/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/systemc/kundu2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 04:43:10,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 04:43:10,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 04:43:10,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 04:43:10,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 04:43:10,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 04:43:10,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 04:43:10,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 04:43:10,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 04:43:10,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 04:43:10,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 04:43:10,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 04:43:10,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 04:43:10,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 04:43:10,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 04:43:10,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 04:43:10,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 04:43:10,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 04:43:10,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 04:43:10,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 04:43:10,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 04:43:10,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 04:43:10,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 04:43:10,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 04:43:10,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 04:43:10,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 04:43:10,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 04:43:10,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 04:43:10,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 04:43:10,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 04:43:10,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 04:43:10,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 04:43:10,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 04:43:10,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 04:43:10,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 04:43:10,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 04:43:10,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 04:43:10,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 04:43:10,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 04:43:10,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 04:43:10,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 04:43:10,181 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 04:43:10,196 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 04:43:10,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 04:43:10,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 04:43:10,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 04:43:10,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 04:43:10,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 04:43:10,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 04:43:10,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 04:43:10,197 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 04:43:10,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 04:43:10,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 04:43:10,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 04:43:10,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 04:43:10,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 04:43:10,200 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 04:43:10,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 04:43:10,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 04:43:10,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 04:43:10,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 04:43:10,401 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 04:43:10,415 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 04:43:10,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/kundu2.cil.c [2023-04-02 04:43:11,304 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 04:43:11,465 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 04:43:11,465 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/kundu2.cil.c [2023-04-02 04:43:11,474 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9f99d35/08a2ea7242984b92b7b8a96d74cd6e8d/FLAG11db07170 [2023-04-02 04:43:11,486 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9f99d35/08a2ea7242984b92b7b8a96d74cd6e8d [2023-04-02 04:43:11,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 04:43:11,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 04:43:11,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 04:43:11,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 04:43:11,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 04:43:11,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b2cc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11, skipping insertion in model container [2023-04-02 04:43:11,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 04:43:11,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 04:43:11,605 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/systemc/kundu2.cil.c[636,649] [2023-04-02 04:43:11,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 04:43:11,657 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 04:43:11,663 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/systemc/kundu2.cil.c[636,649] [2023-04-02 04:43:11,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 04:43:11,693 INFO L208 MainTranslator]: Completed translation [2023-04-02 04:43:11,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11 WrapperNode [2023-04-02 04:43:11,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 04:43:11,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 04:43:11,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 04:43:11,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 04:43:11,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 04:43:11,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 04:43:11,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 04:43:11,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 04:43:11,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (1/1) ... [2023-04-02 04:43:11,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 04:43:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:43:11,746 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 04:43:11,753 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 04:43:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 04:43:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 04:43:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 04:43:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-02 04:43:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure read_data [2023-04-02 04:43:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2023-04-02 04:43:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P_1 [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_1_triggered [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P_2 [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure is_P_2_triggered [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure C_1 [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure is_C_1_triggered [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-02 04:43:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-02 04:43:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-02 04:43:11,782 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-02 04:43:11,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure read_data [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure P_1 [2023-04-02 04:43:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_1_triggered [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure P_2 [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure is_P_2_triggered [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure C_1 [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure is_C_1_triggered [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-02 04:43:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-02 04:43:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-02 04:43:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-02 04:43:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-02 04:43:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 04:43:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 04:43:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 04:43:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 04:43:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 04:43:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 04:43:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 04:43:11,857 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 04:43:11,861 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 04:43:12,139 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 04:43:12,149 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 04:43:12,149 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-02 04:43:12,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 04:43:12 BoogieIcfgContainer [2023-04-02 04:43:12,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 04:43:12,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 04:43:12,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 04:43:12,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 04:43:12,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 04:43:11" (1/3) ... [2023-04-02 04:43:12,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220c63ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 04:43:12, skipping insertion in model container [2023-04-02 04:43:12,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:43:11" (2/3) ... [2023-04-02 04:43:12,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220c63ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 04:43:12, skipping insertion in model container [2023-04-02 04:43:12,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 04:43:12" (3/3) ... [2023-04-02 04:43:12,156 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2023-04-02 04:43:12,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 04:43:12,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 04:43:12,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 04:43:12,226 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;@29c8aaaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 04:43:12,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 04:43:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 128 states have internal predecessors, (175), 35 states have call successors, (35), 24 states have call predecessors, (35), 24 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 04:43:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 04:43:12,237 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:12,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:43:12,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:12,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1745390269, now seen corresponding path program 1 times [2023-04-02 04:43:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481691024] [2023-04-02 04:43:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 04:43:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 04:43:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:12,853 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 04:43:12,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:12,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481691024] [2023-04-02 