/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:46:02,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:46:02,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:46:02,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 06:46:02,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:46:02,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:46:02,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:46:02,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:46:02,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:46:02,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:46:02,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:46:02,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:46:02,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:46:02,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:46:02,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:46:02,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:46:02,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:46:02,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:46:02,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:46:02,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:46:02,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:46:02,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:46:02,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:46:02,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:46:02,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:46:02,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:46:02,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:46:02,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:46:02,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:46:02,232 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:46:02,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:46:02,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:46:02,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:46:02,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:46:02,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:46:02,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:46:02,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:46:02,235 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:46:02,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:46:02,236 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:46:02,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:46:02,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:46:02,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:46:02,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:46:02,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:46:02,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:46:02,237 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:46:02,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:46:02,238 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:46:02,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:46:02,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:46:02,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:46:02,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:46:02,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:46:02,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:46:02,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:46:02,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:46:02,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:46:02,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:46:02,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:46:02,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:46:02,240 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:46:02,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:46:02,240 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:46:02,240 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:46:02,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:46:02,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:46:02,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:46:02,480 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:46:02,481 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:46:02,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:46:03,690 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:46:03,982 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:46:03,983 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:46:03,991 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1400ce21c/75c05850cc1a4664ab23297cd345fdfb/FLAG6b210fd2f [2023-04-02 06:46:04,001 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1400ce21c/75c05850cc1a4664ab23297cd345fdfb [2023-04-02 06:46:04,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:46:04,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:46:04,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:46:04,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:46:04,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:46:04,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249a9ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04, skipping insertion in model container [2023-04-02 06:46:04,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:46:04,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:46:04,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2023-04-02 06:46:04,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:46:04,352 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:46:04,421 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2023-04-02 06:46:04,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:46:04,478 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:46:04,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04 WrapperNode [2023-04-02 06:46:04,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:46:04,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:46:04,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:46:04,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:46:04,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,555 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:46:04,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:46:04,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:46:04,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:46:04,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (1/1) ... [2023-04-02 06:46:04,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:46:04,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:46:04,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:46:04,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:46:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:46:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:46:04,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:46:04,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:46:04,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:46:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:46:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:46:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:46:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:46:04,819 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:46:04,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:46:05,518 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:46:05,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:46:05,530 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:46:05,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:46:05 BoogieIcfgContainer [2023-04-02 06:46:05,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:46:05,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:46:05,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:46:05,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:46:05,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:46:04" (1/3) ... [2023-04-02 06:46:05,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a17a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:46:05, skipping insertion in model container [2023-04-02 06:46:05,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:46:04" (2/3) ... [2023-04-02 06:46:05,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a17a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:46:05, skipping insertion in model container [2023-04-02 06:46:05,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:46:05" (3/3) ... [2023-04-02 06:46:05,540 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:46:05,552 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:46:05,552 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:46:05,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:46:05,601 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;@7df5208d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:46:05,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:46:05,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 200 states have (on average 1.76) internal successors, (352), 202 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:46:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-02 06:46:05,617 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:05,617 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] [2023-04-02 06:46:05,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:05,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:05,622 INFO L85 PathProgramCache]: Analyzing trace with hash -919913801, now seen corresponding path program 1 times [2023-04-02 06:46:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:05,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672563821] [2023-04-02 06:46:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:05,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672563821] [2023-04-02 06:46:06,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672563821] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:06,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:06,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427331256] [2023-04-02 06:46:06,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:06,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:06,848 INFO L87 Difference]: Start difference. First operand has 207 states, 200 states have (on average 1.76) internal successors, (352), 202 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 9 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:09,331 INFO L93 Difference]: Finished difference Result 1468 states and 2341 transitions. [2023-04-02 06:46:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:46:09,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 9 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-02 06:46:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:09,357 INFO L225 Difference]: With dead ends: 1468 [2023-04-02 06:46:09,357 INFO L226 Difference]: Without dead ends: 1322 [2023-04-02 06:46:09,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:46:09,369 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 2783 mSDsluCounter, 4644 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 5416 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:09,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2783 Valid, 5416 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:46:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2023-04-02 06:46:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 305. [2023-04-02 06:46:09,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 301 states have (on average 1.441860465116279) internal successors, (434), 301 states have internal predecessors, (434), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 437 transitions. [2023-04-02 06:46:09,449 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 437 transitions. Word has length 111 [2023-04-02 06:46:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:09,450 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 437 transitions. [2023-04-02 06:46:09,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 9 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 437 transitions. [2023-04-02 06:46:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:09,453 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:09,453 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] [2023-04-02 06:46:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:46:09,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:09,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1345702492, now seen corresponding path program 1 times [2023-04-02 06:46:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:09,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039376317] [2023-04-02 06:46:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:09,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039376317] [2023-04-02 06:46:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039376317] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:09,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:09,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803019351] [2023-04-02 06:46:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:09,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:09,988 INFO L87 Difference]: Start difference. First operand 305 states and 437 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:11,837 INFO L93 Difference]: Finished difference Result 1546 states and 2397 transitions. [2023-04-02 06:46:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:11,844 INFO L225 Difference]: With dead ends: 1546 [2023-04-02 06:46:11,844 INFO L226 Difference]: Without dead ends: 1388 [2023-04-02 06:46:11,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:11,846 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1910 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:11,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1910 Valid, 3166 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:46:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2023-04-02 06:46:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 383. [2023-04-02 