/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.12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:18:31,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:18:31,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:18:31,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:18:31,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:18:31,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:18:31,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:18:31,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:18:31,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:18:31,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:18:31,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:18:31,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:18:31,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:18:31,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:18:31,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:18:31,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:18:31,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:18:31,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:18:31,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:18:31,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:18:31,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:18:31,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:18:31,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:18:31,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:18:31,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:18:31,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:18:31,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:18:31,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:18:31,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:18:31,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:18:31,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:18:31,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:18:31,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:18:31,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:18:31,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:18:31,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:18:31,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:18:31,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:18:31,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:18:31,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:18:31,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:18:31,392 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 12:18:31,406 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:18:31,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:18:31,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:18:31,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:18:31,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:18:31,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:18:31,407 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:18:31,407 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:18:31,407 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:18:31,407 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:18:31,407 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:18:31,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:18:31,408 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:18:31,408 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:18:31,408 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:18:31,408 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:18:31,408 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:18:31,408 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:18:31,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:18:31,409 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:18:31,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:18:31,410 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:18:31,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:18:31,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:18:31,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:18:31,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:18:31,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:18:31,410 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:18:31,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:18:31,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:18:31,411 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:18:31,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:18:31,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:18:31,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:18:31,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:18:31,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:18:31,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:18:31,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:18:31,570 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:18:31,571 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:18:31,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.12.cil.c [2023-04-01 12:18:32,562 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:18:32,715 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:18:32,715 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.12.cil.c [2023-04-01 12:18:32,730 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9c729ab/896c754fefa84ae7b7111f3ea9c2a95a/FLAGa7bd8350f [2023-04-01 12:18:32,752 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9c729ab/896c754fefa84ae7b7111f3ea9c2a95a [2023-04-01 12:18:32,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:18:32,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:18:32,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:18:32,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:18:32,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:18:32,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:18:32" (1/1) ... [2023-04-01 12:18:32,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed59d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:32, skipping insertion in model container [2023-04-01 12:18:32,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:18:32" (1/1) ... [2023-04-01 12:18:32,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:18:32,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:18:32,927 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.12.cil.c[706,719] [2023-04-01 12:18:33,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:18:33,036 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:18:33,048 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.12.cil.c[706,719] [2023-04-01 12:18:33,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:18:33,100 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:18:33,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33 WrapperNode [2023-04-01 12:18:33,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:18:33,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:18:33,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:18:33,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:18:33,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:18:33,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:18:33,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:18:33,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:18:33,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (1/1) ... [2023-04-01 12:18:33,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:18:33,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:18:33,187 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 12:18:33,212 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 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-01 12:18:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-01 12:18:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-01 12:18:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-01 12:18:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:18:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:18:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:18:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2023-04-01 12:18:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2023-04-01 12:18:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-01 12:18:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-01 