04:43:12,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481691024] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:12,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:12,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:43:12,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734960220] [2023-04-02 04:43:12,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:12,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:43:12,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:43:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:12,901 INFO L87 Difference]: Start difference. First operand has 181 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 128 states have internal predecessors, (175), 35 states have call successors, (35), 24 states have call predecessors, (35), 24 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:13,922 INFO L93 Difference]: Finished difference Result 376 states and 536 transitions. [2023-04-02 04:43:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 04:43:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2023-04-02 04:43:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:13,933 INFO L225 Difference]: With dead ends: 376 [2023-04-02 04:43:13,933 INFO L226 Difference]: Without dead ends: 209 [2023-04-02 04:43:13,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-04-02 04:43:13,938 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 336 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:13,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 68 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 04:43:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-04-02 04:43:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 176. [2023-04-02 04:43:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 125 states have internal predecessors, (164), 35 states have call successors, (35), 24 states have call predecessors, (35), 22 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) [2023-04-02 04:43:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 230 transitions. [2023-04-02 04:43:13,998 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 230 transitions. Word has length 82 [2023-04-02 04:43:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:13,998 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 230 transitions. [2023-04-02 04:43:13,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 230 transitions. [2023-04-02 04:43:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 04:43:14,001 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:14,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:43:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 04:43:14,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:14,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -610414981, now seen corresponding path program 1 times [2023-04-02 04:43:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340924950] [2023-04-02 04:43:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 04:43:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 04:43:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:14,217 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 04:43:14,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:14,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340924950] [2023-04-02 04:43:14,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340924950] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:14,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:14,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:43:14,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478094470] [2023-04-02 04:43:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:14,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:43:14,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:14,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:43:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:14,220 INFO L87 Difference]: Start difference. First operand 176 states and 230 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:15,111 INFO L93 Difference]: Finished difference Result 371 states and 505 transitions. [2023-04-02 04:43:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 04:43:15,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2023-04-02 04:43:15,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:15,113 INFO L225 Difference]: With dead ends: 371 [2023-04-02 04:43:15,113 INFO L226 Difference]: Without dead ends: 216 [2023-04-02 04:43:15,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-04-02 04:43:15,115 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 332 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:15,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 39 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 04:43:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-04-02 04:43:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 181. [2023-04-02 04:43:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 129 states have internal predecessors, (168), 35 states have call successors, (35), 24 states have call predecessors, (35), 23 states have return successors, (32), 32 states have call predecessors, (32), 30 states have call successors, (32) [2023-04-02 04:43:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 235 transitions. [2023-04-02 04:43:15,140 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 235 transitions. Word has length 82 [2023-04-02 04:43:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:15,140 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 235 transitions. [2023-04-02 04:43:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 235 transitions. [2023-04-02 04:43:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 04:43:15,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:15,141 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] [2023-04-02 04:43:15,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 04:43:15,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:15,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1839185149, now seen corresponding path program 1 times [2023-04-02 04:43:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188422239] [2023-04-02 04:43:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:15,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 04:43:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 04:43:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:15,388 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 04:43:15,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:15,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188422239] [2023-04-02 04:43:15,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188422239] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:15,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:15,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:43:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785635782] [2023-04-02 04:43:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:15,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:43:15,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:43:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:15,398 INFO L87 Difference]: Start difference. First operand 181 states and 235 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 04:43:18,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:18,267 INFO L93 Difference]: Finished difference Result 1221 states and 1770 transitions. [2023-04-02 04:43:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 04:43:18,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 82 [2023-04-02 04:43:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:18,277 INFO L225 Difference]: With dead ends: 1221 [2023-04-02 04:43:18,277 INFO L226 Difference]: Without dead ends: 1061 [2023-04-02 04:43:18,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2023-04-02 04:43:18,284 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1780 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3071 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 3771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 3071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:18,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 17 Invalid, 3771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 3071 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 04:43:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-04-02 04:43:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 889. [2023-04-02 04:43:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 626 states have (on average 1.3722044728434504) internal successors, (859), 659 states have internal predecessors, (859), 147 states have call successors, (147), 107 states have call predecessors, (147), 115 states have return successors, (219), 145 states have call predecessors, (219), 142 states have call successors, (219) [2023-04-02 04:43:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1225 transitions. [2023-04-02 04:43:18,407 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1225 transitions. Word has length 82 [2023-04-02 04:43:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:18,407 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1225 transitions. [2023-04-02 04:43:18,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 04:43:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1225 transitions. [2023-04-02 04:43:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 04:43:18,411 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:18,411 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] [2023-04-02 04:43:18,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 04:43:18,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:18,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash 454143808, now seen corresponding path program 1 times [2023-04-02 04:43:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:18,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703052998] [2023-04-02 04:43:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:18,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:18,552 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 04:43:18,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:18,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703052998] [2023-04-02 04:43:18,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703052998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:18,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:18,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 04:43:18,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657557694] [2023-04-02 04:43:18,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:18,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 04:43:18,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 04:43:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 04:43:18,554 INFO L87 Difference]: Start difference. First operand 889 states and 1225 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 04:43:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:20,097 INFO L93 Difference]: Finished difference Result 2163 states and 3105 transitions. [2023-04-02 04:43:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 04:43:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 83 [2023-04-02 04:43:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:20,104 INFO L225 Difference]: With dead ends: 2163 [2023-04-02 04:43:20,104 INFO L226 Difference]: Without dead ends: 1295 [2023-04-02 04:43:20,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-04-02 04:43:20,115 