/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/pc_sfifo_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:23:45,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:23:45,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:23:45,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:23:45,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:23:45,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:23:45,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:23:45,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:23:45,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:23:45,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:23:45,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:23:45,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:23:45,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:23:45,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:23:45,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:23:45,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:23:45,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:23:45,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:23:45,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:23:45,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:23:45,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:23:45,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:23:45,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:23:45,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:23:45,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:23:45,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:23:45,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:23:45,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:23:45,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:23:45,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:23:45,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:23:45,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:23:45,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:23:45,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:23:45,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:23:45,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:23:45,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:23:45,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:23:45,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:23:45,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:23:45,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:23:45,189 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 [2023-03-31 01:23:45,218 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:23:45,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:23:45,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:23:45,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:23:45,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:23:45,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:23:45,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:23:45,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:23:45,221 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:23:45,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:23:45,222 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:23:45,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:23:45,223 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:23:45,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:23:45,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:23:45,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:23:45,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:23:45,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:23:45,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:23:45,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:23:45,225 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:23:45,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:23:45,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:23:45,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:23:45,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:23:45,499 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:23:45,500 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:23:45,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2023-03-31 01:23:46,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:23:46,757 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:23:46,758 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2023-03-31 01:23:46,765 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff2c1ab55/e143e52bc4864459843b5a6b321f2fed/FLAG22c63d7a0 [2023-03-31 01:23:46,777 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff2c1ab55/e143e52bc4864459843b5a6b321f2fed [2023-03-31 01:23:46,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:23:46,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:23:46,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:23:46,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:23:46,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:23:46,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:23:46" (1/1) ... [2023-03-31 01:23:46,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6af789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:46, skipping insertion in model container [2023-03-31 01:23:46,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:23:46" (1/1) ... [2023-03-31 01:23:46,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:23:46,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:23:46,930 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/pc_sfifo_2.cil-1.c[643,656] [2023-03-31 01:23:46,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:23:46,981 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:23:46,991 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/pc_sfifo_2.cil-1.c[643,656] [2023-03-31 01:23:47,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:23:47,022 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:23:47,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47 WrapperNode [2023-03-31 01:23:47,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:23:47,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:23:47,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:23:47,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:23:47,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,063 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:23:47,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:23:47,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:23:47,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:23:47,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (1/1) ... [2023-03-31 01:23:47,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:23:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:23:47,104 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) [2023-03-31 01:23:47,110 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 [2023-03-31 01:23:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:23:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:23:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:23:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-03-31 01:23:47,136 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-03-31 01:23:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-03-31 01:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-03-31 01:23:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:23:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:23:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:23:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:23:47,271 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:23:47,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:23:47,650 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:23:47,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:23:47,656 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-03-31 01:23:47,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:23:47 BoogieIcfgContainer [2023-03-31 01:23:47,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:23:47,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:23:47,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:23:47,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:23:47,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:23:46" (1/3) ... [2023-03-31 01:23:47,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72963390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:23:47, skipping insertion in model container [2023-03-31 01:23:47,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:47" (2/3) ... [2023-03-31 01:23:47,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72963390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:23:47, skipping insertion in model container [2023-03-31 01:23:47,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:23:47" (3/3) ... [2023-03-31 01:23:47,669 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2023-03-31 01:23:47,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:23:47,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:23:47,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:23:47,740 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;@29cab6db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:23:47,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:23:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 91 states have (on average 1.4725274725274726) internal successors, (134), 98 states have internal predecessors, (134), 25 states have call successors, (25), 18 states have call predecessors, (25), 