/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.06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:29:02,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:29:02,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:29:02,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:29:02,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:29:02,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:29:02,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:29:02,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:29:02,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:29:02,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:29:02,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:29:02,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:29:02,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:29:02,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:29:02,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:29:02,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:29:02,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:29:02,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:29:02,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:29:02,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:29:02,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:29:02,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:29:02,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:29:02,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:29:02,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:29:02,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:29:02,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:29:02,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:29:02,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:29:02,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:29:02,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:29:02,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:29:02,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:29:02,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:29:02,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:29:02,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:29:02,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:29:02,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:29:02,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:29:02,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:29:02,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:29:02,337 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 01:29:02,362 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:29:02,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:29:02,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:29:02,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:29:02,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:29:02,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:29:02,364 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:29:02,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:29:02,364 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:29:02,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:29:02,365 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:29:02,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:29:02,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:29:02,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:29:02,365 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:29:02,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:29:02,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:29:02,365 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:29:02,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:29:02,366 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:29:02,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:29:02,367 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:29:02,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:29:02,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:29:02,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:29:02,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:29:02,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:29:02,368 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:29:02,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:29:02,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:29:02,368 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:29:02,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:29:02,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:29:02,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:29:02,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:29:02,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:29:02,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:29:02,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:29:02,617 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:29:02,617 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:29:02,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.06.cil.c [2023-04-03 01:29:03,749 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:29:03,902 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:29:03,903 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.06.cil.c [2023-04-03 01:29:03,914 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18a183e9/312aed572de840ecb92013393a47f2ce/FLAG6d21736cc [2023-04-03 01:29:03,925 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18a183e9/312aed572de840ecb92013393a47f2ce [2023-04-03 01:29:03,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:29:03,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:29:03,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:29:03,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:29:03,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:29:03,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:29:03" (1/1) ... [2023-04-03 01:29:03,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed4e5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:03, skipping insertion in model container [2023-04-03 01:29:03,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:29:03" (1/1) ... [2023-04-03 01:29:03,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:29:03,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:29:04,047 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.06.cil.c[706,719] [2023-04-03 01:29:04,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:29:04,112 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:29:04,119 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.06.cil.c[706,719] [2023-04-03 01:29:04,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:29:04,159 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:29:04,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04 WrapperNode [2023-04-03 01:29:04,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:29:04,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:29:04,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:29:04,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:29:04,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:29:04,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:29:04,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:29:04,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:29:04,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (1/1) ... [2023-04-03 01:29:04,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:29:04,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:29:04,256 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 01:29:04,265 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 01:29:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2023-04-03 01:29:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-03 01:29:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-03 01:29:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:29:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:29:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:29:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:29:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:29:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:29:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-03 01:29:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-03 01:29:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:29:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:29:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:29:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:29:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:29:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:29:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:29:04,395 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:29:04,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:29:04,852 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:29:05,024 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:29:05,024 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-03 01:29:05,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:29:05 BoogieIcfgContainer [2023-04-03 01:29:05,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:29:05,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:29:05,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:29:05,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:29:05,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:29:03" (1/3) ... [2023-04-03 01:29:05,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495426b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:29:05, skipping insertion in model container [2023-04-03 01:29:05,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:04" (2/3) ... [2023-04-03 01:29:05,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495426b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:29:05, skipping insertion in model container [2023-04-03 01:29:05,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:29:05" (3/3) ... [2023-04-03 