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 651 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:20,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 15 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 04:43:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-04-02 04:43:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1125. [2023-04-02 04:43:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 794 states have (on average 1.3564231738035264) internal successors, (1077), 837 states have internal predecessors, (1077), 184 states have call successors, (184), 136 states have call predecessors, (184), 146 states have return successors, (264), 181 states have call predecessors, (264), 179 states have call successors, (264) [2023-04-02 04:43:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1525 transitions. [2023-04-02 04:43:20,221 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1525 transitions. Word has length 83 [2023-04-02 04:43:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:20,222 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1525 transitions. [2023-04-02 04:43:20,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 04:43:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1525 transitions. [2023-04-02 04:43:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 04:43:20,222 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:20,223 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] [2023-04-02 04:43:20,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 04:43:20,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:20,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1310672801, now seen corresponding path program 1 times [2023-04-02 04:43:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635174030] [2023-04-02 04:43:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:20,392 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 04:43:20,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635174030] [2023-04-02 04:43:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635174030] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:20,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:20,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:43:20,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383788277] [2023-04-02 04:43:20,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:20,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:43:20,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:20,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:43:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:20,393 INFO L87 Difference]: Start difference. First operand 1125 states and 1525 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:21,284 INFO L93 Difference]: Finished difference Result 2383 states and 3374 transitions. [2023-04-02 04:43:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 04:43:21,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2023-04-02 04:43:21,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:21,290 INFO L225 Difference]: With dead ends: 2383 [2023-04-02 04:43:21,290 INFO L226 Difference]: Without dead ends: 1279 [2023-04-02 04:43:21,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-04-02 04:43:21,294 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 330 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:21,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 39 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 04:43:21,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-04-02 04:43:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1145. [2023-04-02 04:43:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 810 states have (on average 1.345679012345679) internal successors, (1090), 853 states have internal predecessors, (1090), 184 states have call successors, (184), 136 states have call predecessors, (184), 150 states have return successors, (268), 185 states have call predecessors, (268), 179 states have call successors, (268) [2023-04-02 04:43:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1542 transitions. [2023-04-02 04:43:21,437 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1542 transitions. Word has length 83 [2023-04-02 04:43:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:21,438 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1542 transitions. [2023-04-02 04:43:21,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1542 transitions. [2023-04-02 04:43:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 04:43:21,442 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:21,442 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] [2023-04-02 04:43:21,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 04:43:21,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:21,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1288040547, now seen corresponding path program 1 times [2023-04-02 04:43:21,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:21,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960462304] [2023-04-02 04:43:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:21,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:21,589 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 04:43:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960462304] [2023-04-02 04:43:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960462304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 04:43:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144891640] [2023-04-02 04:43:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:21,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:43:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:43:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-02 04:43:21,591 INFO L87 Difference]: Start difference. First operand 1145 states and 1542 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:22,646 INFO L93 Difference]: Finished difference Result 2919 states and 4077 transitions. [2023-04-02 04:43:22,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 04:43:22,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2023-04-02 04:43:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:22,653 INFO L225 Difference]: With dead ends: 2919 [2023-04-02 04:43:22,653 INFO L226 Difference]: Without dead ends: 1796 [2023-04-02 04:43:22,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-04-02 04:43:22,657 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 870 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:22,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 26 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 04:43:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-04-02 04:43:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1602. [2023-04-02 04:43:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1137 states have (on average 1.3447669305189094) internal successors, (1529), 1201 states have internal predecessors, (1529), 253 states have call successors, (253), 190 states have call predecessors, (253), 211 states have return successors, (407), 251 states have call predecessors, (407), 248 states have call successors, (407) [2023-04-02 04:43:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2189 transitions. [2023-04-02 04:43:22,803 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2189 transitions. Word has length 83 [2023-04-02 04:43:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:22,803 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2189 transitions. [2023-04-02 04:43:22,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 04:43:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2189 transitions. [2023-04-02 04:43:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 04:43:22,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:22,804 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:43:22,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 04:43:22,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:22,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1487868538, now seen corresponding path program 1 times [2023-04-02 04:43:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172207219] [2023-04-02 04:43:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:43:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:43:23,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:23,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172207219] [2023-04-02 04:43:23,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172207219] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:43:23,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628078139] [2023-04-02 04:43:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:23,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:43:23,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:43:23,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 04:43:23,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 04:43:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:23,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 04:43:23,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:43:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:43:23,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:43:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628078139] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:23,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:43:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 15 [2023-04-02 04:43:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50100517] [2023-04-02 04:43:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:43:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:43:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 04:43:23,363 INFO L87 Difference]: Start difference. First operand 1602 states and 2189 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:43:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:24,634 INFO L93 Difference]: Finished difference Result 5218 states and 8238 transitions. [2023-04-02 04:43:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 04:43:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 96 [2023-04-02 04:43:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:24,650 INFO L225 Difference]: With dead ends: 5218 [2023-04-02 04:43:24,650 INFO L226 Difference]: Without dead ends: 3762 [2023-04-02 04:43:24,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2023-04-02 04:43:24,656 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 708 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:24,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1053 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 04:43:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2023-04-02 04:43:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3432. [2023-04-02 04:43:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 2412 states have (on average 1.373134328358209) internal successors, (3312), 2668 states have internal predecessors, (3312), 577 states have call successors, (577), 350 states have call predecessors, (577), 442 states have return successors, (1304), 577 states have call predecessors, (1304), 572 states have call successors, (1304) [2023-04-02 04:43:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 5193 transitions. [2023-04-02 04:43:25,027 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 5193 transitions. Word has length 96 [2023-04-02 04:43:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:25,028 INFO L495 AbstractCegarLoop]: Abstraction has 3432 states and 5193 transitions. [2023-04-02 04:43:25,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:43:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 