/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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:24:12,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:24:12,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:24:12,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:24:12,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:24:12,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:24:12,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:24:12,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:24:12,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:24:12,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:24:12,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:24:12,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:24:12,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:24:12,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:24:12,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:24:12,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:24:12,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:24:12,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:24:12,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:24:12,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:24:12,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:24:12,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:24:12,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:24:12,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:24:12,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:24:12,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:24:12,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:24:12,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:24:12,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:24:12,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:24:12,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:24:12,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:24:12,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:24:12,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:24:12,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:24:12,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:24:12,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:24:12,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:24:12,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:24:12,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:24:12,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:24:12,098 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 01:24:12,121 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:24:12,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:24:12,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:24:12,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:24:12,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:24:12,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:24:12,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:24:12,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:24:12,124 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:24:12,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:24:12,125 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:24:12,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:24:12,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:24:12,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:24:12,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:24:12,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:24:12,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:24:12,126 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:24:12,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:24:12,126 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:24:12,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:24:12,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:24:12,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:24:12,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:24:12,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:24:12,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:24:12,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:24:12,128 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:24:12,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:24:12,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:24:12,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:24:12,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:24:12,345 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:24:12,345 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:24:12,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.03.cil-1.c [2023-03-31 01:24:13,537 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:24:13,717 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:24:13,717 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.03.cil-1.c [2023-03-31 01:24:13,728 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a705a53a/ea4b755d538e4fffad8b1ec591726061/FLAG8bce766bd [2023-03-31 01:24:13,740 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a705a53a/ea4b755d538e4fffad8b1ec591726061 [2023-03-31 01:24:13,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:24:13,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:24:13,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:24:13,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:24:13,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:24:13,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:24:13" (1/1) ... [2023-03-31 01:24:13,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e04582 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 01:24:13,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:24:13" (1/1) ... [2023-03-31 01:24:13,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:24:13,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:24:13,887 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-1.c[671,684] [2023-03-31 01:24:13,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:24:13,953 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:24:13,963 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-1.c[671,684] [2023-03-31 01:24:13,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:24:14,003 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:24:14,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:24:14 WrapperNode [2023-03-31 01:24:14,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:24:14,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:24:14,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:24:14,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:24:14,014 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 01:24:14,014 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 01:24:14,021 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 01:24:14,021 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 01:24:14,032 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 01:24:14,040 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 01:24:14,050 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 01:24:14,051 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 01:24:14,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:24:14,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:24:14,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:24:14,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:24:14,061 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 01:24:14,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:24:14,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:24:14,097 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 01:24:14,119 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 01:24:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:24:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:24:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:24:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-03-31 01:24:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-03-31 01:24:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-03-31 01:24:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-03-31 01:24:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-03-31 01:24:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-03-31 01:24:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-03-31 01:24:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-03-31 01:24:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-03-31 01:24:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-03-31 01:24:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-03-31 01:24:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-03-31 01:24:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-03-31 01:24:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-03-31 01:24:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-03-31 01:24:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-03-31 01:24:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-03-31 01:24:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-03-31 01:24:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-03-31 01:24:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-03-31 01:24:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-03-31 01:24:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:24:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:24:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:24:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:24:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:24:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:24:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:24:14,249 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:24:14,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:24:14,715 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:24:14,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:24:14,728 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-03-31 01:24:14,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:24:14 BoogieIcfgContainer [2023-03-31 01:24:14,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:24:14,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:24:14,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:24:14,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:24:14,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:24:13" (1/3) ... [2023-03-31 01:24:14,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7710c284 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 01:24:14,735 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 01:24:14,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7710c284 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 01:24:14,736 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 01:24:14,740 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-1.c [2023-03-31 01:24:14,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:24:14,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:24:14,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:24:14,836 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;@c9c94f1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:24:14,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:24:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 158 states have internal predecessors, (232), 36 states have call successors, (36), 24 states have call predecessors, (36), 24 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-03-31 01:24:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:14,860 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:14,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:14,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:14,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 675666877, now seen corresponding path program 1 times [2023-03-31 01:24:14,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:14,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041879618] [2023-03-31 01:24:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:14,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:15,493 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 01:24:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041879618] [2023-03-31 01:24:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041879618] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:15,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:24:15,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622987613] [2023-03-31 01:24:15,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:24:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:15,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:24:15,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:24:15,552 INFO L87 Difference]: Start difference. First operand has 211 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 158 states have internal predecessors, (232), 36 states have call successors, (36), 24 states have call predecessors, (36), 24 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 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 01:24:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:17,278 INFO L93 Difference]: Finished difference Result 519 states and 810 transitions. [2023-03-31 01:24:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 01:24:17,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 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 106 [2023-03-31 01:24:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:17,293 INFO L225 Difference]: With dead ends: 519 [2023-03-31 01:24:17,293 INFO L226 Difference]: Without dead ends: 314 [2023-03-31 01:24:17,297 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 01:24:17,300 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1074 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:17,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 31 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:24:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-03-31 01:24:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 202. [2023-03-31 01:24:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 144 states have (on average 1.4722222222222223) internal successors, (212), 151 states have internal predecessors, (212), 36 states have call successors, (36), 24 states have call predecessors, (36), 21 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-03-31 01:24:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 280 transitions. [2023-03-31 01:24:17,414 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 280 transitions. Word has length 106 [2023-03-31 01:24:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:17,415 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 280 transitions. [2023-03-31 01:24:17,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 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 01:24:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 280 transitions. [2023-03-31 01:24:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:17,418 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:17,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:24:17,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:17,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1261943099, now seen corresponding path program 1 times [2023-03-31 01:24:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14400895] [2023-03-31 01:24:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:17,892 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 01:24:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:17,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14400895] [2023-03-31 01:24:17,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14400895] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:17,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:17,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424269443] [2023-03-31 01:24:17,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:17,897 INFO L87 Difference]: Start difference. First operand 202 states and 280 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:21,195 INFO L93 Difference]: Finished difference Result 1024 states and 1531 transitions. [2023-03-31 01:24:21,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:21,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 106 [2023-03-31 01:24:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:21,203 INFO L225 Difference]: With dead ends: 1024 [2023-03-31 01:24:21,203 INFO L226 Difference]: Without dead ends: 843 [2023-03-31 01:24:21,204 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 01:24:21,206 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1387 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:21,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 16 Invalid, 3924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 01:24:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-03-31 01:24:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 576. [2023-03-31 01:24:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 427 states have (on average 1.4824355971896956) internal successors, (633), 452 states have internal predecessors, (633), 88 states have call successors, (88), 56 states have call predecessors, (88), 60 states have return successors, (105), 86 states have call predecessors, (105), 84 states have call successors, (105) [2023-03-31 01:24:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 826 transitions. [2023-03-31 01:24:21,313 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 826 transitions. Word has length 106 [2023-03-31 01:24:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:21,343 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 826 transitions. [2023-03-31 01:24:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:21,343 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 826 transitions. [2023-03-31 01:24:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:21,347 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:21,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:21,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:24:21,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:21,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1466266247, now seen corresponding path program 1 times [2023-03-31 01:24:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:21,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286107583] [2023-03-31 01:24:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:21,659 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 01:24:21,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:21,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286107583] [2023-03-31 01:24:21,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286107583] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:21,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:21,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229206115] [2023-03-31 01:24:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:21,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:21,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:21,671 INFO L87 Difference]: Start difference. First operand 576 states and 826 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:24,652 INFO L93 Difference]: Finished difference Result 1723 states and 2579 transitions. [2023-03-31 01:24:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 106 [2023-03-31 01:24:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:24,662 INFO L225 Difference]: With dead ends: 1723 [2023-03-31 01:24:24,662 INFO L226 Difference]: Without dead ends: 1358 [2023-03-31 01:24:24,664 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 01:24:24,665 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1476 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:24,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 16 Invalid, 3597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-31 01:24:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2023-03-31 01:24:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 923. [2023-03-31 01:24:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 694 states have (on average 1.4870317002881845) internal successors, (1032), 731 states have internal predecessors, (1032), 132 states have call successors, (132), 88 states have call predecessors, (132), 96 states have return successors, (163), 132 states have call predecessors, (163), 128 states have call successors, (163) [2023-03-31 01:24:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1327 transitions. [2023-03-31 01:24:24,819 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1327 transitions. Word has length 106 [2023-03-31 01:24:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:24,819 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1327 transitions. [2023-03-31 01:24:24,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1327 transitions. [2023-03-31 01:24:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:24,822 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:24,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:24,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:24:24,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:24,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1770862971, now seen corresponding path program 1 times [2023-03-31 01:24:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279841865] [2023-03-31 01:24:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:24,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:25,107 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 01:24:25,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279841865] [2023-03-31 01:24:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279841865] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:25,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055458683] [2023-03-31 01:24:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:25,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:25,109 INFO L87 Difference]: Start difference. First operand 923 states and 1327 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:28,464 INFO L93 Difference]: Finished difference Result 3080 states and 4612 transitions. [2023-03-31 01:24:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 106 [2023-03-31 01:24:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:28,477 INFO L225 Difference]: With dead ends: 3080 [2023-03-31 01:24:28,477 INFO L226 Difference]: Without dead ends: 2382 [2023-03-31 01:24:28,479 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 01:24:28,481 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1115 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 3492 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 3492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:28,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 17 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 3492 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 01:24:28,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2023-03-31 01:24:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1616. [2023-03-31 01:24:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1227 states have (on average 1.4881825590872046) internal successors, (1826), 1288 states have internal predecessors, (1826), 220 states have call successors, (220), 152 states have call predecessors, (220), 168 states have return successors, (285), 224 states have call predecessors, (285), 216 states have call successors, (285) [2023-03-31 01:24:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2331 transitions. [2023-03-31 01:24:28,714 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2331 transitions. Word has length 106 [2023-03-31 01:24:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:28,714 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2331 transitions. [2023-03-31 01:24:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2331 transitions. [2023-03-31 01:24:28,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:28,723 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:28,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:24:28,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:28,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash 628360505, now seen corresponding path program 1 times [2023-03-31 01:24:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:28,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061978496] [2023-03-31 01:24:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:28,906 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 01:24:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,931 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 01:24:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:28,969 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 28 [2023-03-31 01:24:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:28,976 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 89 [2023-03-31 01:24:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:28,979 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 01:24:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061978496] [2023-03-31 01:24:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061978496] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:28,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:28,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519211457] [2023-03-31 01:24:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:28,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:28,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:28,983 INFO L87 Difference]: Start difference. First operand 1616 states and 2331 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:32,627 INFO L93 Difference]: Finished difference Result 6973 states and 10498 transitions. [2023-03-31 01:24:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:32,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 106 [2023-03-31 01:24:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:32,654 INFO L225 Difference]: With dead ends: 6973 [2023-03-31 01:24:32,654 INFO L226 Difference]: Without dead ends: 5606 [2023-03-31 01:24:32,659 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 01:24:32,669 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1170 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:32,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 17 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 01:24:32,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2023-03-31 01:24:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 4448. [2023-03-31 01:24:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 3394 states have (on average 1.4746611667648792) internal successors, (5005), 3660 states have internal predecessors, (5005), 577 states have call successors, (577), 379 states have call predecessors, (577), 476 states have return successors, (963), 581 states have call predecessors, (963), 573 states have call successors, (963) [2023-03-31 01:24:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6545 transitions. [2023-03-31 01:24:33,462 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6545 transitions. Word has length 106 [2023-03-31 01:24:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:33,463 INFO L495 AbstractCegarLoop]: Abstraction has 4448 states and 6545 transitions. [2023-03-31 01:24:33,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:33,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6545 transitions. [2023-03-31 01:24:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:33,470 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:33,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:24:33,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:33,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:33,471 INFO L85 PathProgramCache]: Analyzing trace with hash 868600251, now seen corresponding path program 1 times [2023-03-31 01:24:33,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:33,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499606504] [2023-03-31 01:24:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:33,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:33,735 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 01:24:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499606504] [2023-03-31 01:24:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499606504] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:33,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:33,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:33,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879129113] [2023-03-31 01:24:33,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:33,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:33,737 INFO L87 Difference]: Start difference. First operand 4448 states and 6545 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:38,520 INFO L93 Difference]: Finished difference Result 18123 states and 27617 transitions. [2023-03-31 01:24:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:38,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 106 [2023-03-31 01:24:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:38,607 INFO L225 Difference]: With dead ends: 18123 [2023-03-31 01:24:38,607 INFO L226 Difference]: Without dead ends: 14075 [2023-03-31 01:24:38,630 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 01:24:38,631 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1223 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:38,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 16 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 01:24:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14075 states. [2023-03-31 01:24:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14075 to 10854. [2023-03-31 01:24:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10854 states, 8298 states have (on average 1.4466136418414075) internal successors, (12004), 8925 states have internal predecessors, (12004), 1336 states have call successors, (1336), 959 states have call predecessors, (1336), 1219 states have return successors, (2618), 1356 states have call predecessors, (2618), 1332 states have call successors, (2618) [2023-03-31 01:24:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10854 states to 10854 states and 15958 transitions. [2023-03-31 01:24:40,882 INFO L78 Accepts]: Start accepts. Automaton has 10854 states and 15958 transitions. Word has length 106 [2023-03-31 01:24:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:40,882 INFO L495 AbstractCegarLoop]: Abstraction has 10854 states and 15958 transitions. [2023-03-31 01:24:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 10854 states and 15958 transitions. [2023-03-31 01:24:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:40,890 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:40,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:40,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:24:40,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:40,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1707633913, now seen corresponding path program 1 times [2023-03-31 01:24:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:40,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563362063] [2023-03-31 01:24:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:41,130 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 01:24:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563362063] [2023-03-31 01:24:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563362063] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:41,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:41,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:41,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851519603] [2023-03-31 01:24:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:41,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:41,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:41,132 INFO L87 Difference]: Start difference. First operand 10854 states and 15958 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:48,521 INFO L93 Difference]: Finished difference Result 44798 states and 68915 transitions. [2023-03-31 01:24:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 106 [2023-03-31 01:24:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:48,685 INFO L225 Difference]: With dead ends: 44798 [2023-03-31 01:24:48,685 INFO L226 Difference]: Without dead ends: 34605 [2023-03-31 01:24:48,735 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 01:24:48,737 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1208 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:48,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 16 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-31 01:24:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34605 states. [2023-03-31 01:24:52,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34605 to 28433. [2023-03-31 01:24:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28433 states, 21860 states have (on average 1.4467978042086003) internal successors, (31627), 23390 states have internal predecessors, (31627), 3366 states have call successors, (3366), 2649 states have call predecessors, (3366), 3206 states have return successors, (7601), 3402 states have call predecessors, (7601), 3362 states have call successors, (7601) [2023-03-31 01:24:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28433 states to 28433 states and 42594 transitions. [2023-03-31 01:24:53,195 INFO L78 Accepts]: Start accepts. Automaton has 28433 states and 42594 transitions. Word has length 106 [2023-03-31 01:24:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:53,195 INFO L495 AbstractCegarLoop]: Abstraction has 28433 states and 42594 transitions. [2023-03-31 01:24:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:24:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 28433 states and 42594 transitions. [2023-03-31 01:24:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:24:53,209 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:53,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:24:53,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:53,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1734699515, now seen corresponding path program 1 times [2023-03-31 01:24:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349214651] [2023-03-31 01:24:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:24:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:24:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:24:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:24:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:24:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:24:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-03-31 01:24:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 01:24:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:24:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:24:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:53,460 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 01:24:53,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349214651] [2023-03-31 01:24:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349214651] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916811533] [2023-03-31 01:24:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:53,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:53,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:53,462 INFO L87 Difference]: Start difference. First operand 28433 states and 42594 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 01:25:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:25:05,981 INFO L93 Difference]: Finished difference Result 107905 states and 168709 transitions. [2023-03-31 01:25:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:25:05,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 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 106 [2023-03-31 01:25:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:25:06,402 INFO L225 Difference]: With dead ends: 107905 [2023-03-31 01:25:06,402 INFO L226 Difference]: Without dead ends: 80655 [2023-03-31 01:25:06,537 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 01:25:06,539 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1600 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:25:06,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 16 Invalid, 3586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-31 01:25:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80655 states.