01:29:05,037 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2023-04-03 01:29:05,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:29:05,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:29:05,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:29:05,111 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;@371821df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:29:05,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:29:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 116 states have (on average 1.4310344827586208) internal successors, (166), 127 states have internal predecessors, (166), 43 states have call successors, (43), 30 states have call predecessors, (43), 30 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-03 01:29:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 01:29:05,125 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:05,125 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] [2023-04-03 01:29:05,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:05,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash -666454085, now seen corresponding path program 1 times [2023-04-03 01:29:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:05,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024637998] [2023-04-03 01:29:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:05,661 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 01:29:05,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:05,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024637998] [2023-04-03 01:29:05,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024637998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:05,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 01:29:05,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233326379] [2023-04-03 01:29:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:05,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 01:29:05,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:05,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 01:29:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:29:05,697 INFO L87 Difference]: Start difference. First operand has 191 states, 116 states have (on average 1.4310344827586208) internal successors, (166), 127 states have internal predecessors, (166), 43 states have call successors, (43), 30 states have call predecessors, (43), 30 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:06,164 INFO L93 Difference]: Finished difference Result 531 states and 743 transitions. [2023-04-03 01:29:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 01:29:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 96 [2023-04-03 01:29:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:06,178 INFO L225 Difference]: With dead ends: 531 [2023-04-03 01:29:06,182 INFO L226 Difference]: Without dead ends: 344 [2023-04-03 01:29:06,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:29:06,191 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 428 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:06,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 611 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 01:29:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-04-03 01:29:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 340. [2023-04-03 01:29:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 214 states have (on average 1.3785046728971964) internal successors, (295), 230 states have internal predecessors, (295), 75 states have call successors, (75), 54 states have call predecessors, (75), 50 states have return successors, (73), 71 states have call predecessors, (73), 72 states have call successors, (73) [2023-04-03 01:29:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 443 transitions. [2023-04-03 01:29:06,267 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 443 transitions. Word has length 96 [2023-04-03 01:29:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:06,267 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 443 transitions. [2023-04-03 01:29:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 443 transitions. [2023-04-03 01:29:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 01:29:06,270 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:06,270 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] [2023-04-03 01:29:06,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:29:06,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:06,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1465533948, now seen corresponding path program 1 times [2023-04-03 01:29:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868394968] [2023-04-03 01:29:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:06,554 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 01:29:06,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868394968] [2023-04-03 01:29:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868394968] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:06,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262716633] [2023-04-03 01:29:06,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:06,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:06,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:06,559 INFO L87 Difference]: Start difference. First operand 340 states and 443 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-03 01:29:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:07,496 INFO L93 Difference]: Finished difference Result 1445 states and 2001 transitions. [2023-04-03 01:29:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:07,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 96 [2023-04-03 01:29:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:07,506 INFO L225 Difference]: With dead ends: 1445 [2023-04-03 01:29:07,506 INFO L226 Difference]: Without dead ends: 1090 [2023-04-03 01:29:07,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:07,512 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 1364 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:07,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1264 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:29:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2023-04-03 01:29:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1039. [2023-04-03 01:29:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 682 states have (on average 1.3768328445747802) internal successors, (939), 722 states have internal predecessors, (939), 202 states have call successors, (202), 155 states have call predecessors, (202), 154 states have return successors, (239), 210 states have call predecessors, (239), 198 states have call successors, (239) [2023-04-03 01:29:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1380 transitions. [2023-04-03 01:29:07,592 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1380 transitions. Word has length 96 [2023-04-03 01:29:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:07,593 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1380 transitions. [2023-04-03 01:29:07,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-03 01:29:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1380 transitions. [2023-04-03 01:29:07,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 01:29:07,595 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:07,595 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] [2023-04-03 01:29:07,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:29:07,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:07,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash 287559387, now seen corresponding path program 1 times [2023-04-03 01:29:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010154902] [2023-04-03 01:29:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:07,786 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 01:29:07,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:07,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010154902] [2023-04-03 01:29:07,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010154902] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:07,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:07,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:07,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999682887] [2023-04-03 01:29:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:07,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:07,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:07,788 INFO L87 Difference]: Start difference. First operand 1039 states and 1380 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-03 01:29:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:08,648 INFO L93 Difference]: Finished difference Result 4204 states and 6023 transitions. [2023-04-03 01:29:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:08,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 96 [2023-04-03 01:29:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:08,664 INFO L225 Difference]: With dead ends: 4204 [2023-04-03 01:29:08,665 INFO L226 Difference]: Without dead ends: 3103 [2023-04-03 01:29:08,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:08,678 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1354 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:08,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1265 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:29:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2023-04-03 01:29:08,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 2948. [2023-04-03 01:29:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 1980 states have (on average 1.3833333333333333) internal successors, (2739), 2092 states have internal predecessors, (2739), 526 states have call successors, (526), 422 states have call predecessors, (526), 441 states have return successors, (737), 582 states have call predecessors, (737), 518 states have call successors, (737) [2023-04-03 