/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/token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:24:12,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:24:12,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:24:12,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:24:12,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:24:12,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:24:12,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:24:12,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:24:12,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:24:12,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:24:12,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:24:12,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:24:12,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:24:12,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:24:12,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:24:12,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:24:12,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:24:12,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:24:12,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:24:12,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:24:12,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:24:12,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:24:12,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:24:12,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:24:12,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:24:12,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:24:12,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:24:12,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:24:12,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:24:12,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:24:12,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:24:12,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:24:12,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:24:12,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:24:12,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:24:12,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:24:12,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:24:12,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:24:12,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:24:12,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:24:12,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:24:12,164 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 01:24:12,183 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:24:12,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:24:12,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:24:12,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:24:12,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:24:12,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:24:12,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:24:12,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:24:12,185 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:24:12,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:24:12,186 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:24:12,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:24:12,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:24:12,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:24:12,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:24:12,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:24:12,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:24:12,187 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:24:12,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:24:12,187 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:24:12,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:24:12,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:24:12,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:24:12,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:24:12,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:24:12,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:24:12,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:24:12,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:24:12,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:24:12,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:24:12,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:24:12,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:24:12,190 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:24:12,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:24:12,190 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:24:12,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:24:12,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:24:12,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:24:12,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:24:12,464 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:24:12,464 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:24:12,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2023-03-31 01:24:13,540 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:24:13,763 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:24:13,763 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2023-03-31 01:24:13,771 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94dba9e8/3cacc1780aee4e078c5c5d91d39f410e/FLAGd5fd8b030 [2023-03-31 01:24:13,784 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94dba9e8/3cacc1780aee4e078c5c5d91d39f410e [2023-03-31 01:24:13,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:24:13,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:24:13,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:24:13,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:24:13,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:24:13,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:24:13" (1/1) ... [2023-03-31 01:24:13,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48dd516a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:13, skipping insertion in model container [2023-03-31 01:24:13,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:24:13" (1/1) ... [2023-03-31 01:24:13,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:24:13,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:24:13,989 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/token_ring.03.cil-2.c[671,684] [2023-03-31 01:24:14,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:24:14,082 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:24:14,094 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/token_ring.03.cil-2.c[671,684] [2023-03-31 01:24:14,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:24:14,167 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:24:14,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14 WrapperNode [2023-03-31 01:24:14,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:24:14,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:24:14,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:24:14,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:24:14,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:24:14,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:24:14,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:24:14,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:24:14,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (1/1) ... [2023-03-31 01:24:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:24:14,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:24:14,305 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 01:24:14,311 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 01:24:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:24:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:24:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:24:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-03-31 01:24:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-03-31 01:24:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-03-31 01:24:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-03-31 01:24:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-03-31 01:24:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-03-31 01:24:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-03-31 01:24:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:24:14,349 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:24:14,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:24:14,349 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:24:14,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:24:14,349 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-03-31 01:24:14,349 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-03-31 01:24:14,349 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-03-31 01:24:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-03-31 01:24:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:24:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:24:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:24:14,463 