/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 EqDomain -i ../sv-benchmarks/c/systemc/transmitter.06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:18:16,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:18:16,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:18:16,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:18:16,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:18:16,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:18:16,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:18:16,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:18:16,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:18:16,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:18:16,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:18:16,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:18:16,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:18:16,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:18:16,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:18:16,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:18:16,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:18:16,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:18:16,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:18:16,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:18:16,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:18:16,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:18:16,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:18:16,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:18:16,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:18:16,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:18:16,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:18:16,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:18:16,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:18:16,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:18:16,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:18:16,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:18:16,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:18:16,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:18:16,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:18:16,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:18:16,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:18:16,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:18:16,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:18:16,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:18:16,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:18:16,201 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 [2023-04-01 12:18:16,231 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:18:16,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:18:16,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:18:16,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:18:16,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:18:16,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:18:16,233 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:18:16,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:18:16,233 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:18:16,233 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:18:16,234 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:18:16,234 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:18:16,234 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:18:16,234 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:18:16,234 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:18:16,235 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:18:16,235 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:18:16,235 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:18:16,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:18:16,236 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:18:16,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:18:16,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:18:16,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:18:16,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:18:16,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:18:16,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:18:16,237 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:18:16,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:18:16,237 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:18:16,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:18:16,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:18:16,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:18:16,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:18:16,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:18:16,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:18:16,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:18:16,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:18:16,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:18:16,488 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:18:16,489 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:18:16,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.06.cil.c [2023-04-01 12:18:17,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:18:17,979 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:18:17,979 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.06.cil.c [2023-04-01 12:18:17,991 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936fc77e5/2c0fa539fbed441b8aeff0e2baec2946/FLAG4ee7b12b6 [2023-04-01 12:18:18,006 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936fc77e5/2c0fa539fbed441b8aeff0e2baec2946 [2023-04-01 12:18:18,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:18:18,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:18:18,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:18:18,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:18:18,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:18:18,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69006de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18, skipping insertion in model container [2023-04-01 12:18:18,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:18:18,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:18:18,220 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] [2023-04-01 12:18:18,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:18:18,337 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:18:18,346 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] [2023-04-01 12:18:18,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:18:18,418 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:18:18,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18 WrapperNode [2023-04-01 12:18:18,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:18:18,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:18:18,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:18:18,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:18:18,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,490 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:18:18,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:18:18,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:18:18,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:18:18,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (1/1) ... [2023-04-01 12:18:18,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:18:18,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:18:18,544 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) [2023-04-01 12:18:18,551 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 [2023-04-01 12:18:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:18:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:18:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:18:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-01 12:18:18,583 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-01 12:18:18,584 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-01 12:18:18,584 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-01 12:18:18,584 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-01 12:18:18,584 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-01 12:18:18,585 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-01 12:18:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-01 12:18:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-01 12:18:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-01 12:18:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-01 12:18:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-01 12:18:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-01 12:18:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-01 12:18:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-01 12:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-01 12:18:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-01 