5193 transitions. [2023-04-02 04:43:25,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 04:43:25,029 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:25,029 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] [2023-04-02 04:43:25,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 04:43:25,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:43:25,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:25,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash -901492307, now seen corresponding path program 1 times [2023-04-02 04:43:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582055811] [2023-04-02 04:43:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:25,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:43:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:25,391 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 04:43:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582055811] [2023-04-02 04:43:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582055811] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:25,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:43:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666311209] [2023-04-02 04:43:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:25,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:43:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:43:25,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:25,392 INFO L87 Difference]: Start difference. First operand 3432 states and 5193 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:43:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:27,942 INFO L93 Difference]: Finished difference Result 13951 states and 29232 transitions. [2023-04-02 04:43:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 04:43:27,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 101 [2023-04-02 04:43:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:28,006 INFO L225 Difference]: With dead ends: 13951 [2023-04-02 04:43:28,006 INFO L226 Difference]: Without dead ends: 10541 [2023-04-02 04:43:28,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=568, Unknown=0, NotChecked=0, Total=812 [2023-04-02 04:43:28,041 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 763 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:28,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 17 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 04:43:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2023-04-02 04:43:29,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 7678. [2023-04-02 04:43:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 5432 states have (on average 1.3895434462444771) internal successors, (7548), 6121 states have internal predecessors, (7548), 1321 states have call successors, (1321), 645 states have call predecessors, (1321), 924 states have return successors, (4823), 1358 states have call predecessors, (4823), 1316 states have call successors, (4823) [2023-04-02 04:43:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 13692 transitions. [2023-04-02 04:43:29,078 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 13692 transitions. Word has length 101 [2023-04-02 04:43:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:29,078 INFO L495 AbstractCegarLoop]: Abstraction has 7678 states and 13692 transitions. [2023-04-02 04:43:29,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:43:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 13692 transitions. [2023-04-02 04:43:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 04:43:29,081 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:29,081 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] [2023-04-02 04:43:29,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 04:43:29,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:29,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1514344043, now seen corresponding path program 1 times [2023-04-02 04:43:29,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:29,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412927967] [2023-04-02 04:43:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:43:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:29,182 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 04:43:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:29,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412927967] [2023-04-02 04:43:29,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412927967] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:29,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:29,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:43:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143931706] [2023-04-02 04:43:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:29,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:43:29,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:29,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:43:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:29,184 INFO L87 Difference]: Start difference. First operand 7678 states and 13692 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:43:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:31,046 INFO L93 Difference]: Finished difference Result 16858 states and 30490 transitions. [2023-04-02 04:43:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 04:43:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 101 [2023-04-02 04:43:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:31,093 INFO L225 Difference]: With dead ends: 16858 [2023-04-02 04:43:31,093 INFO L226 Difference]: Without dead ends: 9201 [2023-04-02 04:43:31,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-02 04:43:31,125 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 897 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:31,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 15 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 04:43:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9201 states. [2023-04-02 04:43:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9201 to 7672. [2023-04-02 04:43:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7672 states, 5430 states have (on average 1.3893186003683242) internal successors, (7544), 6118 states have internal predecessors, (7544), 1318 states have call successors, (1318), 645 states have call predecessors, (1318), 923 states have return successors, (4818), 1354 states have call predecessors, (4818), 1313 states have call successors, (4818) [2023-04-02 04:43:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 13680 transitions. [2023-04-02 04:43:32,065 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 13680 transitions. Word has length 101 [2023-04-02 04:43:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:32,065 INFO L495 AbstractCegarLoop]: Abstraction has 7672 states and 13680 transitions. [2023-04-02 04:43:32,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:43:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 13680 transitions. [2023-04-02 04:43:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 04:43:32,067 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:32,067 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] [2023-04-02 04:43:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 04:43:32,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:32,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:32,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1582000421, now seen corresponding path program 1 times [2023-04-02 04:43:32,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:32,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063441772] [2023-04-02 04:43:32,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:43:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:32,314 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 04:43:32,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:32,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063441772] [2023-04-02 04:43:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063441772] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:32,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:32,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 04:43:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066985697] [2023-04-02 04:43:32,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 04:43:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 04:43:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 04:43:32,316 INFO L87 Difference]: Start difference. First operand 7672 states and 13680 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-04-02 04:43:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:36,391 INFO L93 Difference]: Finished difference Result 19901 states and 41223 transitions. [2023-04-02 04:43:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-02 04:43:36,391 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2023-04-02 04:43:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:36,454 INFO L225 Difference]: With dead ends: 19901 [2023-04-02 04:43:36,454 INFO L226 Difference]: Without dead ends: 13458 [2023-04-02 04:43:36,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=419, Invalid=1561, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 04:43:36,513 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1646 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 3970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:36,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 44 Invalid, 3970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 04:43:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13458 states. [2023-04-02 04:43:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13458 to 11124. [2023-04-02 04:43:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11124 states, 7854 states have (on average 1.3813343519225871) internal successors, (10849), 8856 states have internal predecessors, (10849), 1911 states have call successors, (1911), 945 states have call predecessors, (1911), 1358 states have return successors, (8178), 1965 states have call predecessors, (8178), 1906 states have call successors, (8178) [2023-04-02 04:43:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11124 states to 11124 states and 20938 transitions. [2023-04-02 04:43:37,878 INFO L78 Accepts]: Start accepts. Automaton has 11124 states and 20938 transitions. Word has length 102 [2023-04-02 04:43:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:37,878 INFO L495 AbstractCegarLoop]: Abstraction has 11124 states and 20938 transitions. [2023-04-02 04:43:37,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-04-02 04:43:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 11124 states and 20938 transitions. [2023-04-02 04:43:37,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 04:43:37,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:37,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:43:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 04:43:37,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:37,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash -919026229, now seen corresponding path program 1 times [2023-04-02 04:43:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:37,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991081002] [2023-04-02 04:43:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 04:43:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 04:43:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 04:43:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991081002] [2023-04-02 