18 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-03-31 01:23:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:23:47,765 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:47,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:47,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:47,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:47,780 INFO L85 PathProgramCache]: Analyzing trace with hash 696303015, now seen corresponding path program 1 times [2023-03-31 01:23:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:47,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868478726] [2023-03-31 01:23:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:23:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:23:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:23:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:23:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:23:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:23:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:23:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:23:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:48,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868478726] [2023-03-31 01:23:48,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868478726] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:48,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:48,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:23:48,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081305751] [2023-03-31 01:23:48,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:23:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:23:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:23:48,392 INFO L87 Difference]: Start difference. First operand has 137 states, 91 states have (on average 1.4725274725274726) internal successors, (134), 98 states have internal predecessors, (134), 25 states have call successors, (25), 18 states have call predecessors, (25), 18 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:23:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:49,591 INFO L93 Difference]: Finished difference Result 360 states and 580 transitions. [2023-03-31 01:23:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-31 01:23:49,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-03-31 01:23:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:49,611 INFO L225 Difference]: With dead ends: 360 [2023-03-31 01:23:49,612 INFO L226 Difference]: Without dead ends: 230 [2023-03-31 01:23:49,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-03-31 01:23:49,621 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 555 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:49,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 56 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:23:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-03-31 01:23:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 121. [2023-03-31 01:23:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 86 states have internal predecessors, (111), 24 states have call successors, (24), 18 states have call predecessors, (24), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-03-31 01:23:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-03-31 01:23:49,706 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 78 [2023-03-31 01:23:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:49,706 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-03-31 01:23:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:23:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-03-31 01:23:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:23:49,709 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:49,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:49,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:23:49,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:49,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1265271643, now seen corresponding path program 1 times [2023-03-31 01:23:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423693451] [2023-03-31 01:23:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:49,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:23:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:23:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:23:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:23:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:23:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:23:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:23:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:23:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:50,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:50,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423693451] [2023-03-31 01:23:50,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423693451] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:50,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:50,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:23:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86244512] [2023-03-31 01:23:50,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:50,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:23:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:23:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:23:50,075 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:23:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:51,414 INFO L93 Difference]: Finished difference Result 512 states and 787 transitions. [2023-03-31 01:23:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 01:23:51,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-03-31 01:23:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:51,423 INFO L225 Difference]: With dead ends: 512 [2023-03-31 01:23:51,423 INFO L226 Difference]: Without dead ends: 410 [2023-03-31 01:23:51,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:23:51,426 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 746 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:51,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 86 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:23:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-03-31 01:23:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 233. [2023-03-31 01:23:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.3625) internal successors, (218), 170 states have internal predecessors, (218), 41 states have call successors, (41), 31 states have call predecessors, (41), 31 states have return successors, (44), 39 states have call predecessors, (44), 37 states have call successors, (44) [2023-03-31 01:23:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 303 transitions. [2023-03-31 01:23:51,503 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 303 transitions. Word has length 78 [2023-03-31 01:23:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:51,504 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 303 transitions. [2023-03-31 01:23:51,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:23:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 303 transitions. [2023-03-31 01:23:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:23:51,512 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:51,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:51,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:23:51,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:51,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1594441220, now seen corresponding path program 1 times [2023-03-31 01:23:51,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:51,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364062900] [2023-03-31 01:23:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:51,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:23:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:23:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:23:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:23:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:23:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:23:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:23:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:23:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:51,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364062900] [2023-03-31 01:23:51,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364062900] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:51,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:23:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873420299] [2023-03-31 01:23:51,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:51,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:23:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:23:51,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:23:51,815 INFO L87 Difference]: Start difference. First operand 233 states and 303 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:23:53,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:53,457 INFO L93 Difference]: Finished difference Result 798 states and 1149 transitions. [2023-03-31 01:23:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-03-31 01:23:53,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-03-31 01:23:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:53,463 INFO L225 Difference]: With dead ends: 798 [2023-03-31 01:23:53,463 INFO L226 Difference]: Without dead ends: 592 [2023-03-31 01:23:53,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-03-31 01:23:53,465 