12:18:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-01 12:18:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-01 12:18:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2023-04-01 12:18:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-01 12:18:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-01 12:18:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-01 12:18:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-01 12:18:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-01 12:18:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-01 12:18:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-01 12:18:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2023-04-01 12:18:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-01 12:18:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-01 12:18:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-01 12:18:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-01 12:18:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-01 12:18:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-01 12:18:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-01 12:18:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-01 12:18:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-01 12:18:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-01 12:18:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-01 12:18:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-01 12:18:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:18:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:18:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:18:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:18:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:18:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:18:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:18:18,734 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:18:18,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:18:19,291 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:18:19,519 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:18:19,520 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-01 12:18:19,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:18:19 BoogieIcfgContainer [2023-04-01 12:18:19,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:18:19,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:18:19,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:18:19,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:18:19,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:18:18" (1/3) ... [2023-04-01 12:18:19,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ff064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:18:19, skipping insertion in model container [2023-04-01 12:18:19,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:18" (2/3) ... [2023-04-01 12:18:19,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ff064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:18:19, skipping insertion in model container [2023-04-01 12:18:19,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:18:19" (3/3) ... [2023-04-01 12:18:19,529 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2023-04-01 12:18:19,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:18:19,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:18:19,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:18:19,592 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;@2d04e51c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:18:19,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:18:19,599 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) [2023-04-01 12:18:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:18:19,613 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:19,614 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] [2023-04-01 12:18:19,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:19,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash -666454085, now seen corresponding path program 1 times [2023-04-01 12:18:19,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:19,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098335868] [2023-04-01 12:18:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:20,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:20,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098335868] [2023-04-01 12:18:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098335868] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:20,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 12:18:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451416440] [2023-04-01 12:18:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:20,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 12:18:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 12:18:20,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 12:18:20,361 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) [2023-04-01 12:18:20,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:20,834 INFO L93 Difference]: Finished difference Result 531 states and 743 transitions. [2023-04-01 12:18:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 12:18:20,837 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 [2023-04-01 12:18:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:20,858 INFO L225 Difference]: With dead ends: 531 [2023-04-01 12:18:20,863 INFO L226 Difference]: Without dead ends: 344 [2023-04-01 12:18:20,872 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 [2023-04-01 12:18:20,877 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, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:20,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 611 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:18:20,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-04-01 12:18:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 340. [2023-04-01 12:18:20,973 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) [2023-04-01 12:18:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 443 transitions. [2023-04-01 12:18:20,980 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 443 transitions. Word has length 96 [2023-04-01 12:18:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:20,981 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 443 transitions. [2023-04-01 12:18:20,981 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) [2023-04-01 12:18:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 443 transitions. [2023-04-01 12:18:20,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:18:20,992 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:20,992 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] [2023-04-01 12:18:20,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:18:20,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:20,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1465533948, now seen corresponding path program 1 times [2023-04-01 12:18:20,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:20,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641199974] [2023-04-01 12:18:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:20,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:21,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:21,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641199974] [2023-04-01 12:18:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641199974] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:21,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:21,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461790206] [2023-04-01 12:18:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:21,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:21,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:21,366 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) [2023-04-01 12:18:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:22,380 INFO L93 Difference]: Finished difference Result 1445 states and 2001 transitions. [2023-04-01 12:18:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:22,381 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 [2023-04-01 12:18:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:22,391 INFO L225 Difference]: With dead ends: 1445 [2023-04-01 12:18:22,391 INFO L226 Difference]: Without dead ends: 1090 [2023-04-01 12:18:22,397 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 [2023-04-01 12:18:22,399 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 1365 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:22,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1264 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:18:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2023-04-01 12:18:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1039. [2023-04-01 12:18:22,500 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) [2023-04-01 12:18:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1380 