04:43:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991081002] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:43:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842612823] [2023-04-02 04:43:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:38,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:43:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:43:38,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 04:43:38,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 04:43:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:38,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 04:43:38,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:43:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:43:38,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:43:38,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842612823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:38,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:43:38,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-02 04:43:38,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895402841] [2023-04-02 04:43:38,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:38,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 04:43:38,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 04:43:38,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:38,163 INFO L87 Difference]: Start difference. First operand 11124 states and 20938 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-04-02 04:43:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:40,404 INFO L93 Difference]: Finished difference Result 30790 states and 68678 transitions. [2023-04-02 04:43:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 04:43:40,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2023-04-02 04:43:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:40,494 INFO L225 Difference]: With dead ends: 30790 [2023-04-02 04:43:40,494 INFO L226 Difference]: Without dead ends: 19688 [2023-04-02 04:43:40,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:43:40,606 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 158 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:40,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 598 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 04:43:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19688 states. [2023-04-02 04:43:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19688 to 19497. [2023-04-02 04:43:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19497 states, 13761 states have (on average 1.3304992369740571) internal successors, (18309), 15251 states have internal predecessors, (18309), 3231 states have call successors, (3231), 1761 states have call predecessors, (3231), 2504 states have return successors, (15778), 3405 states have call predecessors, (15778), 3226 states have call successors, (15778) [2023-04-02 04:43:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19497 states to 19497 states and 37318 transitions. [2023-04-02 04:43:42,946 INFO L78 Accepts]: Start accepts. Automaton has 19497 states and 37318 transitions. Word has length 106 [2023-04-02 04:43:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:42,946 INFO L495 AbstractCegarLoop]: Abstraction has 19497 states and 37318 transitions. [2023-04-02 04:43:42,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-04-02 04:43:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19497 states and 37318 transitions. [2023-04-02 04:43:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-02 04:43:42,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:42,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:43:42,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 04:43:43,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 04:43:43,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:43,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1377912702, now seen corresponding path program 1 times [2023-04-02 04:43:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326281487] [2023-04-02 04:43:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:43:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 04:43:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 04:43:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326281487] [2023-04-02 04:43:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326281487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:43,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:43,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 04:43:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436805094] [2023-04-02 04:43:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 04:43:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 04:43:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-04-02 04:43:43,390 INFO L87 Difference]: Start difference. First operand 19497 states and 37318 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (20), 9 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2023-04-02 04:43:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:49,142 INFO L93 Difference]: Finished difference Result 46663 states and 94111 transitions. [2023-04-02 04:43:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 04:43:49,142 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (20), 9 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-04-02 04:43:49,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:49,266 INFO L225 Difference]: With dead ends: 46663 [2023-04-02 04:43:49,266 INFO L226 Difference]: Without dead ends: 29426 [2023-04-02 04:43:49,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=423, Invalid=1383, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 04:43:49,417 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 775 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 3484 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 3484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:49,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 47 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 3484 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 04:43:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29426 states. [2023-04-02 04:43:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29426 to 25526. [2023-04-02 04:43:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25526 states, 18157 states have (on average 1.3318279451451231) internal successors, (24182), 19946 states have internal predecessors, (24182), 4104 states have call successors, (4104), 2229 states have call predecessors, (4104), 3264 states have return successors, (13470), 4475 states have call predecessors, (13470), 4097 states have call successors, (13470) [2023-04-02 04:43:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25526 states to 25526 states and 41756 transitions. [2023-04-02 04:43:52,457 INFO L78 Accepts]: Start accepts. Automaton has 25526 states and 41756 transitions. Word has length 112 [2023-04-02 04:43:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:43:52,457 INFO L495 AbstractCegarLoop]: Abstraction has 25526 states and 41756 transitions. [2023-04-02 04:43:52,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (20), 9 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2023-04-02 04:43:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 25526 states and 41756 transitions. [2023-04-02 04:43:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 04:43:52,462 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:43:52,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:43:52,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 04:43:52,462 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:43:52,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:43:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1590031324, now seen corresponding path program 1 times [2023-04-02 04:43:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:43:52,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240634614] [2023-04-02 04:43:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:43:52,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:43:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:43:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:43:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:43:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:43:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:43:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:43:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:43:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:43:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:43:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:43:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:43:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:43:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 04:43:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:43:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:43:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 04:43:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:43:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240634614] [2023-04-02 04:43:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240634614] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:43:52,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:43:52,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 04:43:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871256400] [2023-04-02 04:43:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:43:52,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 04:43:52,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:43:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 04:43:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 04:43:52,704 INFO L87 Difference]: Start difference. First operand 25526 states and 41756 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (21), 10 states have call predecessors, (21), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2023-04-02 04:43:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:43:58,732 INFO L93 Difference]: Finished difference Result 48140 states and 82592 transitions. [2023-04-02 04:43:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 04:43:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (21), 10 states have call predecessors, (21), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2023-04-02 04:43:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:43:58,859 INFO L225 Difference]: With dead ends: 48140 [2023-04-02 04:43:58,859 INFO L226 Difference]: Without dead ends: 29304 [2023-04-02 04:43:58,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=438, Invalid=1542, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 04:43:58,948 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 877 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5143 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 5534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 5143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 04:43:58,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 57 Invalid, 5534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 5143 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 04:43:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29304 states. [2023-04-02 04:44:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29304 to 25474. [2023-04-02 04:44:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25474 states, 18127 states have (on average 1.331273790478292) internal successors, (24132), 19900 states have internal predecessors, (24132), 4094 states have call successors, (4094), 2223 states have call predecessors, (4094), 3252 states have return