06:46:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 379 states have (on average 1.4722955145118735) internal successors, (558), 379 states have internal predecessors, (558), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 561 transitions. [2023-04-02 06:46:11,906 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 561 transitions. Word has length 113 [2023-04-02 06:46:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:11,908 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 561 transitions. [2023-04-02 06:46:11,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:11,909 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 561 transitions. [2023-04-02 06:46:11,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:11,920 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:11,920 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] [2023-04-02 06:46:11,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:46:11,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:11,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1847002315, now seen corresponding path program 1 times [2023-04-02 06:46:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450502906] [2023-04-02 06:46:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:12,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450502906] [2023-04-02 06:46:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450502906] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:12,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298871386] [2023-04-02 06:46:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:12,386 INFO L87 Difference]: Start difference. First operand 383 states and 561 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:13,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:13,983 INFO L93 Difference]: Finished difference Result 1640 states and 2546 transitions. [2023-04-02 06:46:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:13,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:13,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:13,990 INFO L225 Difference]: With dead ends: 1640 [2023-04-02 06:46:13,990 INFO L226 Difference]: Without dead ends: 1482 [2023-04-02 06:46:13,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:13,993 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 2119 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:13,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 2665 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:46:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-04-02 06:46:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 576. [2023-04-02 06:46:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 572 states have (on average 1.5104895104895104) internal successors, (864), 572 states have internal predecessors, (864), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 867 transitions. [2023-04-02 06:46:14,108 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 867 transitions. Word has length 113 [2023-04-02 06:46:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:14,108 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 867 transitions. [2023-04-02 06:46:14,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 867 transitions. [2023-04-02 06:46:14,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:14,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:14,110 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] [2023-04-02 06:46:14,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:46:14,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:14,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:14,111 INFO L85 PathProgramCache]: Analyzing trace with hash -9111477, now seen corresponding path program 1 times [2023-04-02 06:46:14,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:14,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122160241] [2023-04-02 06:46:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:14,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:14,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:14,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122160241] [2023-04-02 06:46:14,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122160241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:14,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:14,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81806271] [2023-04-02 06:46:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:14,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:14,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:14,568 INFO L87 Difference]: Start difference. First operand 576 states and 867 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:16,014 INFO L93 Difference]: Finished difference Result 1729 states and 2687 transitions. [2023-04-02 06:46:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:16,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:16,021 INFO L225 Difference]: With dead ends: 1729 [2023-04-02 06:46:16,021 INFO L226 Difference]: Without dead ends: 1571 [2023-04-02 06:46:16,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:16,023 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2322 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:16,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2322 Valid, 2546 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:46:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2023-04-02 06:46:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 660. [2023-04-02 06:46:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 656 states have (on average 1.5198170731707317) internal successors, (997), 656 states have internal predecessors, (997), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1000 transitions. [2023-04-02 06:46:16,140 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1000 transitions. Word has length 113 [2023-04-02 06:46:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:16,141 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1000 transitions. [2023-04-02 06:46:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1000 transitions. [2023-04-02 06:46:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:16,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:16,142 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] [2023-04-02 06:46:16,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:46:16,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:16,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -744885384, now seen corresponding path program 1 times [2023-04-02 06:46:16,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:16,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330494114] [2023-04-02 06:46:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:16,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330494114] [2023-04-02 06:46:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330494114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:16,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:16,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255390814] [2023-04-02 06:46:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:16,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:16,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:16,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:16,627 INFO L87 Difference]: Start difference. First operand 660 states and 1000 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:17,967 INFO L93 Difference]: Finished difference Result 1808 states and 2812 transitions. [2023-04-02 06:46:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:17,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:17,974 INFO L225 Difference]: With dead ends: 1808 [2023-04-02 06:46:17,974 INFO L226 Difference]: Without dead ends: 1650 [2023-04-02 06:46:17,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:17,976 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2832 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2832 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:17,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2832 Valid, 2336 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:46:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2023-04-02 06:46:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 739. [2023-04-02 06:46:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 735 states have (on average 1.526530612244898) internal successors, (1122), 735 states have internal predecessors, (1122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1125 transitions. [2023-04-02 06:46:18,108 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1125 transitions. Word has length 113 [2023-04-02 06:46:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:18,109 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1125 transitions. [2023-04-02 06:46:18,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1125 transitions. [2023-04-02 06:46:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:18,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:18,110 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] [2023-04-02 06:46:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:46:18,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:18,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1966751611, now seen corresponding path program 1 times [2023-04-02 06:46:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:18,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707020206] [2023-04-02 06:46:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:18,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:18,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707020206] [2023-04-02 06:46:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707020206] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:18,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:18,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:18,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814935572] [2023-04-02 06:46:18,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:18,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:18,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:18,790 INFO L87 Difference]: Start difference. First operand 739 states and 1125 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:19,949 INFO L93 Difference]: Finished difference Result 1601 states and 2492 transitions. [2023-04-02 06:46:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:19,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:19,954 INFO L225 Difference]: With dead ends: 1601 [2023-04-02 06:46:19,954 INFO L226 Difference]: Without dead ends: 1053 [2023-04-02 06:46:19,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:46:19,957 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 807 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:19,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1236 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:46:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-04-02 06:46:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1051. [2023-04-02 06:46:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1047 states have (on average 1.5396370582617) internal successors, (1612), 1047 states have internal predecessors, (1612), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1615 transitions. [2023-04-02 06:46:20,189 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1615 transitions. Word has length 113 [2023-04-02 06:46:20,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:20,189 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1615 transitions. [2023-04-02 06:46:20,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1615 transitions. [2023-04-02 06:46:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:20,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:20,191 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] [2023-04-02 06:46:20,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:46:20,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:20,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1723627260, now seen corresponding path program 1 times [2023-04-02 06:46:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953737017] [2023-04-02 06:46:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:20,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:20,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953737017] [2023-04-02 06:46:20,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953737017] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:20,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:20,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:20,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634755683] [2023-04-02 06:46:20,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:20,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:20,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:20,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:20,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:20,488 INFO L87 Difference]: Start difference. First operand 1051 states and 1615 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:21,131 INFO L93 Difference]: Finished difference Result 1917 states and 2981 transitions. [2023-04-02 06:46:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:46:21,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:21,136 INFO L225 Difference]: With dead ends: 1917 [2023-04-02 06:46:21,136 INFO L226 Difference]: Without dead ends: 1046 [2023-04-02 06:46:21,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:21,141 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:21,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 532 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-04-02 06:46:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2023-04-02 06:46:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1042 states have (on average 1.5316698656429943) internal successors, (1596), 1042 states have internal predecessors, (1596), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1599 