01:29:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 4002 transitions. [2023-04-03 01:29:08,849 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 4002 transitions. Word has length 96 [2023-04-03 01:29:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:08,850 INFO L495 AbstractCegarLoop]: Abstraction has 2948 states and 4002 transitions. [2023-04-03 01:29:08,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-03 01:29:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 4002 transitions. [2023-04-03 01:29:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 01:29:08,856 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:08,856 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] [2023-04-03 01:29:08,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:29:08,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:08,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash -743771428, now seen corresponding path program 1 times [2023-04-03 01:29:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192615149] [2023-04-03 01:29:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:09,040 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 01:29:09,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:09,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192615149] [2023-04-03 01:29:09,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192615149] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:09,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:09,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:09,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435727289] [2023-04-03 01:29:09,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:09,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:09,045 INFO L87 Difference]: Start difference. First operand 2948 states and 4002 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-03 01:29:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:10,249 INFO L93 Difference]: Finished difference Result 11669 states and 17334 transitions. [2023-04-03 01:29:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:10,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 96 [2023-04-03 01:29:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:10,289 INFO L225 Difference]: With dead ends: 11669 [2023-04-03 01:29:10,289 INFO L226 Difference]: Without dead ends: 8526 [2023-04-03 01:29:10,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:10,317 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1338 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:10,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 1266 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:29:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2023-04-03 01:29:10,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 7847. [2023-04-03 01:29:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7847 states, 5337 states have (on average 1.3908562863031666) internal successors, (7423), 5646 states have internal predecessors, (7423), 1318 states have call successors, (1318), 1082 states have call predecessors, (1318), 1191 states have return successors, (2190), 1540 states have call predecessors, (2190), 1296 states have call successors, (2190) [2023-04-03 01:29:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 10931 transitions. [2023-04-03 01:29:10,781 INFO L78 Accepts]: Start accepts. Automaton has 7847 states and 10931 transitions. Word has length 96 [2023-04-03 01:29:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:10,782 INFO L495 AbstractCegarLoop]: Abstraction has 7847 states and 10931 transitions. [2023-04-03 01:29:10,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-03 01:29:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7847 states and 10931 transitions. [2023-04-03 01:29:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 01:29:10,786 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:10,786 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] [2023-04-03 01:29:10,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:29:10,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:10,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1617249123, now seen corresponding path program 1 times [2023-04-03 01:29:10,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:10,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884717994] [2023-04-03 01:29:10,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:10,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:10,982 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 01:29:10,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884717994] [2023-04-03 01:29:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884717994] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:10,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:10,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759962299] [2023-04-03 01:29:10,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:10,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:10,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:10,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:10,984 INFO L87 Difference]: Start difference. First operand 7847 states and 10931 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:12,668 INFO L93 Difference]: Finished difference Result 27627 states and 43443 transitions. [2023-04-03 01:29:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:12,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 96 [2023-04-03 01:29:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:12,788 INFO L225 Difference]: With dead ends: 27627 [2023-04-03 01:29:12,788 INFO L226 Difference]: Without dead ends: 19797 [2023-04-03 01:29:12,845 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 01:29:12,845 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 962 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:12,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 598 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:29:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19797 states. [2023-04-03 01:29:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19797 to 18108. [2023-04-03 01:29:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18108 states, 12326 states have (on average 1.4177348693817946) internal successors, (17475), 13417 states have internal predecessors, (17475), 3162 states have call successors, (3162), 2030 states have call predecessors, (3162), 2619 states have return successors, (7460), 3876 states have call predecessors, (7460), 3121 states have call successors, (7460) [2023-04-03 01:29:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18108 states to 18108 states and 28097 transitions. [2023-04-03 01:29:14,381 INFO L78 Accepts]: Start accepts. Automaton has 18108 states and 28097 transitions. Word has length 96 [2023-04-03 01:29:14,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:14,382 INFO L495 AbstractCegarLoop]: Abstraction has 18108 states and 28097 transitions. [2023-04-03 01:29:14,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 18108 states and 28097 transitions. [2023-04-03 01:29:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-03 01:29:14,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:14,383 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] [2023-04-03 01:29:14,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:29:14,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:14,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:14,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1483536023, now seen corresponding path program 1 times [2023-04-03 01:29:14,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:14,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291434499] [2023-04-03 01:29:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:14,581 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 01:29:14,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:14,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291434499] [2023-04-03 01:29:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291434499] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:14,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:14,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:14,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409629655] [2023-04-03 01:29:14,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:14,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:14,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:14,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:14,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:14,583 INFO L87 Difference]: Start difference. First operand 18108 states and 28097 transitions. Second operand has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:17,451 INFO L93 Difference]: Finished difference Result 50032 states and 87240 transitions. [2023-04-03 01:29:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:17,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2023-04-03 01:29:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:17,627 INFO L225 Difference]: With dead ends: 50032 [2023-04-03 01:29:17,627 INFO L226 Difference]: Without dead ends: 31941 [2023-04-03 01:29:17,758 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 01:29:17,760 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 933 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:17,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 674 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 01:29:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31941 states. [2023-04-03 01:29:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31941 to 29598. [2023-04-03 01:29:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29598 states, 20228 states have (on average 1.4448783863950958) internal successors, (29227), 22568 states have internal predecessors, (29227), 5342 states have call successors, (5342), 2874 states have call