successors, (13330), 4475 states have call predecessors, (13330), 4087 states have call successors, (13330) [2023-04-02 04:44:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25474 states to 25474 states and 41556 transitions. [2023-04-02 04:44:02,101 INFO L78 Accepts]: Start accepts. Automaton has 25474 states and 41556 transitions. Word has length 116 [2023-04-02 04:44:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:44:02,101 INFO L495 AbstractCegarLoop]: Abstraction has 25474 states and 41556 transitions. [2023-04-02 04:44:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (21), 10 states have call predecessors, (21), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2023-04-02 04:44:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 25474 states and 41556 transitions. [2023-04-02 04:44:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 04:44:02,106 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:44:02,106 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:44:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 04:44:02,107 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:44:02,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:44:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1203331552, now seen corresponding path program 1 times [2023-04-02 04:44:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:44:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080254280] [2023-04-02 04:44:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:44:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:44:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:44:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:44:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:44:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:44:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:44:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:44:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:44:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:44:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:44:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:44:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:44:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:44:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 04:44:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 04:44:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 04:44:02,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:44:02,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080254280] [2023-04-02 04:44:02,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080254280] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:44:02,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:44:02,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 04:44:02,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24921645] [2023-04-02 04:44:02,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:44:02,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 04:44:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:44:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 04:44:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-04-02 04:44:02,261 INFO L87 Difference]: Start difference. First operand 25474 states and 41556 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (22), 9 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 04:44:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:44:07,395 INFO L93 Difference]: Finished difference Result 58826 states and 105538 transitions. [2023-04-02 04:44:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 04:44:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (22), 9 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 122 [2023-04-02 04:44:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:44:07,552 INFO L225 Difference]: With dead ends: 58826 [2023-04-02 04:44:07,553 INFO L226 Difference]: Without dead ends: 33379 [2023-04-02 04:44:07,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2023-04-02 04:44:07,702 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 957 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 04:44:07,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 15 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 04:44:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33379 states. [2023-04-02 04:44:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33379 to 27324. [2023-04-02 04:44:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27324 states, 19353 states have (on average 1.32604764119258) internal successors, (25663), 21702 states have internal predecessors, (25663), 4495 states have call successors, (4495), 2223 states have call predecessors, (4495), 3475 states have return successors, (14371), 4827 states have call predecessors, (14371), 4488 states have call successors, (14371) [2023-04-02 04:44:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27324 states to 27324 states and 44529 transitions. [2023-04-02 04:44:11,152 INFO L78 Accepts]: Start accepts. Automaton has 27324 states and 44529 transitions. Word has length 122 [2023-04-02 04:44:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:44:11,152 INFO L495 AbstractCegarLoop]: Abstraction has 27324 states and 44529 transitions. [2023-04-02 04:44:11,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (22), 9 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 04:44:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 27324 states and 44529 transitions. [2023-04-02 04:44:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 04:44:11,157 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:44:11,157 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:44:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 04:44:11,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:44:11,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:44:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash 185962462, now seen corresponding path program 1 times [2023-04-02 04:44:11,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:44:11,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403577194] [2023-04-02 04:44:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:44:11,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:44:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:44:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:44:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:44:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:44:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:44:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:44:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:44:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:44:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:44:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:44:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:44:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:44:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 04:44:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 04:44:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 04:44:11,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:44:11,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403577194] [2023-04-02 04:44:11,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403577194] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:44:11,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:44:11,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 04:44:11,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157280627] [2023-04-02 04:44:11,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:44:11,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 04:44:11,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:44:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 04:44:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-02 04:44:11,260 INFO L87 Difference]: Start difference. First operand 27324 states and 44529 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 04:44:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:44:15,708 INFO L93 Difference]: Finished difference Result 35889 states and 58544 transitions. [2023-04-02 04:44:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 04:44:15,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 122 [2023-04-02 04:44:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:44:15,822 INFO L225 Difference]: With dead ends: 35889 [2023-04-02 04:44:15,823 INFO L226 Difference]: Without dead ends: 32875 [2023-04-02 04:44:15,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 04:44:15,894 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 696 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 04:44:15,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 15 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 04:44:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32875 states. [2023-04-02 04:44:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32875 to 27319. [2023-04-02 04:44:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27319 states, 19352 states have (on average 1.3260128152128978) internal successors, (25661), 21700 states have internal predecessors, (25661), 4492 states have call successors, (4492), 2223 states have call predecessors, (4492), 3474 states have return successors, (14367), 4823 states have call predecessors, (14367), 4485 states have call successors, (14367) [2023-04-02 04:44:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27319 states to 27319 states and 44520 transitions. [2023-04-02 04:44:18,985 INFO L78 Accepts]: Start accepts. Automaton has 27319 states and 44520 transitions. Word has length 122 [2023-04-02 04:44:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:44:18,985 INFO L495 AbstractCegarLoop]: Abstraction has 27319 states and 44520 transitions. [2023-04-02 04:44:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 04:44:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 27319 states and 44520 transitions. [2023-04-02 04:44:18,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 04:44:18,989 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:44:18,989 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:44:18,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 04:44:18,990 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:44:18,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:44:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash -880922439, now seen corresponding path program 1 times [2023-04-02 04:44:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:44:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14511684] [2023-04-02 04:44:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:44:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:44:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:44:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:44:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:44:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:44:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:44:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:44:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:44:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:44:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:44:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:44:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:44:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:44:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 04:44:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 04:44:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 