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:24:14,465 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:24:14,843 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:24:14,857 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:24:14,858 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-03-31 01:24:14,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:24:14 BoogieIcfgContainer [2023-03-31 01:24:14,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:24:14,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:24:14,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:24:14,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:24:14,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:24:13" (1/3) ... [2023-03-31 01:24:14,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c2328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:24:14, skipping insertion in model container [2023-03-31 01:24:14,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14" (2/3) ... [2023-03-31 01:24:14,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c2328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:24:14, skipping insertion in model container [2023-03-31 01:24:14,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:24:14" (3/3) ... [2023-03-31 01:24:14,867 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-2.c [2023-03-31 01:24:14,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:24:14,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:24:14,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:24:14,972 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;@2753e001, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:24:14,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:24:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 143 states have (on average 1.5454545454545454) internal successors, (221), 151 states have internal predecessors, (221), 35 states have call successors, (35), 24 states have call predecessors, (35), 24 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-03-31 01:24:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:14,990 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:14,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:14,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:14,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:14,996 INFO L85 PathProgramCache]: Analyzing trace with hash -375332212, now seen corresponding path program 1 times [2023-03-31 01:24:15,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:15,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80533332] [2023-03-31 01:24:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:15,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,639 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 01:24:15,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:15,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80533332] [2023-03-31 01:24:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80533332] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:15,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:15,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:24:15,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037441063] [2023-03-31 01:24:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:15,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:24:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:15,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:24:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:24:15,683 INFO L87 Difference]: Start difference. First operand has 204 states, 143 states have (on average 1.5454545454545454) internal successors, (221), 151 states have internal predecessors, (221), 35 states have call successors, (35), 24 states have call predecessors, (35), 24 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:17,405 INFO L93 Difference]: Finished difference Result 505 states and 784 transitions. [2023-03-31 01:24:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 01:24:17,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:24:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:17,418 INFO L225 Difference]: With dead ends: 505 [2023-03-31 01:24:17,419 INFO L226 Difference]: Without dead ends: 307 [2023-03-31 01:24:17,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:24:17,426 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 784 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:17,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 42 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:24:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-03-31 01:24:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 195. [2023-03-31 01:24:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 138 states have (on average 1.4565217391304348) internal successors, (201), 144 states have internal predecessors, (201), 35 states have call successors, (35), 24 states have call predecessors, (35), 21 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-03-31 01:24:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 268 transitions. [2023-03-31 01:24:17,526 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 268 transitions. Word has length 105 [2023-03-31 01:24:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:17,527 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 268 transitions. [2023-03-31 01:24:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 268 transitions. [2023-03-31 01:24:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:17,530 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:17,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:24:17,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:17,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1583242574, now seen corresponding path program 1 times [2023-03-31 01:24:17,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:17,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445790023] [2023-03-31 01:24:17,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:17,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,960 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 01:24:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445790023] [2023-03-31 01:24:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445790023] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397611856] [2023-03-31 01:24:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:17,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:17,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:17,966 INFO L87 Difference]: Start difference. First operand 195 states and 268 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:21,114 INFO L93 Difference]: Finished difference Result 996 states and 1483 transitions. [2023-03-31 01:24:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:24:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:21,121 INFO L225 Difference]: With dead ends: 996 [2023-03-31 01:24:21,121 INFO L226 Difference]: Without dead ends: 822 [2023-03-31 01:24:21,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:24:21,124 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1519 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:21,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 16 Invalid, 3671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 3241 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-31 01:24:21,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-03-31 01:24:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 557. [2023-03-31 01:24:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 409 states have (on average 1.466992665036675) internal successors, (600), 433 states have internal predecessors, (600), 87 states have call successors, (87), 56 states have call predecessors, (87), 60 states have return successors, (105), 86 states have call predecessors, (105), 84 states have call successors, (105) [2023-03-31 01:24:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 792 transitions. [2023-03-31 01:24:21,250 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 792 transitions. Word has length 105 [2023-03-31 01:24:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:21,250 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 792 transitions. [2023-03-31 01:24:21,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 792 transitions. [2023-03-31 01:24:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:21,254 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:21,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:21,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:24:21,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:21,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 525404496, now seen corresponding path program 1 times [2023-03-31 01:24:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:21,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551268730] [2023-03-31 01:24:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,603 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 01:24:21,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:21,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551268730] [2023-03-31 01:24:21,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551268730] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:21,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:21,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:21,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739177346] [2023-03-31 01:24:21,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:21,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:21,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:21,606 INFO L87 Difference]: Start difference. First operand 557 states and 792 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:24,688 INFO L93 Difference]: Finished difference Result 1677 states and 2498 transitions. [2023-03-31 01:24:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:24:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:24,703 INFO L225 Difference]: With dead ends: 1677 [2023-03-31 01:24:24,704 INFO L226 Difference]: Without dead ends: 1325 [2023-03-31 01:24:24,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:24:24,716 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1589 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:24,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 16 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-31 01:24:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-03-31 01:24:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 892. [2023-03-31 01:24:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 664 states have (on average 1.4713855421686748) internal successors, (977), 700 states have internal predecessors, (977), 131 states have call successors, (131), 88 states have call predecessors, (131), 96 states have return successors, (163), 132 states have call predecessors, (163), 128 states have call successors, (163) [2023-03-31 01:24:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1271 transitions. [2023-03-31 01:24:24,942 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1271 transitions. Word has length 105 [2023-03-31 01:24:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:24,943 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1271 transitions. [2023-03-31 01:24:24,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1271 transitions. [2023-03-31 01:24:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:24,947 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:24,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:24,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:24:24,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:24,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash -617097970, now seen corresponding path program 1 times [2023-03-31 01:24:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:24,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000060401] [2023-03-31 01:24:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:24,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,308 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 01:24:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000060401] [2023-03-31 01:24:25,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000060401] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:25,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:25,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:25,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567495338] [2023-03-31 01:24:25,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:25,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:25,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:25,313 INFO L87 Difference]: Start difference. First operand 892 states and 1271 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:28,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:28,424 INFO L93 Difference]: Finished difference Result 2998 states and 4465 transitions. [2023-03-31 01:24:28,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:28,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:24:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:28,438 INFO L225 Difference]: With dead ends: 2998 [2023-03-31 01:24:28,439 INFO L226 Difference]: Without dead ends: 2325 [2023-03-31 01:24:28,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:24:28,443 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1626 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:28,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 16 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-31 01:24:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2023-03-31 01:24:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1561. [2023-03-31 01:24:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1173 states have (on average 1.4722932651321399) internal successors, (1727), 1233 states have internal predecessors, (1727), 219 states have call successors, (219), 152 states have call predecessors, (219), 168 states have return successors, (285), 224 states have call predecessors, (285), 216 states have call successors, (285) [2023-03-31 01:24:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2231 transitions. [2023-03-31 01:24:28,693 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2231 transitions. Word has length 105 [2023-03-31 01:24:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:28,694 INFO L495 AbstractCegarLoop]: Abstraction has 1561 states and 2231 transitions. [2023-03-31 01:24:28,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2231 transitions. [2023-03-31 01:24:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:28,697 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:28,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:24:28,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:28,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -376858224, now seen corresponding path program 1 times [2023-03-31 01:24:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:28,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925347914] [2023-03-31 01:24:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,989 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 01:24:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925347914] [2023-03-31 01:24:28,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925347914] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:28,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:28,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:28,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787447450] [2023-03-31 01:24:28,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:28,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:28,992 INFO L87 Difference]: Start difference. First operand 1561 states and 2231 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:32,867 INFO L93 Difference]: Finished difference Result 6765 states and 10120 transitions. [2023-03-31 01:24:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:32,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:24:32,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:32,905 INFO L225 Difference]: With dead ends: 6765 [2023-03-31 01:24:32,905 INFO L226 Difference]: Without dead ends: 5447 [2023-03-31 01:24:32,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:24:32,914 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1326 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3428 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 3428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:32,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 16 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 3428 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 01:24:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2023-03-31 01:24:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 4291. [2023-03-31 01:24:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 3238 states have (on average 1.4573810994441012) internal successors, (4719), 3503 states have internal predecessors, (4719), 576 states have call successors, (576), 379 states have call predecessors, (576), 476 states have return successors, (963), 581 states have call predecessors, (963), 573 states have call successors, (963) [2023-03-31 01:24:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 6258 transitions. [2023-03-31 01:24:33,643 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 6258 transitions. Word has length 105 [2023-03-31 01:24:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:33,643 INFO L495 AbstractCegarLoop]: Abstraction has 4291 states and 6258 transitions. [2023-03-31 01:24:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 6258 transitions. [2023-03-31 01:24:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:33,647 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:33,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:33,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:24:33,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:33,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash 462175438, now seen corresponding path program 1 times [2023-03-31 01:24:33,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:33,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677245322] [2023-03-31 01:24:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:33,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,917 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 01:24:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677245322] [2023-03-31 01:24:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677245322] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:33,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:33,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238146552] [2023-03-31 01:24:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:33,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:33,920 INFO L87 Difference]: Start difference. First operand 4291 states and 6258 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:38,294 INFO L93 Difference]: Finished difference Result 17519 states and 26513 transitions. [2023-03-31 01:24:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:38,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:24:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:38,386 INFO L225 Difference]: With dead ends: 17519 [2023-03-31 01:24:38,386 INFO L226 Difference]: Without dead ends: 13616 [2023-03-31 01:24:38,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:24:38,410 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1192 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3377 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 3377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:38,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 16 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 3377 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-31 01:24:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13616 states. [2023-03-31 01:24:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13616 to 10697. [2023-03-31 01:24:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10697 states, 8142 states have (on average 1.4392041267501843) internal successors, (11718), 8768 states have internal predecessors, (11718), 1335 states have call successors, (1335), 959 states have call predecessors, (1335), 1219 states have return successors, (2618), 1356 states have call predecessors, (2618), 1332 states have call successors, (2618) [2023-03-31 01:24:40,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10697 states to 10697 states and 15671 transitions. [2023-03-31 01:24:40,367 INFO L78 Accepts]: Start accepts. Automaton has 10697 states and 15671 transitions. Word has length 105 [2023-03-31 01:24:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:40,368 INFO L495 AbstractCegarLoop]: Abstraction has 10697 states and 15671 transitions. [2023-03-31 01:24:40,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 10697 states and 15671 transitions. [2023-03-31 01:24:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:40,375 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:40,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:40,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:24:40,376 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:40,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash 489241040, now seen corresponding path program 1 times [2023-03-31 01:24:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:40,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359027407] [2023-03-31 01:24:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:40,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:40,669 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 01:24:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:40,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359027407] [2023-03-31 01:24:40,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359027407] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:40,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:40,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456195890] [2023-03-31 01:24:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:40,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:40,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:40,671 INFO L87 Difference]: Start difference. First operand 10697 states and 15671 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:47,472 INFO L93 Difference]: Finished difference Result 44194 states and 67811 transitions. [2023-03-31 01:24:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:47,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:24:47,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:47,691 INFO L225 Difference]: With dead ends: 44194 [2023-03-31 01:24:47,692 INFO L226 Difference]: Without dead ends: 34146 [2023-03-31 01:24:47,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:24:47,753 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1524 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3169 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 3169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:47,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 16 Invalid, 3630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 3169 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 01:24:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34146 states. [2023-03-31 01:24:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34146 to 27976. [2023-03-31 01:24:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27976 states, 21404 states have (on average 1.4385628854419734) internal successors, (30791), 22933 states have internal predecessors, (30791), 3365 states have call successors, (3365), 2649 states have call predecessors, (3365), 3206 states have return successors, (7601), 3402 states have call predecessors, (7601), 3362 states have call successors, (7601) [2023-03-31 01:24:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27976 states to 27976 states and 41757 transitions. [2023-03-31 01:24:52,142 INFO L78 Accepts]: Start accepts. Automaton has 27976 states and 41757 transitions. Word has length 105 [2023-03-31 01:24:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:52,142 INFO L495 AbstractCegarLoop]: Abstraction has 27976 states and 41757 transitions. [2023-03-31 01:24:52,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:24:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 27976 states and 41757 transitions. [2023-03-31 01:24:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:24:52,154 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:52,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:52,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:24:52,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:52,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:52,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1588095858, now seen corresponding path program 1 times [2023-03-31 01:24:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:52,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942529127] [2023-03-31 01:24:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:52,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:52,389 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 01:24:52,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942529127] [2023-03-31 01:24:52,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942529127] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:52,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:52,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:52,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847733677] [2023-03-31 01:24:52,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:52,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:52,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:52,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:52,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:52,391 INFO L87 Difference]: Start difference. First operand 27976 states and 41757 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:25:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:25:04,693 INFO L93 Difference]: Finished difference Result 106125 states and 165449 transitions. [2023-03-31 01:25:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:25:04,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-03-31 01:25:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:25:05,171 INFO L225 Difference]: With dead ends: 106125 [2023-03-31 01:25:05,172 INFO L226 Difference]: Without dead ends: 79308 [2023-03-31 01:25:05,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:25:05,302 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1210 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:25:05,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 16 Invalid, 3509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 01:25:05,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79308 states.