12:18:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:18:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:18:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:18:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:18:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:18:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:18:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:18:33,343 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:18:33,345 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:18:33,904 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:18:34,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:18:34,315 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-04-01 12:18:34,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:18:34 BoogieIcfgContainer [2023-04-01 12:18:34,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:18:34,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:18:34,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:18:34,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:18:34,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:18:32" (1/3) ... [2023-04-01 12:18:34,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feb1ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:18:34, skipping insertion in model container [2023-04-01 12:18:34,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:18:33" (2/3) ... [2023-04-01 12:18:34,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feb1ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:18:34, skipping insertion in model container [2023-04-01 12:18:34,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:18:34" (3/3) ... [2023-04-01 12:18:34,322 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.12.cil.c [2023-04-01 12:18:34,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:18:34,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:18:34,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:18:34,423 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;@1cc0e7b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:18:34,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:18:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 188 states have (on average 1.4574468085106382) internal successors, (274), 205 states have internal predecessors, (274), 61 states have call successors, (61), 42 states have call predecessors, (61), 42 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-04-01 12:18:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:18:34,443 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:34,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:34,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:34,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1509842932, now seen corresponding path program 1 times [2023-04-01 12:18:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813498914] [2023-04-01 12:18:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:34,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:35,149 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 12:18:35,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813498914] [2023-04-01 12:18:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813498914] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:35,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:35,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 12:18:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826977988] [2023-04-01 12:18:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:35,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 12:18:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:35,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 12:18:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 12:18:35,192 INFO L87 Difference]: Start difference. First operand has 293 states, 188 states have (on average 1.4574468085106382) internal successors, (274), 205 states have internal predecessors, (274), 61 states have call successors, (61), 42 states have call predecessors, (61), 42 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-04-01 12:18:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:35,839 INFO L93 Difference]: Finished difference Result 837 states and 1199 transitions. [2023-04-01 12:18:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 12:18:35,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 144 [2023-04-01 12:18:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:35,851 INFO L225 Difference]: With dead ends: 837 [2023-04-01 12:18:35,851 INFO L226 Difference]: Without dead ends: 548 [2023-04-01 12:18:35,855 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 12:18:35,857 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 704 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:35,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1019 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:18:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-04-01 12:18:35,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2023-04-01 12:18:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 358 states have (on average 1.4273743016759777) internal successors, (511), 386 states have internal predecessors, (511), 111 states have call successors, (111), 78 states have call predecessors, (111), 74 states have return successors, (109), 107 states have call predecessors, (109), 108 states have call successors, (109) [2023-04-01 12:18:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 731 transitions. [2023-04-01 12:18:35,915 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 731 transitions. Word has length 144 [2023-04-01 12:18:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:35,915 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 731 transitions. [2023-04-01 12:18:35,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-04-01 12:18:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 731 transitions. [2023-04-01 12:18:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:18:35,918 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:35,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:18:35,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:35,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2087585845, now seen corresponding path program 1 times [2023-04-01 12:18:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:35,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649756874] [2023-04-01 12:18:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:36,253 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 12:18:36,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649756874] [2023-04-01 12:18:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649756874] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:36,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947660023] [2023-04-01 12:18:36,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:36,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:36,256 INFO L87 Difference]: Start difference. First operand 544 states and 731 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:37,470 INFO L93 Difference]: Finished difference Result 2363 states and 3381 transitions. [2023-04-01 12:18:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 144 [2023-04-01 12:18:37,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:37,479 INFO L225 Difference]: With dead ends: 2363 [2023-04-01 12:18:37,479 INFO L226 Difference]: Without dead ends: 1798 [2023-04-01 12:18:37,482 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 12:18:37,482 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 2396 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:37,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2413 Valid, 2212 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [835 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:18:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2023-04-01 12:18:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1741. [2023-04-01 12:18:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1186 states have (on average 1.424114671163575) internal successors, (1689), 1256 states have internal predecessors, (1689), 316 states have call successors, (316), 239 states have call predecessors, (316), 238 states have return successors, (383), 