transitions. [2023-04-02 06:46:21,359 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1599 transitions. Word has length 113 [2023-04-02 06:46:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:21,360 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1599 transitions. [2023-04-02 06:46:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1599 transitions. [2023-04-02 06:46:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:21,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:21,361 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] [2023-04-02 06:46:21,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:46:21,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:21,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1423003970, now seen corresponding path program 1 times [2023-04-02 06:46:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472516018] [2023-04-02 06:46:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:21,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:21,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:21,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472516018] [2023-04-02 06:46:21,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472516018] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:21,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:21,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:21,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562394027] [2023-04-02 06:46:21,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:21,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:21,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:21,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:21,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:21,791 INFO L87 Difference]: Start difference. First operand 1046 states and 1599 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:23,214 INFO L93 Difference]: Finished difference Result 2186 states and 3382 transitions. [2023-04-02 06:46:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:23,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:23,220 INFO L225 Difference]: With dead ends: 2186 [2023-04-02 06:46:23,220 INFO L226 Difference]: Without dead ends: 2029 [2023-04-02 06:46:23,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:23,222 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2115 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:23,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 2705 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:46:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2023-04-02 06:46:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1201. [2023-04-02 06:46:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1197 states have (on average 1.5371762740183792) internal successors, (1840), 1197 states have internal predecessors, (1840), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1843 transitions. [2023-04-02 06:46:23,427 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1843 transitions. Word has length 113 [2023-04-02 06:46:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:23,427 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1843 transitions. [2023-04-02 06:46:23,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1843 transitions. [2023-04-02 06:46:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:23,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:23,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:23,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:46:23,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:23,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash 64513294, now seen corresponding path program 1 times [2023-04-02 06:46:23,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:23,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751462563] [2023-04-02 06:46:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:23,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751462563] [2023-04-02 06:46:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751462563] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:23,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:23,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:23,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817752940] [2023-04-02 06:46:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:23,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:23,853 INFO L87 Difference]: Start difference. First operand 1201 states and 1843 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:25,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:25,259 INFO L93 Difference]: Finished difference Result 2347 states and 3635 transitions. [2023-04-02 06:46:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:25,260 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:25,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:25,267 INFO L225 Difference]: With dead ends: 2347 [2023-04-02 06:46:25,267 INFO L226 Difference]: Without dead ends: 2190 [2023-04-02 06:46:25,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:25,269 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 2167 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:25,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2167 Valid, 3627 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:46:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2023-04-02 06:46:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1367. [2023-04-02 06:46:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1363 states have (on average 1.5414526779163609) internal successors, (2101), 1363 states have internal predecessors, (2101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2104 transitions. [2023-04-02 06:46:25,551 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2104 transitions. Word has length 113 [2023-04-02 06:46:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:25,551 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 2104 transitions. [2023-04-02 06:46:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2104 transitions. [2023-04-02 06:46:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:46:25,553 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:25,553 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] [2023-04-02 06:46:25,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:46:25,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:25,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:25,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1108152095, now seen corresponding path program 1 times [2023-04-02 06:46:25,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:25,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327183094] [2023-04-02 06:46:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:25,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327183094] [2023-04-02 06:46:25,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327183094] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:25,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402129280] [2023-04-02 06:46:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:25,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:25,965 INFO L87 Difference]: Start difference. First operand 1367 states and 2104 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:27,269 INFO L93 Difference]: Finished difference Result 2523 states and 3912 transitions. [2023-04-02 06:46:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:27,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:46:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:27,277 INFO L225 Difference]: With dead ends: 2523 [2023-04-02 06:46:27,277 INFO L226 Difference]: Without dead ends: 2366 [2023-04-02 06:46:27,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:27,279 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 2296 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:27,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 3223 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:46:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2023-04-02 06:46:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 1543. [2023-04-02 06:46:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.5451591942820013) internal successors, (2378), 1539 states have internal predecessors, (2378), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2381 transitions. [2023-04-02 06:46:27,564 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2381 transitions. Word has length 113 [2023-04-02 06:46:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:27,564 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2381 transitions. [2023-04-02 06:46:27,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2381 transitions. [2023-04-02 06:46:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:46:27,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:27,566 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 06:46:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:46:27,566 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:27,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash 837848616, now seen corresponding path program 1 times [2023-04-02 06:46:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:27,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203474627] [2023-04-02 06:46:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203474627] [2023-04-02 06:46:27,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203474627] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:27,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:27,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051768992] [2023-04-02 06:46:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:27,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:27,876 INFO L87 Difference]: Start difference. First operand 1543 states and 2381 transitions. Second operand has 6 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:28,695 INFO L93 Difference]: Finished difference Result 3006 states and 4676 transitions. [2023-04-02 06:46:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:46:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:28,709 INFO L225 Difference]: With dead ends: 3006 [2023-04-02 06:46:28,709 INFO L226 Difference]: Without dead ends: 1543 [2023-04-02 06:46:28,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:46:28,713 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 678 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:28,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 192 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:28,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-04-02 06:46:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-04-02 06:46:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.5334632878492527) internal successors, (2360), 1539 states have internal predecessors, (2360), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2363 transitions. [2023-04-02 06:46:28,982 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2363 transitions. Word has length 114 [2023-04-02 06:46:28,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:28,983 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2363 transitions. [2023-04-02 06:46:28,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2363 transitions. [2023-04-02 06:46:28,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 06:46:28,984 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:28,985 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 06:46:28,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:46:28,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:28,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash 979898918, now seen corresponding path program 1 times [2023-04-02 06:46:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:28,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18696451] [2023-04-02 06:46:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:28,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:29,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:29,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18696451] [2023-04-02 06:46:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18696451] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:29,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:29,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:29,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676084351] [2023-04-02 06:46:29,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:29,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:29,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:29,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:29,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:29,304 INFO L87 Difference]: Start difference. First operand 1543 states and 2363 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:30,227 INFO L93 Difference]: Finished difference Result 3022 states and 4660 transitions. [2023-04-02 06:46:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:30,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-02 06:46:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:30,232 INFO L225 Difference]: With dead ends: 3022 [2023-04-02 06:46:30,232 INFO L226 Difference]: Without dead ends: 1543 [2023-04-02 06:46:30,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:46:30,235 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 716 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:30,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 160 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:46:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-04-02 06:46:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-04-02 06:46:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.5217673814165043) internal successors, (2342), 1539 states have internal predecessors, (2342), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2345 transitions. [2023-04-02 06:46:30,563 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2345 