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 989 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:53,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 91 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:23:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-03-31 01:23:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 359. [2023-03-31 01:23:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 248 states have (on average 1.3548387096774193) internal successors, (336), 265 states have internal predecessors, (336), 59 states have call successors, (59), 46 states have call predecessors, (59), 51 states have return successors, (77), 60 states have call predecessors, (77), 55 states have call successors, (77) [2023-03-31 01:23:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 472 transitions. [2023-03-31 01:23:53,560 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 472 transitions. Word has length 78 [2023-03-31 01:23:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:53,563 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 472 transitions. [2023-03-31 01:23:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:23:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 472 transitions. [2023-03-31 01:23:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:23:53,566 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:53,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:53,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:23:53,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:53,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:53,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1313740666, now seen corresponding path program 1 times [2023-03-31 01:23:53,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:53,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748133975] [2023-03-31 01:23:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:53,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:23:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:23:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:23:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:23:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:23:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:23:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:23:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:23:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748133975] [2023-03-31 01:23:53,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748133975] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:53,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:53,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:23:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962699606] [2023-03-31 01:23:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:23:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:23:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:23:53,819 INFO L87 Difference]: Start difference. First operand 359 states and 472 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-03-31 01:23:54,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:54,996 INFO L93 Difference]: Finished difference Result 880 states and 1244 transitions. [2023-03-31 01:23:54,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:23:54,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2023-03-31 01:23:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:55,000 INFO L225 Difference]: With dead ends: 880 [2023-03-31 01:23:55,001 INFO L226 Difference]: Without dead ends: 564 [2023-03-31 01:23:55,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-03-31 01:23:55,003 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 336 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:55,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 117 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:23:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-03-31 01:23:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 374. [2023-03-31 01:23:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 260 states have (on average 1.3384615384615384) internal successors, (348), 277 states have internal predecessors, (348), 59 states have call successors, (59), 46 states have call predecessors, (59), 54 states have return successors, (80), 63 states have call predecessors, (80), 55 states have call successors, (80) [2023-03-31 01:23:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 487 transitions. [2023-03-31 01:23:55,078 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 487 transitions. Word has length 78 [2023-03-31 01:23:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:55,079 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 487 transitions. [2023-03-31 01:23:55,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-03-31 01:23:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 487 transitions. [2023-03-31 01:23:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:23:55,080 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:55,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:55,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:23:55,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:55,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1241354108, now seen corresponding path program 1 times [2023-03-31 01:23:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:55,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091211567] [2023-03-31 01:23:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:55,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:23:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:23:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:23:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:23:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:23:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:23:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:23:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:23:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:55,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:55,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091211567] [2023-03-31 01:23:55,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091211567] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:55,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:23:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472264761] [2023-03-31 01:23:55,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:55,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:23:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:55,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:23:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:23:55,323 INFO L87 Difference]: Start difference. First operand 374 states and 487 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-03-31 01:23:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:56,488 INFO L93 Difference]: Finished difference Result 886 states and 1233 transitions. [2023-03-31 01:23:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:23:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2023-03-31 01:23:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:56,492 INFO L225 Difference]: With dead ends: 886 [2023-03-31 01:23:56,493 INFO L226 Difference]: Without dead ends: 555 [2023-03-31 01:23:56,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:23:56,495 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 460 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:56,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 126 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:23:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-03-31 01:23:56,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 379. [2023-03-31 01:23:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 264 states have (on average 1.3257575757575757) internal successors, (350), 281 states have internal predecessors, (350), 59 states have call successors, (59), 46 states have call predecessors, (59), 55 states have return successors, (81), 64 states have call predecessors, (81), 55 states have call successors, (81) [2023-03-31 01:23:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 490 transitions. [2023-03-31 01:23:56,562 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 490 transitions. Word has length 78 [2023-03-31 01:23:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:56,564 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 490 transitions. [2023-03-31 01:23:56,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-03-31 01:23:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 490 transitions. [2023-03-31 01:23:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:23:56,568 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:56,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:56,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:23:56,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:56,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash -993207614, now seen corresponding path program 1 times [2023-03-31 01:23:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:56,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799880463] [2023-03-31 01:23:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:56,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:23:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:23:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:23:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:23:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:23:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:23:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:23:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:23:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799880463] [2023-03-31 