04:44:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:44:19,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14511684] [2023-04-02 04:44:19,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14511684] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:44:19,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:44:19,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 04:44:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756117341] [2023-04-02 04:44:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:44:19,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 04:44:19,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:44:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 04:44:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-04-02 04:44:19,159 INFO L87 Difference]: Start difference. First operand 27319 states and 44520 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (22), 9 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 04:44:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:44:30,229 INFO L93 Difference]: Finished difference Result 91341 states and 195366 transitions. [2023-04-02 04:44:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-02 04:44:30,229 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (22), 9 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 123 [2023-04-02 04:44:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:44:30,612 INFO L225 Difference]: With dead ends: 91341 [2023-04-02 04:44:30,612 INFO L226 Difference]: Without dead ends: 64044 [2023-04-02 04:44:30,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=640, Invalid=2666, Unknown=0, NotChecked=0, Total=3306 [2023-04-02 04:44:30,844 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3263 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 1785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1785 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 04:44:30,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3263 Valid, 20 Invalid, 4575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1785 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 04:44:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64044 states. [2023-04-02 04:44:38,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64044 to 56912. [2023-04-02 04:44:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56912 states, 40673 states have (on average 1.2555257787721585) internal successors, (51066), 45144 states have internal predecessors, (51066), 8906 states have call successors, (8906), 4287 states have call predecessors, (8906), 7332 states have return successors, (37809), 9923 states have call predecessors, (37809), 8899 states have call successors, (37809) [2023-04-02 04:44:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56912 states to 56912 states and 97781 transitions. [2023-04-02 04:44:39,018 INFO L78 Accepts]: Start accepts. Automaton has 56912 states and 97781 transitions. Word has length 123 [2023-04-02 04:44:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:44:39,019 INFO L495 AbstractCegarLoop]: Abstraction has 56912 states and 97781 transitions. [2023-04-02 04:44:39,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (22), 9 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 04:44:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 56912 states and 97781 transitions. [2023-04-02 04:44:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 04:44:39,024 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:44:39,024 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:44:39,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 04:44:39,024 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:44:39,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:44:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash -748771718, now seen corresponding path program 1 times [2023-04-02 04:44:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:44:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190770896] [2023-04-02 04:44:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:44:39,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:44:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:44:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:44:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:44:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:44:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:44:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:44:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:44:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:44:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:44:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:44:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:44:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:44:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 04:44:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 04:44:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 04:44:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:44:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190770896] [2023-04-02 04:44:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190770896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:44:39,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:44:39,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 04:44:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534277217] [2023-04-02 04:44:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:44:39,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 04:44:39,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:44:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 04:44:39,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-02 04:44:39,170 INFO L87 Difference]: Start difference. First operand 56912 states and 97781 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 9 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 04:44:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:44:49,211 INFO L93 Difference]: Finished difference Result 114455 states and 200533 transitions. [2023-04-02 04:44:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-02 04:44:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 9 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2023-04-02 04:44:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:44:49,461 INFO L225 Difference]: With dead ends: 114455 [2023-04-02 04:44:49,461 INFO L226 Difference]: Without dead ends: 57572 [2023-04-02 04:44:49,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=537, Invalid=2219, Unknown=0, NotChecked=0, Total=2756 [2023-04-02 04:44:49,768 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3254 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 1672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 4206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1672 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 04:44:49,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3254 Valid, 18 Invalid, 4206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1672 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 04:44:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57572 states. [2023-04-02 04:44:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57572 to 53531. [2023-04-02 04:44:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53531 states, 38469 states have (on average 1.2076737113000078) internal successors, (46458), 41616 states have internal predecessors, (46458), 7793 states have call successors, (7793), 4558 states have call predecessors, (7793), 7268 states have return successors, (16814), 9376 states have call predecessors, (16814), 7786 states have call successors, (16814) [2023-04-02 04:44:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53531 states to 53531 states and 71065 transitions. [2023-04-02 04:44:56,257 INFO L78 Accepts]: Start accepts. Automaton has 53531 states and 71065 transitions. Word has length 125 [2023-04-02 04:44:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:44:56,257 INFO L495 AbstractCegarLoop]: Abstraction has 53531 states and 71065 transitions. [2023-04-02 04:44:56,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 9 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 04:44:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 53531 states and 71065 transitions. [2023-04-02 04:44:56,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-04-02 04:44:56,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:44:56,268 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:44:56,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 04:44:56,268 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:44:56,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:44:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash -822384633, now seen corresponding path program 1 times [2023-04-02 04:44:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:44:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064984757] [2023-04-02 04:44:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:44:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:44:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:44:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:44:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:44:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:44:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:44:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:44:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:44:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:44:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:44:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:44:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:44:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:44:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 04:44:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:44:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:44:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:44:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:44:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:44:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:44:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 04:44:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:44:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-02 04:44:56,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:44:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064984757] [2023-04-02 04:44:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064984757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:44:56,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:44:56,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 04:44:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577912571] [2023-04-02 04:44:56,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:44:56,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 04:44:56,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:44:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 04:44:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-02 04:44:56,446 INFO L87 Difference]: Start difference. First operand 53531 states and 71065 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 5 states have internal predecessors, (84), 6 states have call successors, (24), 9 states have call predecessors, (24), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-02 04:45:08,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:45:08,497 INFO L93 Difference]: Finished difference Result 140792 states and 198813 transitions. [2023-04-02 04:45:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 