transitions. Word has length 115 [2023-04-02 06:46:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:30,563 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2345 transitions. [2023-04-02 06:46:30,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2345 transitions. [2023-04-02 06:46:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:46:30,564 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:30,565 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 06:46:30,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:46:30,565 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:30,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash -410224216, now seen corresponding path program 1 times [2023-04-02 06:46:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657473594] [2023-04-02 06:46:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:30,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:30,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657473594] [2023-04-02 06:46:30,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657473594] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:30,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:30,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474035098] [2023-04-02 06:46:30,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:30,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:30,899 INFO L87 Difference]: Start difference. First operand 1543 states and 2345 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:31,778 INFO L93 Difference]: Finished difference Result 3018 states and 4620 transitions. [2023-04-02 06:46:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:31,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2023-04-02 06:46:31,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:31,783 INFO L225 Difference]: With dead ends: 3018 [2023-04-02 06:46:31,783 INFO L226 Difference]: Without dead ends: 1543 [2023-04-02 06:46:31,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:46:31,786 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 698 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:31,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 168 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-04-02 06:46:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-04-02 06:46:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.5100714749837556) internal successors, (2324), 1539 states have internal predecessors, (2324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2327 transitions. [2023-04-02 06:46:32,133 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2327 transitions. Word has length 116 [2023-04-02 06:46:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:32,134 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2327 transitions. [2023-04-02 06:46:32,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2327 transitions. [2023-04-02 06:46:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 06:46:32,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:32,135 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 06:46:32,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:46:32,136 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:32,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash 732100055, now seen corresponding path program 1 times [2023-04-02 06:46:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:32,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585928131] [2023-04-02 06:46:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:32,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585928131] [2023-04-02 06:46:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585928131] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:32,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:32,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:32,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502259945] [2023-04-02 06:46:32,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:32,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:32,482 INFO L87 Difference]: Start difference. First operand 1543 states and 2327 transitions. Second operand has 6 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:33,371 INFO L93 Difference]: Finished difference Result 3002 states and 4566 transitions. [2023-04-02 06:46:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:33,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2023-04-02 06:46:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:33,375 INFO L225 Difference]: With dead ends: 3002 [2023-04-02 06:46:33,375 INFO L226 Difference]: Without dead ends: 1543 [2023-04-02 06:46:33,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:46:33,378 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 647 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:33,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 204 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-04-02 06:46:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-04-02 06:46:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.4983755685510072) internal successors, (2306), 1539 states have internal predecessors, (2306), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2309 transitions. [2023-04-02 06:46:33,676 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2309 transitions. Word has length 117 [2023-04-02 06:46:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:33,676 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2309 transitions. [2023-04-02 06:46:33,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2309 transitions. [2023-04-02 06:46:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-02 06:46:33,677 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:33,678 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 06:46:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:46:33,678 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:33,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash 679291718, now seen corresponding path program 1 times [2023-04-02 06:46:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:33,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469634450] [2023-04-02 06:46:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:33,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:33,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469634450] [2023-04-02 06:46:33,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469634450] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:33,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:33,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353460404] [2023-04-02 06:46:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:33,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:34,000 INFO L87 Difference]: Start difference. First operand 1543 states and 2309 transitions. Second operand has 6 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:34,895 INFO L93 Difference]: Finished difference Result 3014 states and 4544 transitions. [2023-04-02 06:46:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:34,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2023-04-02 06:46:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:34,900 INFO L225 Difference]: With dead ends: 3014 [2023-04-02 06:46:34,900 INFO L226 Difference]: Without dead ends: 1543 [2023-04-02 06:46:34,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:46:34,903 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 674 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:34,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 176 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-04-02 06:46:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-04-02 06:46:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.4866796621182585) internal successors, (2288), 1539 states have internal predecessors, (2288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2291 transitions. [2023-04-02 06:46:35,233 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2291 transitions. Word has length 118 [2023-04-02 06:46:35,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:35,233 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2291 transitions. [2023-04-02 06:46:35,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2291 transitions. [2023-04-02 06:46:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-02 06:46:35,234 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:35,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:35,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:46:35,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:35,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash 424350438, now seen corresponding path program 1 times [2023-04-02 06:46:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:35,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841313561] [2023-04-02 06:46:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:35,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841313561] [2023-04-02 06:46:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841313561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:35,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:35,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712074239] [2023-04-02 06:46:35,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:35,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:35,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:35,530 INFO L87 Difference]: Start difference. First operand 1543 states and 2291 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:36,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:36,418 INFO L93 Difference]: Finished difference Result 3010 states and 4504 transitions. [2023-04-02 06:46:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:36,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2023-04-02 06:46:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:36,427 INFO L225 Difference]: With dead ends: 3010 [2023-04-02 06:46:36,427 INFO L226 Difference]: Without dead ends: 1543 [2023-04-02 06:46:36,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:46:36,430 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 656 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:36,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 184 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-04-02 06:46:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-04-02 06:46:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.47498375568551) internal successors, (2270), 1539 states have internal predecessors, (2270), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2273 transitions. [2023-04-02 06:46:36,748 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2273 transitions. Word has length 119 [2023-04-02 06:46:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:36,748 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2273 transitions. [2023-04-02 06:46:36,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2273 transitions. [2023-04-02 06:46:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 06:46:36,749 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:36,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:36,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:46:36,750 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:36,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:36,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1085461963, now seen corresponding path program 1 times [2023-04-02 06:46:36,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:36,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403072023] [2023-04-02 06:46:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:36,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:37,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:37,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403072023] [2023-04-02 06:46:37,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403072023] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:37,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:37,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288257662] [2023-04-02 06:46:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:37,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:37,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:37,050 INFO L87 Difference]: Start difference. First operand 1543 states and 2273 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:37,963 INFO L93 Difference]: Finished difference Result 3026 states and 4485 transitions. [2023-04-02 06:46:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:37,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2023-04-02 06:46:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:37,967 INFO L225 Difference]: With dead ends: 3026 [2023-04-02 06:46:37,968 INFO L226 Difference]: Without dead ends: 1543 [2023-04-02 06:46:37,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:46:37,970 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 697 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:37,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 152 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-04-02 06:46:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-04-02 06:46:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.4632878492527615) internal successors, (2252), 1539 states have internal predecessors, (2252), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2255 transitions. [2023-04-02 06:46:38,357 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2255 transitions. Word has length 120 [2023-04-02 06:46:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:38,357 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2255 transitions. [2023-04-02 06:46:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2255 transitions. [2023-04-02 06:46:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:46:38,359 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:38,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:46:38,360 