01:23:56,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799880463] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:56,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:23:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370129526] [2023-03-31 01:23:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:23:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:23:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:23:56,844 INFO L87 Difference]: Start difference. First operand 379 states and 490 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-03-31 01:24:00,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:00,522 INFO L93 Difference]: Finished difference Result 2828 states and 4105 transitions. [2023-03-31 01:24:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-03-31 01:24:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 78 [2023-03-31 01:24:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:00,535 INFO L225 Difference]: With dead ends: 2828 [2023-03-31 01:24:00,535 INFO L226 Difference]: Without dead ends: 2492 [2023-03-31 01:24:00,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=473, Invalid=2077, Unknown=0, NotChecked=0, Total=2550 [2023-03-31 01:24:00,539 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1583 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:00,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 296 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 01:24:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2023-03-31 01:24:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2064. [2023-03-31 01:24:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1488 states have (on average 1.3353494623655915) internal successors, (1987), 1599 states have internal predecessors, (1987), 284 states have call successors, (284), 220 states have call predecessors, (284), 291 states have return successors, (530), 293 states have call predecessors, (530), 280 states have call successors, (530) [2023-03-31 01:24:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2801 transitions. [2023-03-31 01:24:00,912 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2801 transitions. Word has length 78 [2023-03-31 01:24:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:00,912 INFO L495 AbstractCegarLoop]: Abstraction has 2064 states and 2801 transitions. [2023-03-31 01:24:00,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-03-31 01:24:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2801 transitions. [2023-03-31 01:24:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:24:00,916 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:00,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:24:00,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:00,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:00,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2022522555, now seen corresponding path program 1 times [2023-03-31 01:24:00,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:00,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452657353] [2023-03-31 01:24:00,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:24:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:24:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:24:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:24:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:01,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:01,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452657353] [2023-03-31 01:24:01,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452657353] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:01,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:01,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:24:01,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850700628] [2023-03-31 01:24:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:01,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:24:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:24:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:24:01,181 INFO L87 Difference]: Start difference. First operand 2064 states and 2801 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:24:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:03,180 INFO L93 Difference]: Finished difference Result 4216 states and 5907 transitions. [2023-03-31 01:24:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-03-31 01:24:03,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-03-31 01:24:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:03,196 INFO L225 Difference]: With dead ends: 4216 [2023-03-31 01:24:03,196 INFO L226 Difference]: Without dead ends: 2518 [2023-03-31 01:24:03,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:24:03,205 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1108 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:03,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 81 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:24:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2023-03-31 01:24:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2062. [2023-03-31 01:24:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1489 states have (on average 1.3297515110812625) internal successors, (1980), 1594 states have internal predecessors, (1980), 286 states have call successors, (286), 224 states have call predecessors, (286), 286 states have return successors, (514), 292 states have call predecessors, (514), 282 states have call successors, (514) [2023-03-31 01:24:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2780 transitions. [2023-03-31 01:24:03,594 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2780 transitions. Word has length 78 [2023-03-31 01:24:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:03,595 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 2780 transitions. [2023-03-31 01:24:03,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:24:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2780 transitions. [2023-03-31 01:24:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:24:03,598 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:03,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:03,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:24:03,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:03,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1762971651, now seen corresponding path program 1 times [2023-03-31 01:24:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:03,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230348066] [2023-03-31 01:24:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:03,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:24:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:24:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:24:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:24:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:03,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230348066] [2023-03-31 01:24:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230348066] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:03,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:03,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886544820] [2023-03-31 01:24:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:03,793 INFO L87 Difference]: Start difference. First operand 2062 states and 2780 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (15), 8 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:24:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:05,819 INFO L93 Difference]: Finished difference Result 6603 states and 10146 transitions. [2023-03-31 01:24:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-31 01:24:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (15), 8 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-03-31 01:24:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:05,851 INFO L225 Difference]: With dead ends: 6603 [2023-03-31 01:24:05,851 INFO L226 Difference]: Without dead ends: 4612 [2023-03-31 01:24:05,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:24:05,865 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1145 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:05,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 50 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:24:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2023-03-31 01:24:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 3769. [2023-03-31 01:24:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3769 states, 2725 states have (on average 1.3053211009174313) internal successors, (3557), 2928 states have internal predecessors, (3557), 522 states have call successors, (522), 386 states have call predecessors, (522), 521 states have return successors, (1127), 551 states have call predecessors, (1127), 518 states have call successors, (1127) [2023-03-31 01:24:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 5206 transitions. [2023-03-31 01:24:06,531 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 5206 transitions. Word has length 78 [2023-03-31 01:24:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:06,532 INFO L495 AbstractCegarLoop]: Abstraction has 3769 states and 5206 transitions. [2023-03-31 01:24:06,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (15), 8 