predecessors, (5342), 4027 states have return successors, (15581), 6414 states have call predecessors, (15581), 5291 states have call successors, (15581) [2023-04-03 01:29:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29598 states to 29598 states and 50150 transitions. [2023-04-03 01:29:20,149 INFO L78 Accepts]: Start accepts. Automaton has 29598 states and 50150 transitions. Word has length 97 [2023-04-03 01:29:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:20,151 INFO L495 AbstractCegarLoop]: Abstraction has 29598 states and 50150 transitions. [2023-04-03 01:29:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 29598 states and 50150 transitions. [2023-04-03 01:29:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 01:29:20,153 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:20,154 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] [2023-04-03 01:29:20,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 01:29:20,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:20,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash -34559458, now seen corresponding path program 1 times [2023-04-03 01:29:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:20,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406504364] [2023-04-03 01:29:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:20,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:20,642 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 01:29:20,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406504364] [2023-04-03 01:29:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406504364] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:20,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:20,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741071599] [2023-04-03 01:29:20,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:20,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:20,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:20,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:20,645 INFO L87 Difference]: Start difference. First operand 29598 states and 50150 transitions. Second operand has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:25,360 INFO L93 Difference]: Finished difference Result 83619 states and 163564 transitions. [2023-04-03 01:29:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:25,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 98 [2023-04-03 01:29:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:25,700 INFO L225 Difference]: With dead ends: 83619 [2023-04-03 01:29:25,700 INFO L226 Difference]: Without dead ends: 54038 [2023-04-03 01:29:26,427 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 01:29:26,428 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 926 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:26,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 617 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:29:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54038 states. [2023-04-03 01:29:30,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54038 to 50167. [2023-04-03 01:29:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50167 states, 34615 states have (on average 1.4691607684529828) internal successors, (50855), 39546 states have internal predecessors, (50855), 9210 states have call successors, (9210), 4104 states have call predecessors, (9210), 6341 states have return successors, (34096), 10820 states have call predecessors, (34096), 9147 states have call successors, (34096) [2023-04-03 01:29:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50167 states to 50167 states and 94161 transitions. [2023-04-03 01:29:31,572 INFO L78 Accepts]: Start accepts. Automaton has 50167 states and 94161 transitions. Word has length 98 [2023-04-03 01:29:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:31,572 INFO L495 AbstractCegarLoop]: Abstraction has 50167 states and 94161 transitions. [2023-04-03 01:29:31,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 50167 states and 94161 transitions. [2023-04-03 01:29:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-03 01:29:31,574 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:31,574 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] [2023-04-03 01:29:31,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 01:29:31,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:31,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -185451576, now seen corresponding path program 1 times [2023-04-03 01:29:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671191484] [2023-04-03 01:29:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:31,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:31,788 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 01:29:31,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:31,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671191484] [2023-04-03 01:29:31,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671191484] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:31,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:31,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:31,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315111622] [2023-04-03 01:29:31,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:31,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:31,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:31,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:31,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:31,790 INFO L87 Difference]: Start difference. First operand 50167 states and 94161 transitions. Second operand has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:41,753 INFO L93 Difference]: Finished difference Result 143794 states and 322063 transitions. [2023-04-03 01:29:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:41,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2023-04-03 01:29:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:42,639 INFO L225 Difference]: With dead ends: 143794 [2023-04-03 01:29:42,639 INFO L226 Difference]: Without dead ends: 93644 [2023-04-03 01:29:43,188 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 01:29:43,190 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 932 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:43,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 631 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 01:29:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93644 states. [2023-04-03 01:29:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93644 to 87533. [2023-04-03 01:29:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87533 states, 61100 states have (on average 1.4860556464811785) internal successors, (90798), 71236 states have internal predecessors, (90798), 16407 states have call successors, (16407), 5787 states have call predecessors, (16407), 10025 states have return successors, (77471), 18864 states have call predecessors, (77471), 16330 states have call successors, (77471) [2023-04-03 01:29:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87533 states to 87533 states and 184676 transitions. [2023-04-03 01:29:54,164 INFO L78 Accepts]: Start accepts. Automaton has 87533 states and 184676 transitions. Word has length 99 [2023-04-03 01:29:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:54,166 INFO L495 AbstractCegarLoop]: Abstraction has 87533 states and 184676 transitions. [2023-04-03 01:29:54,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:29:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 87533 states and 184676 transitions. [2023-04-03 01:29:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 01:29:54,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:54,169 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] [2023-04-03 01:29:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 01:29:54,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:54,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1984506050, now seen corresponding path program 1 times [2023-04-03 01:29:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875901751] [2023-04-03 01:29:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:54,353 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 01:29:54,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875901751] [2023-04-03 01:29:54,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875901751] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:54,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:54,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:54,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115056803] [2023-04-03 01:29:54,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:54,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:54,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:54,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:54,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:54,356 INFO L87 Difference]: Start difference. First operand 87533 states and 184676 transitions. Second operand has 9 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-03 01:30:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:30:30,859 INFO L93 Difference]: Finished difference Result 361076 states and 1118262 transitions. [2023-04-03 01:30:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:30:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 100 [2023-04-03 01:30:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:30:34,430 INFO L225 Difference]: With dead ends: 361076 [2023-04-03 01:30:34,430 INFO L226 Difference]: Without dead ends: 273560 [2023-04-03 01:30:37,415 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 01:30:37,415 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 924 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:30:37,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 615 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:30:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273560 states.