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:38,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1202024706, now seen corresponding path program 1 times [2023-04-02 06:46:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478503865] [2023-04-02 06:46:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:38,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:38,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478503865] [2023-04-02 06:46:38,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478503865] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:38,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:38,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:46:38,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267640857] [2023-04-02 06:46:38,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:38,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:38,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:38,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:38,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:38,837 INFO L87 Difference]: Start difference. First operand 1543 states and 2255 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:39,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:39,943 INFO L93 Difference]: Finished difference Result 1895 states and 2755 transitions. [2023-04-02 06:46:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-02 06:46:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:39,948 INFO L225 Difference]: With dead ends: 1895 [2023-04-02 06:46:39,948 INFO L226 Difference]: Without dead ends: 1893 [2023-04-02 06:46:39,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:46:39,949 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 224 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:39,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1052 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:46:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-04-02 06:46:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1543. [2023-04-02 06:46:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.4574398960363872) internal successors, (2243), 1539 states have internal predecessors, (2243), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:40,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2246 transitions. [2023-04-02 06:46:40,303 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2246 transitions. Word has length 121 [2023-04-02 06:46:40,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:40,304 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2246 transitions. [2023-04-02 06:46:40,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2246 transitions. [2023-04-02 06:46:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 06:46:40,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:40,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:40,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:46:40,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:40,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash -308517048, now seen corresponding path program 1 times [2023-04-02 06:46:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:40,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957195359] [2023-04-02 06:46:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:40,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:40,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:40,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957195359] [2023-04-02 06:46:40,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957195359] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:40,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:40,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:46:40,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595605836] [2023-04-02 06:46:40,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:40,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:46:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:46:40,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:46:40,996 INFO L87 Difference]: Start difference. First operand 1543 states and 2246 transitions. Second operand has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:43,097 INFO L93 Difference]: Finished difference Result 4316 states and 6326 transitions. [2023-04-02 06:46:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:46:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2023-04-02 06:46:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:43,102 INFO L225 Difference]: With dead ends: 4316 [2023-04-02 06:46:43,102 INFO L226 Difference]: Without dead ends: 2959 [2023-04-02 06:46:43,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:46:43,104 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1266 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:43,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 762 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:46:43,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2023-04-02 06:46:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1543. [2023-04-02 06:46:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.4535412605588045) internal successors, (2237), 1539 states have internal predecessors, (2237), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2240 transitions. [2023-04-02 06:46:43,568 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2240 transitions. Word has length 122 [2023-04-02 06:46:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:43,569 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2240 transitions. [2023-04-02 06:46:43,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:43,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2240 transitions. [2023-04-02 06:46:43,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 06:46:43,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:43,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:43,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:46:43,571 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:43,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1529373790, now seen corresponding path program 1 times [2023-04-02 06:46:43,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:43,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251039029] [2023-04-02 06:46:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:43,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251039029] [2023-04-02 06:46:44,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251039029] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:44,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:44,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:46:44,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551191124] [2023-04-02 06:46:44,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:44,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:46:44,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:46:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:46:44,222 INFO L87 Difference]: Start difference. First operand 1543 states and 2240 transitions. Second operand has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:46,123 INFO L93 Difference]: Finished difference Result 4391 states and 6430 transitions. [2023-04-02 06:46:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:46:46,124 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2023-04-02 06:46:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:46,130 INFO L225 Difference]: With dead ends: 4391 [2023-04-02 06:46:46,130 INFO L226 Difference]: Without dead ends: 2989 [2023-04-02 06:46:46,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:46:46,135 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1391 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:46,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 677 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:46:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2023-04-02 06:46:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1543. [2023-04-02 06:46:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1539 states have (on average 1.450942170240416) internal successors, (2233), 1539 states have internal predecessors, (2233), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2236 transitions. [2023-04-02 06:46:46,625 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2236 transitions. Word has length 122 [2023-04-02 06:46:46,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:46,626 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2236 transitions. [2023-04-02 06:46:46,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:46,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2236 transitions. [2023-04-02 06:46:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 06:46:46,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:46,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:46,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:46:46,627 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:46,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 816581039, now seen corresponding path program 1 times [2023-04-02 06:46:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346976108] [2023-04-02 06:46:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:47,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:47,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346976108] [2023-04-02 06:46:47,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346976108] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:47,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:47,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:46:47,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087954777] [2023-04-02 06:46:47,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:47,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:46:47,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:46:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:46:47,250 INFO L87 Difference]: Start difference. First operand 1543 states and 2236 transitions. Second operand has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:50,409 INFO L93 Difference]: Finished difference Result 6746 states and 9826 transitions. [2023-04-02 06:46:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 06:46:50,410 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2023-04-02 06:46:50,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:50,420 INFO L225 Difference]: With dead ends: 6746 [2023-04-02 06:46:50,421 INFO L226 Difference]: Without dead ends: 5426 [2023-04-02 06:46:50,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:46:50,425 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1942 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:50,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1942 Valid, 752 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:46:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2023-04-02 06:46:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 1567. [2023-04-02 06:46:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1563 states have (on average 1.4491362763915547) internal successors, (2265), 1563 states have internal predecessors, (2265), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2268 transitions. [2023-04-02 06:46:50,949 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2268 transitions. Word has length 122 [2023-04-02 06:46:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:50,949 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2268 transitions. [2023-04-02 06:46:50,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2268 transitions. [2023-04-02 06:46:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:46:50,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:50,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:50,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:46:50,950 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:50,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash 730843574, now seen corresponding path program 1 times [2023-04-02 06:46:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883078607] [2023-04-02 06:46:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:51,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:51,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883078607] [2023-04-02 06:46:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883078607] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:46:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228022203] [2023-04-02 06:46:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:51,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:46:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:46:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:46:51,552 INFO L87 Difference]: Start difference. First operand 1567 states and 2268 transitions. Second operand has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:54,002 INFO L93 Difference]: Finished difference Result 4427 states and 6466 transitions. [2023-04-02 06:46:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:46:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-02 06:46:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:54,010 INFO L225 Difference]: With dead ends: 4427 [2023-04-02 06:46:54,010 INFO L226 Difference]: Without dead ends: 3024 [2023-04-02 06:46:54,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:46:54,013 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 875 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:54,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1196 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:46:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2023-04-02 06:46:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 1567. [2023-04-02 06:46:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1563 states have (on average 1.4459373000639795) internal successors, (2260), 1563 states have internal predecessors, (2260), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2263 transitions. [2023-04-02 06:46:54,633 