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:24:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 5206 transitions. [2023-03-31 01:24:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-03-31 01:24:06,534 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:06,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:06,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:24:06,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:06,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1342127551, now seen corresponding path program 1 times [2023-03-31 01:24:06,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:06,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251482010] [2023-03-31 01:24:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:06,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:24:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:24:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:24:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:24:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:06,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251482010] [2023-03-31 01:24:06,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251482010] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:06,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:06,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:24:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858371574] [2023-03-31 01:24:06,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:06,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:24:06,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:24:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:24:06,690 INFO L87 Difference]: Start difference. First operand 3769 states and 5206 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (15), 8 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-03-31 01:24:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:08,617 INFO L93 Difference]: Finished difference Result 10228 states and 14848 transitions. [2023-03-31 01:24:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:24:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (15), 8 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2023-03-31 01:24:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:08,653 INFO L225 Difference]: With dead ends: 10228 [2023-03-31 01:24:08,653 INFO L226 Difference]: Without dead ends: 6476 [2023-03-31 01:24:08,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:24:08,675 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 660 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:08,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 72 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:24:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2023-03-31 01:24:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 5781. [2023-03-31 01:24:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5781 states, 4192 states have (on average 1.2841125954198473) internal successors, (5383), 4416 states have internal predecessors, (5383), 803 states have call successors, (803), 640 states have call predecessors, (803), 785 states have return successors, (1823), 817 states have call predecessors, (1823), 799 states have call successors, (1823) [2023-03-31 01:24:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5781 states to 5781 states and 8009 transitions. [2023-03-31 01:24:09,749 INFO L78 Accepts]: Start accepts. Automaton has 5781 states and 8009 transitions. Word has length 79 [2023-03-31 01:24:09,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:09,750 INFO L495 AbstractCegarLoop]: Abstraction has 5781 states and 8009 transitions. [2023-03-31 01:24:09,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (15), 8 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-03-31 01:24:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5781 states and 8009 transitions. [2023-03-31 01:24:09,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-03-31 01:24:09,751 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:09,751 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] [2023-03-31 01:24:09,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:24:09,752 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:09,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1030469366, now seen corresponding path program 1 times [2023-03-31 01:24:09,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:09,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527088536] [2023-03-31 01:24:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:09,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:24:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:24:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:24:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:24:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:24:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:09,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:09,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527088536] [2023-03-31 01:24:09,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527088536] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:09,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:09,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:24:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071145156] [2023-03-31 01:24:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:09,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:24:09,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:24:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:24:09,919 INFO L87 Difference]: Start difference. First operand 5781 states and 8009 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (16), 9 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-03-31 01:24:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:12,251 INFO L93 Difference]: Finished difference Result 7786 states and 10648 transitions. [2023-03-31 01:24:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-03-31 01:24:12,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (16), 9 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2023-03-31 01:24:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:12,290 INFO L225 Difference]: With dead ends: 7786 [2023-03-31 01:24:12,290 INFO L226 Difference]: Without dead ends: 7783 [2023-03-31 01:24:12,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2023-03-31 01:24:12,294 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 703 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:12,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 63 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:24:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2023-03-31 01:24:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 6993. [2023-03-31 01:24:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6993 states, 5062 states have (on average 1.270644014223627) internal successors, (6432), 5307 states have internal predecessors, (6432), 968 states have call successors, (968), 790 states have call predecessors, (968), 962 states have return successors, (2177), 997 states have call predecessors, (2177), 965 states have call successors, (2177) [2023-03-31 01:24:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6993 states to 6993 states and 9577 transitions. [2023-03-31 01:24:13,437 INFO L78 Accepts]: Start accepts. Automaton has 6993 states and 9577 transitions. Word has length 88 [2023-03-31 01:24:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:13,439 INFO L495 AbstractCegarLoop]: Abstraction has 6993 states and 9577 transitions. [2023-03-31 01:24:13,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (16), 9 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-03-31 01:24:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6993 states and 9577 transitions. [2023-03-31 01:24:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-03-31 01:24:13,442 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:13,442 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] [2023-03-31 01:24:13,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:24:13,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:13,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1879462275, now seen corresponding path program 1 times [2023-03-31 01:24:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:13,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558220771] [2023-03-31 01:24:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:13,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:24:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:24:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:24:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:24:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:24:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558220771] [2023-03-31 01:24:13,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558220771] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:24:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341263897] [2023-03-31 01:24:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:13,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:24:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:24:13,840 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) [2023-03-31 01:24:13,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:24:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:13,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 33 conjunts are in the unsatisfiable core [2023-03-31 