336 states have call predecessors, (383), 312 states have call successors, (383) [2023-04-01 12:18:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2388 transitions. [2023-04-01 12:18:37,599 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2388 transitions. Word has length 144 [2023-04-01 12:18:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:37,599 INFO L495 AbstractCegarLoop]: Abstraction has 1741 states and 2388 transitions. [2023-04-01 12:18:37,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2388 transitions. [2023-04-01 12:18:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:18:37,601 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:37,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:37,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:18:37,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:37,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -756762860, now seen corresponding path program 1 times [2023-04-01 12:18:37,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117988642] [2023-04-01 12:18:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:37,858 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 12:18:37,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:37,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117988642] [2023-04-01 12:18:37,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117988642] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:37,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:37,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:37,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728274168] [2023-04-01 12:18:37,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:37,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:37,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:37,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:37,860 INFO L87 Difference]: Start difference. First operand 1741 states and 2388 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:39,142 INFO L93 Difference]: Finished difference Result 7186 states and 10643 transitions. [2023-04-01 12:18:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:39,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 144 [2023-04-01 12:18:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:39,164 INFO L225 Difference]: With dead ends: 7186 [2023-04-01 12:18:39,165 INFO L226 Difference]: Without dead ends: 5371 [2023-04-01 12:18:39,174 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 12:18:39,175 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 2386 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:39,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 2213 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:18:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2023-04-01 12:18:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 5156. [2023-04-01 12:18:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 3582 states have (on average 1.432998324958124) internal successors, (5133), 3778 states have internal predecessors, (5133), 862 states have call successors, (862), 692 states have call predecessors, (862), 711 states have return successors, (1259), 978 states have call predecessors, (1259), 854 states have call successors, (1259) [2023-04-01 12:18:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7254 transitions. [2023-04-01 12:18:39,418 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7254 transitions. Word has length 144 [2023-04-01 12:18:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:39,418 INFO L495 AbstractCegarLoop]: Abstraction has 5156 states and 7254 transitions. [2023-04-01 12:18:39,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7254 transitions. [2023-04-01 12:18:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:18:39,420 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:39,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:39,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:18:39,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:39,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:39,421 INFO L85 PathProgramCache]: Analyzing trace with hash 614298901, now seen corresponding path program 1 times [2023-04-01 12:18:39,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:39,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611453470] [2023-04-01 12:18:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:39,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:39,644 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 12:18:39,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:39,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611453470] [2023-04-01 12:18:39,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611453470] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:39,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:39,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:39,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320689236] [2023-04-01 12:18:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:39,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:39,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:39,646 INFO L87 Difference]: Start difference. First operand 5156 states and 7254 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:41,228 INFO L93 Difference]: Finished difference Result 21173 states and 32478 transitions. [2023-04-01 12:18:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 144 [2023-04-01 12:18:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:41,306 INFO L225 Difference]: With dead ends: 21173 [2023-04-01 12:18:41,306 INFO L226 Difference]: Without dead ends: 15798 [2023-04-01 12:18:41,349 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 12:18:41,350 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 2379 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:41,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2398 Valid, 2213 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:18:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15798 states. [2023-04-01 12:18:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15798 to 14657. [2023-04-01 12:18:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14657 states, 10317 states have (on average 1.4423766598817487) internal successors, (14881), 10860 states have internal predecessors, (14881), 2302 states have call successors, (2302), 1928 states have call predecessors, (2302), 2037 states have return successors, (4032), 2752 states have call predecessors, (4032), 2280 states have call successors, (4032) [2023-04-01 12:18:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14657 states to 14657 states and 21215 transitions. [2023-04-01 12:18:42,107 INFO L78 Accepts]: Start accepts. Automaton has 14657 states and 21215 transitions. Word has length 144 [2023-04-01 12:18:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:42,107 INFO L495 AbstractCegarLoop]: Abstraction has 14657 states and 21215 transitions. [2023-04-01 12:18:42,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:42,108 INFO L276 IsEmpty]: Start isEmpty. Operand 14657 states and 21215 transitions. [2023-04-01 12:18:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:18:42,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:42,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:18:42,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:42,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -388757964, now seen corresponding path program 1 times [2023-04-01 12:18:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:42,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478433599] [2023-04-01 12:18:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:42,296 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 12:18:42,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:42,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478433599] [2023-04-01 12:18:42,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478433599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:42,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:42,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:42,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632765168] [2023-04-01 12:18:42,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:42,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:42,298 