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2263 transitions. Word has length 123 [2023-04-02 06:46:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:54,633 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2263 transitions. [2023-04-02 06:46:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:54,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2263 transitions. [2023-04-02 06:46:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 06:46:54,635 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:54,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:54,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:46:54,635 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:54,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1875499085, now seen corresponding path program 1 times [2023-04-02 06:46:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:54,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298419803] [2023-04-02 06:46:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:55,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298419803] [2023-04-02 06:46:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298419803] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:55,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:46:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153324552] [2023-04-02 06:46:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:55,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:55,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:55,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:55,105 INFO L87 Difference]: Start difference. First operand 1567 states and 2263 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:57,025 INFO L93 Difference]: Finished difference Result 4325 states and 6327 transitions. [2023-04-02 06:46:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:46:57,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2023-04-02 06:46:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:57,032 INFO L225 Difference]: With dead ends: 4325 [2023-04-02 06:46:57,032 INFO L226 Difference]: Without dead ends: 2887 [2023-04-02 06:46:57,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:46:57,035 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1046 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:57,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 582 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:46:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2023-04-02 06:46:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1567. [2023-04-02 06:46:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1563 states have (on average 1.4452975047984644) internal successors, (2259), 1563 states have internal predecessors, (2259), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2262 transitions. [2023-04-02 06:46:57,735 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2262 transitions. Word has length 124 [2023-04-02 06:46:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:57,735 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2262 transitions. [2023-04-02 06:46:57,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2262 transitions. [2023-04-02 06:46:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 06:46:57,736 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:57,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:57,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:46:57,737 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:57,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1370138229, now seen corresponding path program 1 times [2023-04-02 06:46:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:57,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639168222] [2023-04-02 06:46:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:46:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639168222] [2023-04-02 06:46:58,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639168222] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:58,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:58,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:46:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880790929] [2023-04-02 06:46:58,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:58,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:46:58,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:46:58,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:46:58,399 INFO L87 Difference]: Start difference. First operand 1567 states and 2262 transitions. Second operand has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:02,472 INFO L93 Difference]: Finished difference Result 7205 states and 10489 transitions. [2023-04-02 06:47:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:47:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2023-04-02 06:47:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:02,479 INFO L225 Difference]: With dead ends: 7205 [2023-04-02 06:47:02,479 INFO L226 Difference]: Without dead ends: 5861 [2023-04-02 06:47:02,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:47:02,481 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 1508 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:02,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1518 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:47:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2023-04-02 06:47:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 1640. [2023-04-02 06:47:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1636 states have (on average 1.438875305623472) internal successors, (2354), 1636 states have internal predecessors, (2354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2357 transitions. [2023-04-02 06:47:03,190 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2357 transitions. Word has length 125 [2023-04-02 06:47:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:03,190 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 2357 transitions. [2023-04-02 06:47:03,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2357 transitions. [2023-04-02 06:47:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 06:47:03,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:03,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:47:03,192 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:03,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash -807323614, now seen corresponding path program 1 times [2023-04-02 06:47:03,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:03,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437380727] [2023-04-02 06:47:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:03,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:47:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:03,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437380727] [2023-04-02 06:47:03,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437380727] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:03,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:03,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:47:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814799439] [2023-04-02 06:47:03,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:03,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:47:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:47:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:47:03,676 INFO L87 Difference]: Start difference. First operand 1640 states and 2357 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:05,837 INFO L93 Difference]: Finished difference Result 4415 states and 6420 transitions. [2023-04-02 06:47:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:47:05,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-02 06:47:05,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:05,841 INFO L225 Difference]: With dead ends: 4415 [2023-04-02 06:47:05,841 INFO L226 Difference]: Without dead ends: 3067 [2023-04-02 06:47:05,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:47:05,843 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1393 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:05,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 566 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:47:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2023-04-02 06:47:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 1567. [2023-04-02 06:47:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1563 states have (on average 1.4408189379398593) internal successors, (2252), 1563 states have internal predecessors, (2252), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2255 transitions. [2023-04-02 06:47:06,546 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2255 transitions. Word has length 126 [2023-04-02 06:47:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:06,546 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2255 transitions. [2023-04-02 06:47:06,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2255 transitions. [2023-04-02 06:47:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 06:47:06,547 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:06,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:06,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:47:06,547 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:06,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:06,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1786026867, now seen corresponding path program 1 times [2023-04-02 06:47:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599221471] [2023-04-02 06:47:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:06,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:47:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599221471] [2023-04-02 06:47:07,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599221471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:07,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:07,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:47:07,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701814980] [2023-04-02 06:47:07,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:07,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:47:07,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:47:07,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:47:07,238 INFO L87 Difference]: Start difference. First operand 1567 states and 2255 transitions. Second operand has 13 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:11,556 INFO L93 Difference]: Finished difference Result 6410 states and 9357 transitions. [2023-04-02 06:47:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:47:11,557 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-02 06:47:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:11,562 INFO L225 Difference]: With dead ends: 6410 [2023-04-02 06:47:11,562 INFO L226 Difference]: Without dead ends: 4977 [2023-04-02 06:47:11,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:47:11,564 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 1613 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:11,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 1205 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:47:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2023-04-02 06:47:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 1567. [2023-04-02 06:47:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1563 states have (on average 1.4395393474088292) internal successors, (2250), 1563 states have internal predecessors, (2250), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2253 transitions. [2023-04-02 06:47:12,345 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2253 transitions. Word has length 126 [2023-04-02 06:47:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:12,345 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2253 transitions. [2023-04-02 06:47:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2253 transitions. [2023-04-02 06:47:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:47:12,347 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:12,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:12,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:47:12,347 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:12,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1518642986, now seen corresponding path program 1 times [2023-04-02 06:47:12,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992884165] [2023-04-02 06:47:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:12,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:13,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:47:13,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992884165] [2023-04-02 06:47:13,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992884165] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:13,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:47:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039655946] [2023-04-02 06:47:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:47:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:47:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:47:13,125 INFO L87 Difference]: Start difference. First operand 1567 states and 2253 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:18,497 INFO L93 Difference]: Finished difference Result 6144 states and 8972 transitions. [2023-04-02 06:47:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:47:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:47:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:18,503 INFO L225 Difference]: With dead ends: 6144 [2023-04-02 06:47:18,504 INFO L226 Difference]: Without dead ends: 5784 [2023-04-02 06:47:18,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:47:18,505 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1408 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:18,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 3130 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:47:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2023-04-02 