650), 335 states have call successors, (650) [2023-04-02 05:14:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5960 transitions. [2023-04-02 05:14:42,540 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5960 transitions. Word has length 117 [2023-04-02 05:14:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:42,541 INFO L495 AbstractCegarLoop]: Abstraction has 4056 states and 5960 transitions. [2023-04-02 05:14:42,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5960 transitions. [2023-04-02 05:14:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 05:14:42,543 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:42,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:14:42,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:42,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash 974284009, now seen corresponding path program 1 times [2023-04-02 05:14:42,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:42,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700002122] [2023-04-02 05:14:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:14:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:14:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:14:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:14:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:42,951 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 05:14:42,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:42,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700002122] [2023-04-02 05:14:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700002122] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:42,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:42,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:14:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139617731] [2023-04-02 05:14:42,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:42,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:14:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:14:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:14:42,954 INFO L87 Difference]: Start difference. First operand 4056 states and 5960 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:45,853 INFO L93 Difference]: Finished difference Result 10055 states and 14618 transitions. [2023-04-02 05:14:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:14:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 117 [2023-04-02 05:14:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:45,870 INFO L225 Difference]: With dead ends: 10055 [2023-04-02 05:14:45,871 INFO L226 Difference]: Without dead ends: 6174 [2023-04-02 05:14:45,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:14:45,877 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1809 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:45,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 73 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:14:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2023-04-02 05:14:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 4685. [2023-04-02 05:14:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 3809 states have (on average 1.519558939354161) internal successors, (5788), 3930 states have internal predecessors, (5788), 378 states have call successors, (378), 378 states have call predecessors, (378), 497 states have return successors, (754), 376 states have call predecessors, (754), 377 states have call successors, (754) [2023-04-02 05:14:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 6920 transitions. [2023-04-02 05:14:46,320 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 6920 transitions. Word has length 117 [2023-04-02 05:14:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:46,320 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 6920 transitions. [2023-04-02 05:14:46,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 6920 transitions. [2023-04-02 05:14:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 05:14:46,322 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:46,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:46,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:14:46,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:46,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1052167907, now seen corresponding path program 1 times [2023-04-02 05:14:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251266577] [2023-04-02 05:14:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:14:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:14:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:14:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:14:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:14:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:46,719 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 05:14:46,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251266577] [2023-04-02 05:14:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251266577] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:14:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043719681] [2023-04-02 05:14:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:46,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:14:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:14:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:14:46,720 INFO L87 Difference]: Start difference. First operand 4685 states and 6920 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:49,685 INFO L93 Difference]: Finished difference Result 12681 states and 18588 transitions. [2023-04-02 05:14:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:14:49,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 117 [2023-04-02 05:14:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:49,709 INFO L225 Difference]: With dead ends: 12681 [2023-04-02 05:14:49,709 INFO L226 Difference]: Without dead ends: 8106 [2023-04-02 05:14:49,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:14:49,719 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1797 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:49,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 73 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:14:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8106 states. [2023-04-02 05:14:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8106 to 4706. [2023-04-02 05:14:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 3821 states have (on average 1.5215912064904475) internal successors, (5814), 3951 states have internal predecessors, (5814), 378 states have call successors, (378), 378 states have call predecessors, (378), 506 states have return successors, (772), 376 states have call predecessors, (772), 377 states have call successors, (772) [2023-04-02 05:14:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 6964 transitions. [2023-04-02 05:14:50,211 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 6964 transitions. Word has length 117 [2023-04-02 05:14:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:50,211 INFO L495 AbstractCegarLoop]: Abstraction has 4706 states and 6964 transitions. [2023-04-02 05:14:50,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 9 states have internal predecessors, (95), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:14:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 6964 transitions. [2023-04-02 05:14:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-02 05:14:50,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:50,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:50,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:14:50,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:50,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1549245043, now seen corresponding path program 1 times [2023-04-02 05:14:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529704776] [2023-04-02 05:14:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:14:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:14:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:14:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:14:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:14:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:14:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:50,571 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 05:14:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:50,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529704776] [2023-04-02 