04:45:08,497 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 5 states have internal predecessors, (84), 6 states have call successors, (24), 9 states have call predecessors, (24), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 159 [2023-04-02 04:45:08,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:45:08,980 INFO L225 Difference]: With dead ends: 140792 [2023-04-02 04:45:08,980 INFO L226 Difference]: Without dead ends: 90758 [2023-04-02 04:45:09,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-04-02 04:45:09,140 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1368 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 04:45:09,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 20 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 04:45:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90758 states. [2023-04-02 04:45:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90758 to 81103. [2023-04-02 04:45:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81103 states, 58245 states have (on average 1.211983861275646) internal successors, (70592), 63238 states have internal predecessors, (70592), 11895 states have call successors, (11895), 6786 states have call predecessors, (11895), 10962 states have return successors, (25267), 14274 states have call predecessors, (25267), 11888 states have call successors, (25267) [2023-04-02 04:45:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81103 states to 81103 states and 107754 transitions. [2023-04-02 04:45:20,034 INFO L78 Accepts]: Start accepts. Automaton has 81103 states and 107754 transitions. Word has length 159 [2023-04-02 04:45:20,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:45:20,034 INFO L495 AbstractCegarLoop]: Abstraction has 81103 states and 107754 transitions. [2023-04-02 04:45:20,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 5 states have internal predecessors, (84), 6 states have call successors, (24), 9 states have call predecessors, (24), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-02 04:45:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 81103 states and 107754 transitions. [2023-04-02 04:45:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 04:45:20,052 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:45:20,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:45:20,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 04:45:20,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:45:20,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:45:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1030440026, now seen corresponding path program 1 times [2023-04-02 04:45:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:45:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387118103] [2023-04-02 04:45:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:45:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:45:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:45:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:45:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:45:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:45:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:45:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:45:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:45:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:45:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:45:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:45:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 04:45:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 04:45:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 04:45:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 04:45:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:45:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 04:45:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:45:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:45:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:45:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:45:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:45:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:45:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-02 04:45:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:45:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-02 04:45:20,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:45:20,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387118103] [2023-04-02 04:45:20,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387118103] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:45:20,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:45:20,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 04:45:20,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782747454] [2023-04-02 04:45:20,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:45:20,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 04:45:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:45:20,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 04:45:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-04-02 04:45:20,272 INFO L87 Difference]: Start difference. First operand 81103 states and 107754 transitions. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (25), 10 states have call predecessors, (25), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-02 04:45:41,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:45:41,516 INFO L93 Difference]: Finished difference Result 228538 states and 306564 transitions. [2023-04-02 04:45:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-04-02 04:45:41,516 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (25), 10 states have call predecessors, (25), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 180 [2023-04-02 04:45:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:45:42,497 INFO L225 Difference]: With dead ends: 228538 [2023-04-02 04:45:42,497 INFO L226 Difference]: Without dead ends: 152225 [2023-04-02 04:45:42,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=864, Invalid=3168, Unknown=0, NotChecked=0, Total=4032 [2023-04-02 04:45:42,877 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1454 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 04:45:42,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 47 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 04:45:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152225 states. [2023-04-02 04:46:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152225 to 141271. [2023-04-02 04:46:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141271 states, 102898 states have (on average 1.1804991350657934) internal successors, (121471), 110212 states have internal predecessors, (121471), 19211 states have call successors, (19211), 12224 states have call predecessors, (19211), 19161 states have return successors, (36965), 23351 states have call predecessors, (36965), 19204 states have call successors, (36965) [2023-04-02 04:46:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141271 states to 141271 states and 177647 transitions. [2023-04-02 04:46:01,640 INFO L78 Accepts]: Start accepts. Automaton has 141271 states and 177647 transitions. Word has length 180 [2023-04-02 04:46:01,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:46:01,641 INFO L495 AbstractCegarLoop]: Abstraction has 141271 states and 177647 transitions. [2023-04-02 04:46:01,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (25), 10 states have call predecessors, (25), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-02 04:46:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand 141271 states and 177647 transitions. [2023-04-02 04:46:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-04-02 04:46:01,663 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:46:01,663 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:46:01,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 04:46:01,664 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:46:01,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:46:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1468744252, now seen corresponding path program 1 times [2023-04-02 04:46:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:46:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577539761] [2023-04-02 04:46:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:46:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:46:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:46:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:46:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:46:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:46:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 04:46:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:46:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:46:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:46:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:46:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 04:46:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 04:46:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:46:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:46:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 04:46:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 04:46:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 04:46:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 04:46:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:46:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 04:46:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 04:46:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 04:46:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 04:46:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 04:46:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:46:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 04:46:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-02 04:46:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:46:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577539761] [2023-04-02 04:46:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577539761] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:46:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347001811] [2023-04-02 04:46:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:46:02,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:46:02,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:46:02,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 04:46:02,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 04:46:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:46:02,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-02 04:46:02,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:46:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-02 04:46:02,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:46:02,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347001811] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:46:02,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:46:02,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-04-02 04:46:02,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080580318] [2023-04-02 04:46:02,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:46:02,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 04:46:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:46:02,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 04:46:02,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 04:46:02,366 INFO L87 Difference]: Start difference. First operand 141271 states and 177647 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22)