transitions. [2023-04-01 12:18:22,507 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1380 transitions. Word has length 96 [2023-04-01 12:18:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:22,507 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1380 transitions. [2023-04-01 12:18:22,508 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) [2023-04-01 12:18:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1380 transitions. [2023-04-01 12:18:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:18:22,510 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:22,511 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] [2023-04-01 12:18:22,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:18:22,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:22,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 287559387, now seen corresponding path program 1 times [2023-04-01 12:18:22,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:22,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412236151] [2023-04-01 12:18:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:22,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:22,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412236151] [2023-04-01 12:18:22,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412236151] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:22,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069092988] [2023-04-01 12:18:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:22,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:22,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:22,756 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) [2023-04-01 12:18:23,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:23,799 INFO L93 Difference]: Finished difference Result 4204 states and 6023 transitions. [2023-04-01 12:18:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:23,799 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 [2023-04-01 12:18:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:23,822 INFO L225 Difference]: With dead ends: 4204 [2023-04-01 12:18:23,823 INFO L226 Difference]: Without dead ends: 3103 [2023-04-01 12:18:23,833 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 [2023-04-01 12:18:23,837 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1354 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:23,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1265 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:18:23,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2023-04-01 12:18:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 2948. [2023-04-01 12:18:24,082 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) [2023-04-01 12:18:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 4002 transitions. [2023-04-01 12:18:24,101 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 4002 transitions. Word has length 96 [2023-04-01 12:18:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:24,102 INFO L495 AbstractCegarLoop]: Abstraction has 2948 states and 4002 transitions. [2023-04-01 12:18:24,102 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) [2023-04-01 12:18:24,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 4002 transitions. [2023-04-01 12:18:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:18:24,103 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:24,103 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] [2023-04-01 12:18:24,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:18:24,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:24,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash -743771428, now seen corresponding path program 1 times [2023-04-01 12:18:24,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:24,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324234556] [2023-04-01 12:18:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:24,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:24,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:24,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324234556] [2023-04-01 12:18:24,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324234556] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:24,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:24,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:24,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058971839] [2023-04-01 12:18:24,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:24,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:24,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:24,342 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) [2023-04-01 12:18:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:25,942 INFO L93 Difference]: Finished difference Result 11669 states and 17334 transitions. [2023-04-01 12:18:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:25,943 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 [2023-04-01 12:18:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:25,996 INFO L225 Difference]: With dead ends: 11669 [2023-04-01 12:18:25,997 INFO L226 Difference]: Without dead ends: 8526 [2023-04-01 12:18:26,025 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 [2023-04-01 12:18:26,030 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1338 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:26,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 1266 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:18:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2023-04-01 12:18:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 7847. [2023-04-01 12:18:26,578 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) [2023-04-01 12:18:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 10931 transitions. [2023-04-01 12:18:26,636 INFO L78 Accepts]: Start accepts. Automaton has 7847 states and 10931 transitions. Word has length 96 [2023-04-01 12:18:26,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:26,636 INFO L495 AbstractCegarLoop]: Abstraction has 7847 states and 10931 transitions. [2023-04-01 12:18:26,637 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) [2023-04-01 12:18:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7847 states and 10931 transitions. [2023-04-01 12:18:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:18:26,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:26,638 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] [2023-04-01 12:18:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:18:26,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:26,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1617249123, now seen corresponding path program 1 times [2023-04-01 12:18:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874893938] [2023-04-01 12:18:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:26,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:26,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:26,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874893938] [2023-04-01 12:18:26,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874893938] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:26,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:18:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740261899] [2023-04-01 12:18:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:26,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:18:26,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:18:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:18:26,917 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) [2023-04-01 12:18:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:29,178 INFO L93 Difference]: Finished difference Result 27627 states and 43443 transitions. [2023-04-01 12:18:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:18:29,179 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 [2023-04-01 12:18:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:29,332 INFO L225 Difference]: With dead ends: 27627 [2023-04-01 12:18:29,332 INFO L226 Difference]: Without dead ends: 19797 [2023-04-01 12:18:29,402 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 [2023-04-01 12:18:29,403 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 962 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:29,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 598 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:18:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19797 states. [2023-04-01 12:18:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19797 to 18108. [2023-04-01 12:18:31,053 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) [2023-04-01 12:18:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18108 states to 18108 states and 28097 transitions. [2023-04-01 12:18:31,179 INFO L78 Accepts]: Start accepts. Automaton has 18108 states and 28097 transitions. Word has length 96 [2023-04-01 12:18:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:31,180 INFO L495 AbstractCegarLoop]: Abstraction has 18108 states and 28097 transitions. [2023-04-01 12:18:31,181 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) [2023-04-01 12:18:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 18108 states and 28097 transitions. [2023-04-01 12:18:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 12:18:31,182 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:31,182 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] [2023-04-01 12:18:31,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:18:31,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:31,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1483536023, now seen corresponding path program 1 times [2023-04-01 12:18:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:31,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230081790] [2023-04-01 12:18:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:31,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:31,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230081790] [2023-04-01 12:18:31,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230081790] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:31,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:31,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:18:31,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331763259] [2023-04-01 12:18:31,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:31,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:18:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:18:31,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:18:31,482 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) [2023-04-01 12:18:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:34,883 INFO L93 Difference]: Finished difference Result 50032 states and 87240 transitions. [2023-04-01 12:18:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:18:34,884 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 [2023-04-01 12:18:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:35,110 INFO L225 Difference]: With dead ends: 50032 [2023-04-01 12:18:35,110 INFO L226 Difference]: Without dead ends: 31941 [2023-04-01 12:18:35,402 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 [2023-04-01 12:18:35,403 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 933 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:35,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 669 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:18:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31941 states. [2023-04-01 12:18:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31941 to 29598. [2023-04-01 12:18:38,337 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) [2023-04-01 12:18:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29598 states to 29598 states and 50150 transitions. [2023-04-01 12:18:38,799 INFO L78 Accepts]: Start accepts. Automaton has 29598 states and 50150 transitions. Word has length 97 [2023-04-01 12:18:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:38,802 INFO L495 AbstractCegarLoop]: Abstraction has 29598 states and 50150 transitions. [2023-04-01 12:18:38,802 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) [2023-04-01 12:18:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 29598 states and 50150 transitions. [2023-04-01 12:18:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:18:38,805 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:38,805 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] [2023-04-01 12:18:38,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:18:38,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:38,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:38,806 INFO L85 PathProgramCache]: Analyzing trace with hash -34559458, now seen corresponding path program 1 times [2023-04-01 12:18:38,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:38,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145378287] [2023-04-01 12:18:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:38,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:39,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:39,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145378287] [2023-04-01 12:18:39,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145378287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:39,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:39,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:18:39,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657545574] [2023-04-01 12:18:39,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:39,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:18:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:39,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:18:39,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:18:39,068 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) [2023-04-01 12:18:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:44,170 INFO L93 Difference]: Finished difference Result 83619 states and 163564 transitions. [2023-04-01 12:18:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:18:44,171 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 [2023-04-01 12:18:44,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:44,581 INFO L225 Difference]: With dead ends: 83619 [2023-04-01 12:18:44,581 INFO L226 Difference]: Without dead ends: 54038 [2023-04-01 12:18:44,826 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 [2023-04-01 12:18:44,826 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 926 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:44,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 617 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:18:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54038 states. [2023-04-01 12:18:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54038 to 50167. [2023-04-01 12:18:49,991 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) [2023-04-01 12:18:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50167 states to 50167 states and 94161 transitions. [2023-04-01 12:18:50,740 INFO L78 Accepts]: Start accepts. Automaton has 50167 states and 94161 transitions. Word has length 98 [2023-04-01 12:18:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:50,740 INFO L495 AbstractCegarLoop]: Abstraction has 50167 states and 94161 transitions. [2023-04-01 12:18:50,741 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) [2023-04-01 12:18:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 50167 states and 94161 transitions. [2023-04-01 12:18:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:18:50,743 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:50,744 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] [2023-04-01 12:18:50,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:18:50,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:50,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash -185451576, now seen corresponding path program 1 times [2023-04-01 12:18:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178075758] [2023-04-01 12:18:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:18:51,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:51,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178075758] [2023-04-01 12:18:51,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178075758] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:51,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:51,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:18:51,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614460733] [2023-04-01 12:18:51,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:51,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:18:51,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:18:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:18:51,014 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) [2023-04-01 12:19:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:19:01,864 INFO L93 Difference]: Finished difference Result 143794 states and 322063 transitions. [2023-04-01 12:19:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:19:01,865 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 [2023-04-01 12:19:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:19:03,090 INFO L225 Difference]: With dead ends: 143794 [2023-04-01 12:19:03,090 INFO L226 Difference]: Without dead ends: 93644 [2023-04-01 12:19:03,867 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 [2023-04-01 12:19:03,867 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 932 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2023-04-01 12:19:03,868 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] [2023-04-01 12:19:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93644 states.