INFO L87 Difference]: Start difference. First operand 14657 states and 21215 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:45,159 INFO L93 Difference]: Finished difference Result 59938 states and 95902 transitions. [2023-04-01 12:18:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 144 [2023-04-01 12:18:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:45,409 INFO L225 Difference]: With dead ends: 59938 [2023-04-01 12:18:45,409 INFO L226 Difference]: Without dead ends: 44675 [2023-04-01 12:18:45,517 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 12:18:45,519 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 2361 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:45,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 2213 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:18:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44675 states. [2023-04-01 12:18:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44675 to 40524. [2023-04-01 12:18:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40524 states, 28782 states have (on average 1.4519143909387813) internal successors, (41789), 30274 states have internal predecessors, (41789), 6062 states have call successors, (6062), 5220 states have call predecessors, (6062), 5679 states have return successors, (12869), 7598 states have call predecessors, (12869), 5994 states have call successors, (12869) [2023-04-01 12:18:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40524 states to 40524 states and 60720 transitions. [2023-04-01 12:18:47,942 INFO L78 Accepts]: Start accepts. Automaton has 40524 states and 60720 transitions. Word has length 144 [2023-04-01 12:18:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:18:47,943 INFO L495 AbstractCegarLoop]: Abstraction has 40524 states and 60720 transitions. [2023-04-01 12:18:47,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 40524 states and 60720 transitions. [2023-04-01 12:18:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:18:47,946 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:18:47,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:18:47,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:18:47,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:18:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 533162387, now seen corresponding path program 1 times [2023-04-01 12:18:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:18:47,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395084048] [2023-04-01 12:18:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:18:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:18:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:18:48,209 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 12:18:48,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:18:48,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395084048] [2023-04-01 12:18:48,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395084048] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:18:48,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:18:48,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:18:48,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418055323] [2023-04-01 12:18:48,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:18:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:18:48,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:18:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:18:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:18:48,212 INFO L87 Difference]: Start difference. First operand 40524 states and 60720 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:18:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:18:55,256 INFO L93 Difference]: Finished difference Result 166661 states and 280914 transitions. [2023-04-01 12:18:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:18:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 144 [2023-04-01 12:18:55,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:18:56,053 INFO L225 Difference]: With dead ends: 166661 [2023-04-01 12:18:56,054 INFO L226 Difference]: Without dead ends: 124488 [2023-04-01 12:18:56,532 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 12:18:56,534 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 2352 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:18:56,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 2213 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:18:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124488 states. [2023-04-01 12:19:02,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124488 to 111569. [2023-04-01 12:19:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111569 states, 79797 states have (on average 1.4601676754765216) internal successors, (116517), 83916 states have internal predecessors, (116517), 16010 states have call successors, (16010), 14040 states have call predecessors, (16010), 15761 states have return successors, (41766), 20944 states have call predecessors, (41766), 15796 states have call successors, (41766) [2023-04-01 12:19:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111569 states to 111569 states and 174293 transitions. [2023-04-01 12:19:04,294 INFO L78 Accepts]: Start accepts. Automaton has 111569 states and 174293 transitions. Word has length 144 [2023-04-01 12:19:04,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:19:04,295 INFO L495 AbstractCegarLoop]: Abstraction has 111569 states and 174293 transitions. [2023-04-01 12:19:04,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:19:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 111569 states and 174293 transitions. [2023-04-01 12:19:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:19:04,297 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:19:04,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:04,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:19:04,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:19:04,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:19:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash -403864812, now seen corresponding path program 1 times [2023-04-01 12:19:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:19:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94071809] [2023-04-01 12:19:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:04,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:19:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:04,476 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 12:19:04,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:19:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94071809] [2023-04-01 12:19:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94071809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:19:04,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:19:04,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:19:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104223525] [2023-04-01 12:19:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:19:04,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:19:04,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:19:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:19:04,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:19:04,479 INFO L87 Difference]: Start difference. First operand 111569 states and 174293 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 12:19:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:19:24,872 INFO L93 Difference]: Finished difference Result 456762 states and 823846 transitions. [2023-04-01 12:19:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:19:24,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 144 [2023-04-01 12:19:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:19:26,949 INFO L225 Difference]: With dead ends: 456762 [2023-04-01 12:19:26,950 INFO L226 Difference]: Without dead ends: 340677 [2023-04-01 12:19:28,425 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 12:19:28,429 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2280 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:19:28,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 2320 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:19:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340677 states.