06:47:19,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 1538. [2023-04-02 06:47:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1534 states have (on average 1.439374185136897) internal successors, (2208), 1534 states have internal predecessors, (2208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2211 transitions. [2023-04-02 06:47:19,341 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2211 transitions. Word has length 127 [2023-04-02 06:47:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:19,341 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 2211 transitions. [2023-04-02 06:47:19,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2211 transitions. [2023-04-02 06:47:19,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:47:19,342 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:19,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:47:19,342 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:19,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash 375395093, now seen corresponding path program 1 times [2023-04-02 06:47:19,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:19,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076481990] [2023-04-02 06:47:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:47:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076481990] [2023-04-02 06:47:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076481990] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:20,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:20,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:47:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454279590] [2023-04-02 06:47:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:47:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:47:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:47:20,127 INFO L87 Difference]: Start difference. First operand 1538 states and 2211 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:25,743 INFO L93 Difference]: Finished difference Result 6003 states and 8775 transitions. [2023-04-02 06:47:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:47:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:47:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:25,751 INFO L225 Difference]: With dead ends: 6003 [2023-04-02 06:47:25,751 INFO L226 Difference]: Without dead ends: 5663 [2023-04-02 06:47:25,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:47:25,753 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1337 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:25,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 3498 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:47:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2023-04-02 06:47:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 1524. [2023-04-02 06:47:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1520 states have (on average 1.4375) internal successors, (2185), 1520 states have internal predecessors, (2185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2188 transitions. [2023-04-02 06:47:26,699 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2188 transitions. Word has length 127 [2023-04-02 06:47:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:26,700 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 2188 transitions. [2023-04-02 06:47:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2188 transitions. [2023-04-02 06:47:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:47:26,701 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:26,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:47:26,701 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:26,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1404161496, now seen corresponding path program 1 times [2023-04-02 06:47:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007127333] [2023-04-02 06:47:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:26,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:47:27,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:27,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007127333] [2023-04-02 06:47:27,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007127333] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:27,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:27,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:47:27,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728213764] [2023-04-02 06:47:27,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:27,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:47:27,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:27,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:47:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:47:27,474 INFO L87 Difference]: Start difference. First operand 1524 states and 2188 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:34,116 INFO L93 Difference]: Finished difference Result 7103 states and 10365 transitions. [2023-04-02 06:47:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:47:34,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:47:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:34,128 INFO L225 Difference]: With dead ends: 7103 [2023-04-02 06:47:34,128 INFO L226 Difference]: Without dead ends: 6791 [2023-04-02 06:47:34,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:47:34,130 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 2669 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:34,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2669 Valid, 2165 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:47:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2023-04-02 06:47:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 1536. [2023-04-02 06:47:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1532 states have (on average 1.4379895561357703) internal successors, (2203), 1532 states have internal predecessors, (2203), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2206 transitions. [2023-04-02 06:47:35,219 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2206 transitions. Word has length 127 [2023-04-02 06:47:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:35,220 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2206 transitions. [2023-04-02 06:47:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2206 transitions. [2023-04-02 06:47:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:47:35,221 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:35,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:35,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:47:35,222 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:35,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash 73284533, now seen corresponding path program 1 times [2023-04-02 06:47:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:35,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776990337] [2023-04-02 06:47:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:35,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:47:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776990337] [2023-04-02 06:47:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776990337] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:38,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2023-04-02 06:47:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079222123] [2023-04-02 06:47:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:38,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-04-02 06:47:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-04-02 06:47:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1838, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 06:47:38,448 INFO L87 Difference]: Start difference. First operand 1536 states and 2206 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 44 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:48:05,764 INFO L93 Difference]: Finished difference Result 13255 states and 19419 transitions. [2023-04-02 06:48:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-02 06:48:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 44 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:48:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:48:05,782 INFO L225 Difference]: With dead ends: 13255 [2023-04-02 06:48:05,782 INFO L226 Difference]: Without dead ends: 12943 [2023-04-02 06:48:05,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1068, Invalid=6242, Unknown=0, NotChecked=0, Total=7310 [2023-04-02 06:48:05,787 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 3283 mSDsluCounter, 24707 mSDsCounter, 0 mSdLazyCounter, 18986 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 25789 SdHoareTripleChecker+Invalid, 19049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 18986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:48:05,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 25789 Invalid, 19049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 18986 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-04-02 06:48:05,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12943 states. [2023-04-02 06:48:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12943 to 1573. [2023-04-02 06:48:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1569 states have (on average 1.4346717654557042) internal successors, (2251), 1569 states have internal predecessors, (2251), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2254 transitions. [2023-04-02 06:48:07,156 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2254 transitions. Word has length 127 [2023-04-02 06:48:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:48:07,157 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2254 transitions. [2023-04-02 06:48:07,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 44 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2254 transitions. [2023-04-02 06:48:07,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:48:07,157 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:48:07,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:48:07,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:48:07,158 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:48:07,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:48:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1340384117, now seen corresponding path program 1 times [2023-04-02 06:48:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:48:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69146646] [2023-04-02 06:48:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:48:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:48:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:48:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:48:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:48:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69146646] [2023-04-02 06:48:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69146646] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:48:07,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:48:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:48:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406418777] [2023-04-02 06:48:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:48:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:48:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:48:07,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:48:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:48:07,448 INFO L87 Difference]: Start difference. First operand 1573 states and 2254 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:48:10,650 INFO L93 Difference]: Finished difference Result 4145 states and 6065 transitions. [2023-04-02 06:48:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:48:10,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:48:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:48:10,653 INFO L225 Difference]: With dead ends: 4145 [2023-04-02 06:48:10,653 INFO L226 Difference]: Without dead ends: 2825 [2023-04-02 06:48:10,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:48:10,655 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 124 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:48:10,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 547 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:48:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2023-04-02 06:48:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2755. [2023-04-02 06:48:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2751 states have (on average 1.4427480916030535) internal successors, (3969), 2751 states have internal predecessors, (3969), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3972 transitions. [2023-04-02 06:48:13,162 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3972 transitions. Word has length 127 [2023-04-02 06:48:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:48:13,162 INFO L495 AbstractCegarLoop]: Abstraction has 2755 states and 3972 transitions. [2023-04-02 06:48:13,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3972 transitions. [2023-04-02 06:48:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:48:13,163 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:48:13,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:48:13,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:48:13,164 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:48:13,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:48:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash -163259914, now seen corresponding path program 1 times [2023-04-02 06:48:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:48:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620025476] [2023-04-02 06:48:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:48:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:48:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:48:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:48:16,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:48:16,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620025476] [2023-04-02 