01:24:14,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:24:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:14,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:24:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:14,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341263897] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:24:14,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:24:14,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 19 [2023-03-31 01:24:14,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969574499] [2023-03-31 01:24:14,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:24:14,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-03-31 01:24:14,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-03-31 01:24:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:24:14,698 INFO L87 Difference]: Start difference. First operand 6993 states and 9577 transitions. Second operand has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 13 states have internal predecessors, (135), 6 states have call successors, (37), 14 states have call predecessors, (37), 6 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2023-03-31 01:24:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:22,569 INFO L93 Difference]: Finished difference Result 21220 states and 32734 transitions. [2023-03-31 01:24:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-03-31 01:24:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 13 states have internal predecessors, (135), 6 states have call successors, (37), 14 states have call predecessors, (37), 6 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 89 [2023-03-31 01:24:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:22,670 INFO L225 Difference]: With dead ends: 21220 [2023-03-31 01:24:22,671 INFO L226 Difference]: Without dead ends: 18633 [2023-03-31 01:24:22,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3213 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1274, Invalid=8038, Unknown=0, NotChecked=0, Total=9312 [2023-03-31 01:24:22,703 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 2940 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 3678 mSolverCounterSat, 1326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 5004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1326 IncrementalHoareTripleChecker+Valid, 3678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:22,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2975 Valid, 277 Invalid, 5004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1326 Valid, 3678 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-03-31 01:24:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18633 states. [2023-03-31 01:24:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18633 to 16535. [2023-03-31 01:24:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16535 states, 12014 states have (on average 1.288579990011653) internal successors, (15481), 12784 states have internal predecessors, (15481), 2308 states have call successors, (2308), 1719 states have call predecessors, (2308), 2212 states have return successors, (7166), 2331 states have call predecessors, (7166), 2304 states have call successors, (7166) [2023-03-31 01:24:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16535 states to 16535 states and 24955 transitions. [2023-03-31 01:24:25,636 INFO L78 Accepts]: Start accepts. Automaton has 16535 states and 24955 transitions. Word has length 89 [2023-03-31 01:24:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:25,636 INFO L495 AbstractCegarLoop]: Abstraction has 16535 states and 24955 transitions. [2023-03-31 01:24:25,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 13 states have internal predecessors, (135), 6 states have call successors, (37), 14 states have call predecessors, (37), 6 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2023-03-31 01:24:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 16535 states and 24955 transitions. [2023-03-31 01:24:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-03-31 01:24:25,639 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:25,639 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-03-31 01:24:25,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 01:24:25,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-31 01:24:25,846 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:25,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash -793727491, now seen corresponding path program 2 times [2023-03-31 01:24:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705088593] [2023-03-31 01:24:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:24:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:24:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:24:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:24:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:24:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:26,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705088593] [2023-03-31 01:24:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705088593] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:26,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854629546] [2023-03-31 01:24:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:26,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:26,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:26,017 INFO L87 Difference]: Start difference. First operand 16535 states and 24955 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 8 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-03-31 01:24:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:29,009 INFO L93 Difference]: Finished difference Result 27522 states and 43053 transitions. [2023-03-31 01:24:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:29,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 8 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 92 [2023-03-31 01:24:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:29,064 INFO L225 Difference]: With dead ends: 27522 [2023-03-31 01:24:29,065 INFO L226 Difference]: Without dead ends: 11800 [2023-03-31 01:24:29,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:24:29,138 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 694 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:29,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 69 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:24:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11800 states. [2023-03-31 01:24:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11800 to 11073. [2023-03-31 01:24:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11073 states, 8089 states have (on average 1.2728396587958957) internal successors, (10296), 8593 states have internal predecessors, (10296), 1560 states have call successors, (1560), 1132 states have call predecessors, (1560), 1423 states have return successors, (3979), 1540 states have call predecessors, (3979), 1556 states have call successors, (3979) [2023-03-31 01:24:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11073 states to 11073 states and 15835 transitions. [2023-03-31 01:24:31,019 INFO L78 Accepts]: Start accepts. Automaton has 11073 states and 15835 transitions. Word has length 92 [2023-03-31 01:24:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 11073 states and 15835 transitions. [2023-03-31 01:24:31,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 8 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-03-31 01:24:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11073 states and 15835 transitions. [2023-03-31 01:24:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-03-31 01:24:31,025 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:31,025 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 01:24:31,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:24:31,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:31,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:31,027 INFO L85 PathProgramCache]: Analyzing trace with hash -289428305, now seen corresponding path program 1 times [2023-03-31 01:24:31,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:31,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731531530] [2023-03-31 01:24:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:31,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:24:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:24:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:24:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 01:24:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-03-31 01:24:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-03-31 01:24:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-31 01:24:31,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:31,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731531530] [2023-03-31 01:24:31,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731531530] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:31,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:31,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 01:24:31,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760796400] [2023-03-31 01:24:31,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:31,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 01:24:31,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 01:24:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-03-31 01:24:31,276 INFO L87 Difference]: Start difference. First operand 11073 states and 15835 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (17), 9 states have call predecessors, (17), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)