05:14:50,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529704776] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:50,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:50,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:14:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237388414] [2023-04-02 05:14:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:50,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:14:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:14:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:14:50,573 INFO L87 Difference]: Start difference. First operand 4706 states and 6964 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:14:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:53,185 INFO L93 Difference]: Finished difference Result 9941 states and 14560 transitions. [2023-04-02 05:14:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:14:53,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2023-04-02 05:14:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:53,218 INFO L225 Difference]: With dead ends: 9941 [2023-04-02 05:14:53,218 INFO L226 Difference]: Without dead ends: 6741 [2023-04-02 05:14:53,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:14:53,228 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 741 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:53,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 101 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:14:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2023-04-02 05:14:53,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 5373. [2023-04-02 05:14:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5373 states, 4343 states have (on average 1.5077135620538797) internal successors, (6548), 4454 states have internal predecessors, (6548), 460 states have call successors, (460), 460 states have call predecessors, (460), 569 states have return successors, (880), 458 states have call predecessors, (880), 459 states have call successors, (880) [2023-04-02 05:14:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 7888 transitions. [2023-04-02 05:14:53,814 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 7888 transitions. Word has length 118 [2023-04-02 05:14:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:53,814 INFO L495 AbstractCegarLoop]: Abstraction has 5373 states and 7888 transitions. [2023-04-02 05:14:53,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:14:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 7888 transitions. [2023-04-02 05:14:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 05:14:53,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:53,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:14:53,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:14:53,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:53,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash 836807874, now seen corresponding path program 1 times [2023-04-02 05:14:53,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:53,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454502326] [2023-04-02 05:14:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:53,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:14:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:14:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:14:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:14:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:14:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:14:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:14:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:14:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:14:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:14:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:14:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:14:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 05:14:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 05:14:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 05:14:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 05:14:54,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:54,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454502326] [2023-04-02 05:14:54,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454502326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:54,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:54,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:14:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400638331] [2023-04-02 05:14:54,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:54,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:14:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:14:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:14:54,673 INFO L87 Difference]: Start difference. First operand 5373 states and 7888 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 15 states have internal predecessors, (107), 4 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:15:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:13,260 INFO L93 Difference]: Finished difference Result 13666 states and 19881 transitions. [2023-04-02 05:15:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2023-04-02 05:15:13,260 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 15 states have internal predecessors, (107), 4 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 174 [2023-04-02 05:15:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:13,289 INFO L225 Difference]: With dead ends: 13666 [2023-04-02 05:15:13,289 INFO L226 Difference]: Without dead ends: 10578 [2023-04-02 05:15:13,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24592 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=7089, Invalid=52203, Unknown=0, NotChecked=0, Total=59292 [2023-04-02 05:15:13,308 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 8345 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 6805 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8368 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 7508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 6805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:13,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8368 Valid, 349 Invalid, 7508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 6805 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 05:15:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2023-04-02 05:15:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 9201. [2023-04-02 05:15:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9201 states, 7452 states have (on average 1.5146269457863661) internal successors, (11287), 7612 states have internal predecessors, (11287), 795 states have call successors, (795), 795 states have call predecessors, (795), 953 states have return successors, (1498), 793 states have call predecessors, (1498), 794 states have call successors, (1498) [2023-04-02 05:15:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9201 states to 9201 states and 13580 transitions. [2023-04-02 05:15:14,330 INFO L78 Accepts]: Start accepts. Automaton has 9201 states and 13580 transitions. Word has length 174 [2023-04-02 05:15:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:14,330 INFO L495 AbstractCegarLoop]: Abstraction has 9201 states and 13580 transitions. [2023-04-02 05:15:14,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 15 states have internal predecessors, (107), 4 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:15:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 9201 states and 13580 transitions. [2023-04-02 05:15:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 05:15:14,333 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:14,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:14,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:15:14,334 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:14,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1616253066, now seen corresponding path program 1 times [2023-04-02 05:15:14,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:14,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164767130] [2023-04-02 05:15:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:15:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:15:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:15:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:15:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:15:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:15:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:15:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:15:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:15:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:15:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:15:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:15:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:15:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 05:15:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 05:15:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 05:15:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 05:15:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164767130] [2023-04-02 05:15:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164767130] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:15:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107259303] [2023-04-02 05:15:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:14,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:15:14,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:14,861 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 05:15:14,897 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 05:15:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:15,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 05:15:15,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:15:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:15,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:15:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-02 05:15:15,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107259303] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:15:15,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:15:15,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 11] total 29 [2023-04-02 05:15:15,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639765317] [2023-04-02 05:15:15,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:15:15,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-02 05:15:15,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-02 05:15:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:15:15,985 INFO L87 Difference]: Start difference. First operand 9201 states and 13580 transitions. Second operand has 29 states, 29 states have (on average 9.793103448275861) internal successors, (284), 22 states have internal predecessors, (284), 9 states have call successors, (50), 17 states have call predecessors, (50), 13 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) [2023-04-02 05:15:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:23,314 INFO L93 Difference]: Finished difference Result 34712 states and 50400 transitions. [2023-04-02 05:15:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-02 05:15:23,315 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.793103448275861) internal successors, (284), 22 states have internal predecessors, (284), 9 states have call successors, (50), 17 states have call predecessors, (50), 13 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) Word has length 174 [2023-04-02 05:15:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:23,446 INFO L225 Difference]: With dead ends: 34712 [2023-04-02 05:15:23,446 INFO L226 Difference]: Without dead ends: 25639 [2023-04-02 05:15:23,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 389 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1019, Invalid=3141, Unknown=0, NotChecked=0, Total=4160 [2023-04-02 05:15:23,464 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4142 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:23,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 87 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:15:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25639 states. [2023-04-02 05:15:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25639 to 21066. [2023-04-02 05:15:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21066 states, 16779 states have (on average 1.4901960784313726) internal successors, (25004), 17511 states have internal predecessors, (25004), 1778 states have call successors, (1778), 1778 states have call predecessors, (1778), 2508 states have return successors, (3790), 1776 states have call predecessors, (3790), 1777 states have call successors, (3790) [2023-04-02 05:15:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21066 states to 21066 states and 30572 transitions. [2023-04-02 05:15:26,113 INFO L78 Accepts]: Start accepts. Automaton has 21066 states and 30572 transitions. Word has length 174 [2023-04-02 05:15:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:26,113 INFO L495 AbstractCegarLoop]: Abstraction has 21066 states and 30572 transitions. [2023-04-02 05:15:26,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.793103448275861) internal successors, (284), 22 states have internal predecessors, (284), 9 states have call successors, (50), 17 states have call predecessors, (50), 13 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) [2023-04-02 05:15:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 21066 states and 30572 transitions. [2023-04-02 05:15:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 05:15:26,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:26,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:26,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 05:15:26,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 05:15:26,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:26,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1267470821, now seen corresponding path program 1 times [2023-04-02 05:15:26,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:26,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697037458] [2023-04-02 05:15:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:26,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:15:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:15:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:15:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:15:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:15:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:15:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:15:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:15:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:15:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:15:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:15:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:15:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:15:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 05:15:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:15:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 05:15:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 05:15:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697037458] [2023-04-02 05:15:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697037458] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:15:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220394027] [2023-04-02 05:15:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:26,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:15:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:26,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:15:26,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:15:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 05:15:27,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:15:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:27,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:15:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-02 05:15:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220394027] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:15:27,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:15:27,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 11] total 29 [2023-04-02 05:15:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60153158] [2023-04-02 05:15:27,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:15:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-02 05:15:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-02 05:15:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:15:27,875 INFO L87 Difference]: Start difference. First operand 21066 states and 30572 transitions. Second operand has 29 states, 29 states have (on average 9.655172413793103) internal successors, (280), 22 states have internal predecessors, (280), 9 states have call successors, (50), 17 states have call predecessors, (50), 13 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) [2023-04-02 05:15:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:38,259 INFO L93 Difference]: Finished difference Result 72867 states and 103763 transitions. [2023-04-02 05:15:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:15:38,261 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.655172413793103) internal successors, (280), 22 states have internal predecessors, (280), 9 states have call successors, (50), 17 states have call predecessors, (50), 13 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) Word has length 174 [2023-04-02 05:15:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:38,454 INFO L225 Difference]: With dead ends: 72867 [2023-04-02 05:15:38,454 INFO L226 Difference]: Without dead ends: 51953 [2023-04-02 05:15:38,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 386 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=960, Invalid=2946, Unknown=0, NotChecked=0, Total=3906 [2023-04-02 05:15:38,502 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4214 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:38,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4216 Valid, 85 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:15:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51953 states. [2023-04-02 05:15:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51953 to 46424. [2023-04-02 05:15:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46424 states, 36389 states have (on average 1.4585726455797081) internal successors, (53076), 38837 states have internal predecessors, (53076), 3794 states have call successors, (3794), 3794 states have call predecessors, (3794), 6240 states have return successors, (9084), 3792 states have call predecessors, (9084), 3793 states have call successors, (9084) [2023-04-02 05:15:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46424 states to 46424 states and 65954 transitions. [2023-04-02 05:15:44,628 INFO L78 Accepts]: Start accepts. Automaton has 46424 states and 65954 transitions. Word has length 174 [2023-04-02 05:15:44,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:44,628 INFO L495 AbstractCegarLoop]: Abstraction has 46424 states and 65954 transitions. [2023-04-02 05:15:44,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.655172413793103) internal successors, (280), 22 states have internal predecessors, (280), 9 states have call successors, (50), 17 states have call predecessors, (50), 13 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) [2023-04-02 05:15:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 46424 states and 65954 transitions. [2023-04-02 05:15:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 05:15:44,642 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:44,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:44,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:15:44,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-02 05:15:44,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:44,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:44,851 INFO L85 PathProgramCache]: Analyzing trace with hash 463179835, now seen corresponding path program 1 times [2023-04-02 05:15:44,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:44,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066955038] [2023-04-02 05:15:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:44,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:15:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:15:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:15:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:15:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:15:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:15:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:15:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:15:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:15:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:15:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:15:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:15:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:15:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 05:15:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 05:15:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 05:15:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-04-02 05:15:45,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:45,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066955038] [2023-04-02 05:15:45,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066955038] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:45,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:45,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:15:45,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353255741] [2023-04-02 05:15:45,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:45,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:15:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:45,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:15:45,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:15:45,703 INFO L87 Difference]: Start difference. First operand 46424 states and 65954 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 15 states have internal predecessors, (108), 4 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:16:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:12,152 INFO L93 Difference]: Finished difference Result 118761 states and 167814 transitions. [2023-04-02 05:16:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2023-04-02 05:16:12,153 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 15 states have internal predecessors, (108), 4 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 174 [2023-04-02 05:16:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:12,430 INFO L225 Difference]: With dead ends: 118761 [2023-04-02 05:16:12,430 INFO L226 Difference]: Without dead ends: 92075 [2023-04-02 05:16:12,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25131 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=7221, Invalid=53541, Unknown=0, NotChecked=0, Total=60762 [2023-04-02 05:16:12,495 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 7467 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 8543 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7490 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 9260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 8543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:12,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7490 Valid, 436 Invalid, 9260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 8543 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 05:16:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92075 states. [2023-04-02 05:16:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92075 to 74128. [2023-04-02 05:16:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74128 states, 58145 states have (on average 1.4610370625161235) internal successors, (84952), 62141 states have internal predecessors, (84952), 5994 states have call successors, (5994), 5994 states have call predecessors, (5994), 9988 states have return successors, (14472), 5992 states have call predecessors, (14472), 5993 states have call successors, (14472) [2023-04-02 05:16:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74128 states to 74128 states and 105418 transitions. [2023-04-02 05:16:22,180 INFO L78 Accepts]: Start accepts. Automaton has 74128 states and 105418 transitions. Word has length 174 [2023-04-02 05:16:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:22,181 INFO L495 AbstractCegarLoop]: Abstraction has 74128 states and 105418 transitions. [2023-04-02 05:16:22,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 15 states have internal predecessors, (108), 4 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:16:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 74128 states and 105418 transitions. [2023-04-02 05:16:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 05:16:22,203 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:22,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:16:22,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:16:22,204 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:22,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash 541063733, now seen corresponding path program 1 times [2023-04-02 