06:48:16,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620025476] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:48:16,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:48:16,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2023-04-02 06:48:16,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356525438] [2023-04-02 06:48:16,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:48:16,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-04-02 06:48:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:48:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-04-02 06:48:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1799, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 06:48:16,121 INFO L87 Difference]: Start difference. First operand 2755 states and 3972 transitions. Second operand has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 43 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:48:54,856 INFO L93 Difference]: Finished difference Result 26416 states and 38603 transitions. [2023-04-02 06:48:54,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-04-02 06:48:54,857 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 43 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:48:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:48:54,892 INFO L225 Difference]: With dead ends: 26416 [2023-04-02 06:48:54,892 INFO L226 Difference]: Without dead ends: 23914 [2023-04-02 06:48:54,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1000, Invalid=6140, Unknown=0, NotChecked=0, Total=7140 [2023-04-02 06:48:54,902 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 3251 mSDsluCounter, 26564 mSDsCounter, 0 mSdLazyCounter, 19715 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 27629 SdHoareTripleChecker+Invalid, 19775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 19715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:48:54,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3251 Valid, 27629 Invalid, 19775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 19715 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-04-02 06:48:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23914 states. [2023-04-02 06:48:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23914 to 2788. [2023-04-02 06:48:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2784 states have (on average 1.4396551724137931) internal successors, (4008), 2784 states have internal predecessors, (4008), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 4011 transitions. [2023-04-02 06:48:57,616 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 4011 transitions. Word has length 127 [2023-04-02 06:48:57,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:48:57,616 INFO L495 AbstractCegarLoop]: Abstraction has 2788 states and 4011 transitions. [2023-04-02 06:48:57,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 43 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:48:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 4011 transitions. [2023-04-02 06:48:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:48:57,618 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:48:57,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:48:57,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:48:57,618 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:48:57,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:48:57,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1660596727, now seen corresponding path program 1 times [2023-04-02 06:48:57,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:48:57,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682778409] [2023-04-02 06:48:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:48:57,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:48:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:48:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:48:58,745 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 06:48:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:48:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682778409] [2023-04-02 06:48:58,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682778409] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:48:58,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:48:58,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-02 06:48:58,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296792818] [2023-04-02 06:48:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:48:58,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 06:48:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:48:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 06:48:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:48:58,747 INFO L87 Difference]: Start difference. First operand 2788 states and 4011 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:49:15,431 INFO L93 Difference]: Finished difference Result 13554 states and 19764 transitions. [2023-04-02 06:49:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-02 06:49:15,431 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:49:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:49:15,445 INFO L225 Difference]: With dead ends: 13554 [2023-04-02 06:49:15,445 INFO L226 Difference]: Without dead ends: 12909 [2023-04-02 06:49:15,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=409, Invalid=1661, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 06:49:15,448 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 2085 mSDsluCounter, 6491 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 7107 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:49:15,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 7107 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:49:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12909 states. [2023-04-02 06:49:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12909 to 2765. [2023-04-02 06:49:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2765 states, 2761 states have (on average 1.440420137631293) internal successors, (3977), 2761 states have internal predecessors, (3977), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 3980 transitions. [2023-04-02 06:49:18,362 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 3980 transitions. Word has length 127 [2023-04-02 06:49:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:49:18,363 INFO L495 AbstractCegarLoop]: Abstraction has 2765 states and 3980 transitions. [2023-04-02 06:49:18,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 3980 transitions. [2023-04-02 06:49:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:49:18,364 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:49:18,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:49:18,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-02 06:49:18,364 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:49:18,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:49:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1823911480, now seen corresponding path program 1 times [2023-04-02 06:49:18,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:49:18,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689863560] [2023-04-02 06:49:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:49:18,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:49:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:49:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:49:18,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:49:18,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689863560] [2023-04-02 06:49:18,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689863560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:49:18,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:49:18,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:49:18,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814835381] [2023-04-02 06:49:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:49:18,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:49:18,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:49:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:49:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:49:18,989 INFO L87 Difference]: Start difference. First operand 2765 states and 3980 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:49:32,468 INFO L93 Difference]: Finished difference Result 10948 states and 15979 transitions. [2023-04-02 06:49:32,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:49:32,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:49:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:49:32,480 INFO L225 Difference]: With dead ends: 10948 [2023-04-02 06:49:32,480 INFO L226 Difference]: Without dead ends: 10306 [2023-04-02 06:49:32,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:49:32,483 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1298 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:49:32,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 1964 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:49:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2023-04-02 06:49:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 2724. [2023-04-02 06:49:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2720 states have (on average 1.4426470588235294) internal successors, (3924), 2720 states have internal predecessors, (3924), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3927 transitions. [2023-04-02 06:49:35,570 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3927 transitions. Word has length 127 [2023-04-02 06:49:35,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:49:35,570 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 3927 transitions. [2023-04-02 06:49:35,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3927 transitions. [2023-04-02 06:49:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:49:35,571 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:49:35,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:49:35,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-02 06:49:35,571 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:49:35,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:49:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 769363422, now seen corresponding path program 1 times [2023-04-02 06:49:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:49:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341831111] [2023-04-02 06:49:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:49:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:49:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:49:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:49:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:49:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341831111] [2023-04-02 06:49:36,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341831111] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:49:36,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:49:36,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:49:36,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058192692] [2023-04-02 06:49:36,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:49:36,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:49:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:49:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:49:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:49:36,237 INFO L87 Difference]: Start difference. First operand 2724 states and 3927 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:49:50,453 INFO L93 Difference]: Finished difference Result 10884 states and 15893 transitions. [2023-04-02 06:49:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:49:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-04-02 06:49:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:49:50,467 INFO L225 Difference]: With dead ends: 10884 [2023-04-02 06:49:50,467 INFO L226 Difference]: Without dead ends: 10272 [2023-04-02 06:49:50,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:49:50,470 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 1791 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:49:50,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 2383 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:49:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2023-04-02 06:49:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 2706. [2023-04-02 06:49:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2702 states have (on average 1.4430051813471503) internal successors, (3899), 2702 states have internal predecessors, (3899), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3902 transitions. [2023-04-02 06:49:53,730 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3902 transitions. Word has length 128 [2023-04-02 06:49:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:49:53,730 INFO L495 AbstractCegarLoop]: Abstraction has 2706 states and 3902 transitions. [2023-04-02 06:49:53,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:49:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3902 transitions. [2023-04-02 06:49:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:49:53,731 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:49:53,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:49:53,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-02 06:49:53,731 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:49:53,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:49:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1630254269, now seen corresponding path program 1 times [2023-04-02 06:49:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:49:53,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981830369] [2023-04-02 06:49:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:49:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:49:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat