/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/systemc/transmitter.05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:28:47,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:28:47,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:28:47,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:28:47,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:28:47,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:28:47,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:28:47,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:28:47,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:28:47,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:28:47,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:28:47,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:28:47,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:28:47,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:28:47,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:28:47,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:28:47,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:28:47,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:28:47,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:28:47,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:28:47,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:28:47,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:28:47,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:28:47,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:28:47,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:28:47,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:28:47,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:28:47,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:28:47,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:28:47,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:28:47,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:28:47,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:28:47,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:28:47,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:28:47,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:28:47,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:28:47,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:28:47,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:28:47,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:28:47,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:28:47,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:28:47,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:28:47,284 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:28:47,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:28:47,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:28:47,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:28:47,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:28:47,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:28:47,287 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:28:47,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:28:47,287 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:28:47,287 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:28:47,288 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:28:47,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:28:47,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:28:47,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:28:47,288 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:28:47,288 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:28:47,288 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:28:47,289 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:28:47,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:28:47,289 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:28:47,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:28:47,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:28:47,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:28:47,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:28:47,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:28:47,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:28:47,291 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:28:47,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:28:47,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:28:47,292 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:28:47,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:28:47,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:28:47,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:28:47,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:28:47,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:28:47,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:28:47,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:28:47,539 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:28:47,540 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:28:47,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.05.cil.c [2023-04-03 01:28:48,760 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:28:48,995 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:28:48,996 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.05.cil.c [2023-04-03 01:28:49,005 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e52b0c20/94d85b57361945b7b8effdea54d54c28/FLAG7ae6b4415 [2023-04-03 01:28:49,019 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e52b0c20/94d85b57361945b7b8effdea54d54c28 [2023-04-03 01:28:49,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:28:49,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:28:49,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:28:49,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:28:49,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:28:49,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e552c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49, skipping insertion in model container [2023-04-03 01:28:49,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:28:49,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:28:49,167 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/transmitter.05.cil.c[706,719] [2023-04-03 01:28:49,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:28:49,241 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:28:49,251 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/transmitter.05.cil.c[706,719] [2023-04-03 01:28:49,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:28:49,303 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:28:49,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49 WrapperNode [2023-04-03 01:28:49,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:28:49,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:28:49,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:28:49,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:28:49,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:28:49,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:28:49,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:28:49,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:28:49,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (1/1) ... [2023-04-03 01:28:49,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:28:49,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:28:49,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 01:28:49,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 01:28:49,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:28:49,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:28:49,432 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:28:49,432 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-03 01:28:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-03 01:28:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-03 01:28:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-03 01:28:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-03 01:28:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-03 01:28:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-03 01:28:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-03 01:28:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-03 01:28:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-03 01:28:49,436 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-03 01:28:49,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:28:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:28:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:28:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:28:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:28:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-03 01:28:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-03 01:28:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-03 01:28:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-03 01:28:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-03 01:28:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-03 01:28:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-03 01:28:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-03 01:28:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-03 01:28:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-03 01:28:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-03 01:28:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-03 01:28:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-03 01:28:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-03 01:28:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-03 01:28:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-03 01:28:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-03 01:28:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-03 01:28:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-03 01:28:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-03 01:28:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:28:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:28:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:28:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:28:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:28:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:28:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:28:49,527 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:28:49,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:28:50,105 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:28:50,332 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:28:50,332 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-04-03 01:28:50,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:28:50 BoogieIcfgContainer [2023-04-03 01:28:50,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:28:50,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:28:50,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:28:50,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:28:50,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:28:49" (1/3) ... [2023-04-03 01:28:50,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eecc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:28:50, skipping insertion in model container [2023-04-03 01:28:50,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:28:49" (2/3) ... [2023-04-03 01:28:50,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eecc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:28:50, skipping insertion in model container [2023-04-03 01:28:50,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:28:50" (3/3) ... [2023-04-03 01:28:50,346 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.c [2023-04-03 01:28:50,361 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:28:50,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:28:50,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:28:50,428 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=FINITE_AUTOMATA, 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;@19be3767, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:28:50,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:28:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 114 states have internal predecessors, (148), 40 states have call successors, (40), 28 states have call predecessors, (40), 28 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-03 01:28:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 01:28:50,445 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:28:50,446 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] [2023-04-03 01:28:50,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:28:50,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:28:50,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1912700903, now seen corresponding path program 1 times [2023-04-03 01:28:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:28:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923599660] [2023-04-03 01:28:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:28:50,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:28:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:28:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:28:51,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:28:51,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923599660] [2023-04-03 01:28:51,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923599660] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:28:51,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:28:51,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:28:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363402007] [2023-04-03 01:28:51,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:28:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:28:51,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:28:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:28:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:28:51,208 INFO L87 Difference]: Start difference. First operand has 174 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 114 states have internal predecessors, (148), 40 states have call successors, (40), 28 states have call predecessors, (40), 28 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-03 01:28:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:28:52,601 INFO L93 Difference]: Finished difference Result 1366 states and 2038 transitions. [2023-04-03 01:28:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 01:28:52,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 88 [2023-04-03 01:28:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:28:52,634 INFO L225 Difference]: With dead ends: 1366 [2023-04-03 01:28:52,635 INFO L226 Difference]: Without dead ends: 1160 [2023-04-03 01:28:52,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:28:52,653 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1610 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:28:52,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1625 Valid, 1191 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 01:28:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2023-04-03 01:28:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1127. [2023-04-03 01:28:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 719 states have (on average 1.3755215577190543) internal successors, (989), 768 states have internal predecessors, (989), 239 states have call successors, (239), 180 states have call predecessors, (239), 168 states have return successors, (358), 225 states have call predecessors, (358), 236 states have call successors, (358) [2023-04-03 01:28:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1586 transitions. [2023-04-03 01:28:52,860 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1586 transitions. Word has length 88 [2023-04-03 01:28:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:28:52,861 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1586 transitions. [2023-04-03 01:28:52,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-03 01:28:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1586 transitions. [2023-04-03 01:28:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 01:28:52,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:28:52,871 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] [2023-04-03 01:28:52,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:28:52,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:28:52,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:28:52,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1240619000, now seen corresponding path program 1 times [2023-04-03 01:28:52,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:28:52,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938746824] [2023-04-03 01:28:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:28:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:28:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:28:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:28:53,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:28:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938746824] [2023-04-03 01:28:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938746824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:28:53,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:28:53,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:28:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381696072] [2023-04-03 01:28:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:28:53,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:28:53,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:28:53,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:28:53,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:28:53,223 INFO L87 Difference]: Start difference. First operand 1127 states and 1586 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-03 01:28:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:28:54,513 INFO L93 Difference]: Finished difference Result 4877 states and 7623 transitions. [2023-04-03 01:28:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 01:28:54,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 88 [2023-04-03 01:28:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:28:54,537 INFO L225 Difference]: With dead ends: 4877 [2023-04-03 01:28:54,537 INFO L226 Difference]: Without dead ends: 3700 [2023-04-03 01:28:54,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:28:54,548 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1494 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 01:28:54,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1193 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 01:28:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2023-04-03 01:28:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3482. [2023-04-03 01:28:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 2269 states have (on average 1.379462318201851) internal successors, (3130), 2418 states have internal predecessors, (3130), 690 states have call successors, (690), 540 states have call predecessors, (690), 522 states have return successors, (1265), 675 states have call predecessors, (1265), 685 states have call successors, (1265) [2023-04-03 01:28:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5085 transitions. [2023-04-03 01:28:54,867 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5085 transitions. Word has length 88 [2023-04-03 01:28:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:28:54,867 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 5085 transitions. [2023-04-03 01:28:54,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-03 01:28:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5085 transitions. [2023-04-03 01:28:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 01:28:54,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:28:54,871 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] [2023-04-03 01:28:54,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:28:54,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:28:54,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:28:54,872 INFO L85 PathProgramCache]: Analyzing trace with hash -860222215, now seen corresponding path program 1 times [2023-04-03 01:28:54,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:28:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412049977] [2023-04-03 01:28:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:28:54,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:28:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:28:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:28:55,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:28:55,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412049977] [2023-04-03 01:28:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412049977] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:28:55,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:28:55,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:28:55,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460167444] [2023-04-03 01:28:55,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:28:55,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:28:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:28:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:28:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:28:55,225 INFO L87 Difference]: Start difference. First operand 3482 states and 5085 transitions. Second operand has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-03 01:28:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:28:56,695 INFO L93 Difference]: Finished difference Result 11945 states and 19488 transitions. [2023-04-03 01:28:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:28:56,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 88 [2023-04-03 01:28:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:28:56,772 INFO L225 Difference]: With dead ends: 11945 [2023-04-03 01:28:56,772 INFO L226 Difference]: Without dead ends: 8480 [2023-04-03 01:28:56,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:28:56,815 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 683 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:28:56,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 684 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:28:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8480 states. [2023-04-03 01:28:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8480 to 8005. [2023-04-03 01:28:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 5252 states have (on average 1.414889565879665) internal successors, (7431), 5802 states have internal predecessors, (7431), 1626 states have call successors, (1626), 1015 states have call predecessors, (1626), 1126 states have return successors, (3759), 1667 states have call predecessors, (3759), 1619 states have call successors, (3759) [2023-04-03 01:28:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 12816 transitions. [2023-04-03 01:28:57,571 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 12816 transitions. Word has length 88 [2023-04-03 01:28:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:28:57,571 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 12816 transitions. [2023-04-03 01:28:57,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-03 01:28:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 12816 transitions. [2023-04-03 01:28:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-03 01:28:57,573 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:28:57,573 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] [2023-04-03 01:28:57,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:28:57,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:28:57,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:28:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2071173823, now seen corresponding path program 1 times [2023-04-03 01:28:57,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:28:57,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519278135] [2023-04-03 01:28:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:28:57,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:28:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:28:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:28:57,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:28:57,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519278135] [2023-04-03 01:28:57,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519278135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:28:57,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:28:57,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:28:57,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118703966] [2023-04-03 01:28:57,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:28:57,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:28:57,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:28:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:28:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:28:57,852 INFO L87 Difference]: Start difference. First operand 8005 states and 12816 transitions. Second operand has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-03 01:28:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:28:59,818 INFO L93 Difference]: Finished difference Result 21359 states and 37284 transitions. [2023-04-03 01:28:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:28:59,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 89 [2023-04-03 01:28:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:28:59,922 INFO L225 Difference]: With dead ends: 21359 [2023-04-03 01:28:59,922 INFO L226 Difference]: Without dead ends: 13371 [2023-04-03 01:28:59,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:28:59,993 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 833 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:28:59,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 562 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:29:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13371 states. [2023-04-03 01:29:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13371 to 12480. [2023-04-03 01:29:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12480 states, 8229 states have (on average 1.4236237695953335) internal successors, (11715), 9242 states have internal predecessors, (11715), 2551 states have call successors, (2551), 1410 states have call predecessors, (2551), 1699 states have return successors, (6843), 2656 states have call predecessors, (6843), 2542 states have call successors, (6843) [2023-04-03 01:29:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12480 states to 12480 states and 21109 transitions. [2023-04-03 01:29:01,599 INFO L78 Accepts]: Start accepts. Automaton has 12480 states and 21109 transitions. Word has length 89 [2023-04-03 01:29:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:01,600 INFO L495 AbstractCegarLoop]: Abstraction has 12480 states and 21109 transitions. [2023-04-03 01:29:01,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-03 01:29:01,601 INFO L276 IsEmpty]: Start isEmpty. Operand 12480 states and 21109 transitions. [2023-04-03 01:29:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-03 01:29:01,607 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:01,607 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] [2023-04-03 01:29:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:29:01,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:01,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1597129256, now seen corresponding path program 1 times [2023-04-03 01:29:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:01,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889663020] [2023-04-03 01:29:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:01,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889663020] [2023-04-03 01:29:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889663020] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:01,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 01:29:01,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083125325] [2023-04-03 01:29:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:01,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:29:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:29:01,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:29:01,801 INFO L87 Difference]: Start difference. First operand 12480 states and 21109 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-03 01:29:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:03,783 INFO L93 Difference]: Finished difference Result 37166 states and 69964 transitions. [2023-04-03 01:29:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:29:03,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2023-04-03 01:29:03,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:03,991 INFO L225 Difference]: With dead ends: 37166 [2023-04-03 01:29:03,991 INFO L226 Difference]: Without dead ends: 24702 [2023-04-03 01:29:04,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:29:04,115 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 176 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:04,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 362 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:29:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24702 states. [2023-04-03 01:29:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24702 to 24618. [2023-04-03 01:29:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24618 states, 16214 states have (on average 1.4110028370543974) internal successors, (22878), 18155 states have internal predecessors, (22878), 5092 states have call successors, (5092), 2814 states have call predecessors, (5092), 3311 states have return successors, (15361), 5101 states have call predecessors, (15361), 5077 states have call successors, (15361) [2023-04-03 01:29:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24618 states to 24618 states and 43331 transitions. [2023-04-03 01:29:07,094 INFO L78 Accepts]: Start accepts. Automaton has 24618 states and 43331 transitions. Word has length 90 [2023-04-03 01:29:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:07,095 INFO L495 AbstractCegarLoop]: Abstraction has 24618 states and 43331 transitions. [2023-04-03 01:29:07,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-03 01:29:07,096 INFO L276 IsEmpty]: Start isEmpty. Operand 24618 states and 43331 transitions. [2023-04-03 01:29:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 01:29:07,099 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:07,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:29:07,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:29:07,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:07,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1032397653, now seen corresponding path program 1 times [2023-04-03 01:29:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078136047] [2023-04-03 01:29:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-03 01:29:07,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:07,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078136047] [2023-04-03 01:29:07,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078136047] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:07,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:07,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:07,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315382769] [2023-04-03 01:29:07,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:07,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:07,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:07,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:07,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:07,370 INFO L87 Difference]: Start difference. First operand 24618 states and 43331 transitions. Second operand has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-03 01:29:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:11,688 INFO L93 Difference]: Finished difference Result 65725 states and 133619 transitions. [2023-04-03 01:29:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:11,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 109 [2023-04-03 01:29:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:12,286 INFO L225 Difference]: With dead ends: 65725 [2023-04-03 01:29:12,286 INFO L226 Difference]: Without dead ends: 41124 [2023-04-03 01:29:12,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:29:12,701 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 825 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:12,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 546 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:29:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41124 states. [2023-04-03 01:29:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41124 to 38489. [2023-04-03 01:29:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38489 states, 25590 states have (on average 1.4199296600234466) internal successors, (36336), 29158 states have internal predecessors, (36336), 7942 states have call successors, (7942), 3838 states have call predecessors, (7942), 4956 states have return successors, (29428), 8002 states have call predecessors, (29428), 7923 states have call successors, (29428) [2023-04-03 01:29:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38489 states to 38489 states and 73706 transitions. [2023-04-03 01:29:17,401 INFO L78 Accepts]: Start accepts. Automaton has 38489 states and 73706 transitions. Word has length 109 [2023-04-03 01:29:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:17,402 INFO L495 AbstractCegarLoop]: Abstraction has 38489 states and 73706 transitions. [2023-04-03 01:29:17,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-03 01:29:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 38489 states and 73706 transitions. [2023-04-03 01:29:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 01:29:17,408 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:17,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:29:17,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 01:29:17,409 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:17,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash -209939441, now seen corresponding path program 1 times [2023-04-03 01:29:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:17,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133017947] [2023-04-03 01:29:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-03 01:29:17,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:17,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133017947] [2023-04-03 01:29:17,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133017947] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:17,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:17,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912225467] [2023-04-03 01:29:17,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:17,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:17,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:17,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:17,736 INFO L87 Difference]: Start difference. First operand 38489 states and 73706 transitions. Second operand has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-03 01:29:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:32,248 INFO L93 Difference]: Finished difference Result 150021 states and 424895 transitions. [2023-04-03 01:29:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 111 [2023-04-03 01:29:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:33,862 INFO L225 Difference]: With dead ends: 150021 [2023-04-03 01:29:33,863 INFO L226 Difference]: Without dead ends: 111549 [2023-04-03 01:29:34,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:29:34,845 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 693 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:34,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 636 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 01:29:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111549 states. [2023-04-03 01:29:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111549 to 91660. [2023-04-03 01:29:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91660 states, 61848 states have (on average 1.4256564480662268) internal successors, (88174), 71327 states have internal predecessors, (88174), 18252 states have call successors, (18252), 7428 states have call predecessors, (18252), 11559 states have return successors, (110750), 18670 states have call predecessors, (110750), 18217 states have call successors, (110750) [2023-04-03 01:29:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91660 states to 91660 states and 217176 transitions. [2023-04-03 01:29:49,103 INFO L78 Accepts]: Start accepts. Automaton has 91660 states and 217176 transitions. Word has length 111 [2023-04-03 01:29:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:49,105 INFO L495 AbstractCegarLoop]: Abstraction has 91660 states and 217176 transitions. [2023-04-03 01:29:49,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-03 01:29:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 91660 states and 217176 transitions. [2023-04-03 01:29:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 01:29:49,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:49,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:29:49,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 01:29:49,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:49,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1699589099, now seen corresponding path program 1 times [2023-04-03 01:29:49,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:49,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914432602] [2023-04-03 01:29:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-03 01:29:49,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914432602] [2023-04-03 01:29:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914432602] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128933600] [2023-04-03 01:29:49,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:49,420 INFO L87 Difference]: Start difference. First operand 91660 states and 217176 transitions. Second operand has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16)