05:16:22,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:22,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991309299] [2023-04-02 05:16:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:22,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:16:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:16:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:16:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:16:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:16:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:16:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:16:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:16:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:16:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 05:16:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:16:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 05:16:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 05:16:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 05:16:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-02 05:16:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991309299] [2023-04-02 05:16:23,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991309299] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:23,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:23,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:16:23,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653585089] [2023-04-02 05:16:23,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:23,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:16:23,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:23,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:16:23,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:16:23,188 INFO L87 Difference]: Start difference. First operand 74128 states and 105418 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 15 states have internal predecessors, (108), 4 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 05:16:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:56,718 INFO L93 Difference]: Finished difference Result 175861 states and 249272 transitions. [2023-04-02 05:16:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2023-04-02 05:16:56,719 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 15 states have internal predecessors, (108), 4 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 174 [2023-04-02 05:16:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:57,354 INFO L225 Difference]: With dead ends: 175861 [2023-04-02 05:16:57,354 INFO L226 Difference]: Without dead ends: 138003 [2023-04-02 05:16:57,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26000 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=7389, Invalid=55361, Unknown=0, NotChecked=0, Total=62750 [2023-04-02 05:16:57,433 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 7491 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 8001 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7513 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 8691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 8001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:57,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7513 Valid, 414 Invalid, 8691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 8001 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-02 05:16:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138003 states. [2023-04-02 05:17:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138003 to 101396. [2023-04-02 05:17:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101396 states, 79659 states have (on average 1.4651200743167752) internal successors, (116710), 85129 states have internal predecessors, (116710), 8134 states have call successors, (8134), 8134 states have call predecessors, (8134), 13602 states have return successors, (19622), 8132 states have call predecessors, (19622), 8133 states have call successors, (19622) [2023-04-02 05:17:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101396 states to 101396 states and 144466 transitions. [2023-04-02 05:17:11,653 INFO L78 Accepts]: Start accepts. Automaton has 101396 states and 144466 transitions. Word has length 174 [2023-04-02 05:17:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:11,654 INFO L495 AbstractCegarLoop]: Abstraction has 101396 states and 144466 transitions. [2023-04-02 05:17:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 15 states have internal predecessors, (108), 4 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 05:17:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 101396 states and 144466 transitions. [2023-04-02 05:17:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 05:17:11,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:11,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:11,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:17:11,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:11,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash 645547450, now seen corresponding path program 1 times [2023-04-02 05:17:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:11,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290318212] [2023-04-02 05:17:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:11,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:17:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:17:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:17:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:17:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:17:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:17:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:17:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:17:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:17:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:17:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:17:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:17:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 05:17:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:17:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 05:17:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-02 05:17:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290318212] [2023-04-02 05:17:12,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290318212] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:12,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:12,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:17:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690895781] [2023-04-02 05:17:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:12,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:17:12,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:12,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:17:12,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:17:12,700 INFO L87 Difference]: Start difference. First operand 101396 states and 144466 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 15 states have internal predecessors, (111), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:18:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:01,470 INFO L93 Difference]: Finished difference Result 342433 states and 484996 transitions. [2023-04-02 05:18:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2023-04-02 05:18:01,470 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 15 states have internal predecessors, (111), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 174 [2023-04-02 05:18:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:02,609 INFO L225 Difference]: With dead ends: 342433 [2023-04-02 05:18:02,609 INFO L226 Difference]: Without dead ends: 243163 [2023-04-02 05:18:02,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23935 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=6949, Invalid=50891, Unknown=0, NotChecked=0, Total=57840 [2023-04-02 05:18:02,782 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 8119 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 6505 mSolverCounterSat, 844 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8142 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 7349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 6505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:02,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8142 Valid, 350 Invalid, 7349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 6505 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 05:18:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243163 states.