/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/systemc/transmitter.10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:11:58,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:11:58,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:11:58,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:11:58,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:11:58,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:11:58,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:11:58,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:11:58,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:11:58,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:11:58,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:11:58,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:11:58,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:11:58,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:11:58,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:11:58,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:11:58,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:11:58,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:11:58,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:11:58,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:11:58,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:11:58,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:11:58,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:11:58,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:11:58,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:11:58,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:11:58,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:11:58,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:11:58,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:11:58,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:11:58,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:11:58,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:11:58,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:11:58,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:11:58,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:11:58,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:11:58,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:11:58,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:11:58,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:11:58,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:11:58,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:11:58,295 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 06:11:58,318 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:11:58,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:11:58,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:11:58,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:11:58,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:11:58,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:11:58,319 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:11:58,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:11:58,319 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:11:58,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:11:58,320 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:11:58,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:11:58,320 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:11:58,320 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:11:58,321 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:11:58,321 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:11:58,321 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:11:58,321 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:11:58,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:11:58,321 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:11:58,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:11:58,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:11:58,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:11:58,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:11:58,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:11:58,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:11:58,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:11:58,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:11:58,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:11:58,518 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:11:58,519 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:11:58,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.10.cil.c [2023-04-01 06:11:59,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:11:59,910 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:11:59,911 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c [2023-04-01 06:11:59,950 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/128ab1346/dda8ae4971d343f28bd7c9e0a1655936/FLAG3aa5eba07 [2023-04-01 06:12:00,192 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/128ab1346/dda8ae4971d343f28bd7c9e0a1655936 [2023-04-01 06:12:00,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:12:00,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:12:00,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:12:00,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:12:00,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:12:00,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9f4add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00, skipping insertion in model container [2023-04-01 06:12:00,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:12:00,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:12:00,452 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.10.cil.c[706,719] [2023-04-01 06:12:00,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:12:00,556 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:12:00,563 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.10.cil.c[706,719] [2023-04-01 06:12:00,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:12:00,617 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:12:00,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00 WrapperNode [2023-04-01 06:12:00,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:12:00,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:12:00,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:12:00,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:12:00,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:12:00,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:12:00,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:12:00,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:12:00,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (1/1) ... [2023-04-01 06:12:00,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:12:00,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:12:00,700 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 06:12:00,703 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 06:12:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2023-04-01 06:12:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-01 06:12:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2023-04-01 06:12:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2023-04-01 06:12:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2023-04-01 06:12:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2023-04-01 06:12:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2023-04-01 06:12:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-01 06:12:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-01 06:12:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-01 06:12:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-01 06:12:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-01 06:12:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-01 06:12:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-01 06:12:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-01 06:12:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-01 06:12:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-01 06:12:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-01 06:12:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-01 06:12:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-01 06:12:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:12:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:12:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:12:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:12:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:12:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:12:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-01 06:12:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-01 06:12:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:12:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:12:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:12:00,825 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:12:00,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:12:01,375 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:12:01,623 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:12:01,623 INFO L302 CfgBuilder]: Removed 14 assume(true) statements. [2023-04-01 06:12:01,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:12:01 BoogieIcfgContainer [2023-04-01 06:12:01,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:12:01,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:12:01,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:12:01,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:12:01,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:12:00" (1/3) ... [2023-04-01 06:12:01,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170878c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:12:01, skipping insertion in model container [2023-04-01 06:12:01,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:12:00" (2/3) ... [2023-04-01 06:12:01,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170878c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:12:01, skipping insertion in model container [2023-04-01 06:12:01,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:12:01" (3/3) ... [2023-04-01 06:12:01,638 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2023-04-01 06:12:01,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:12:01,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:12:01,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:12:01,710 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;@10da576d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:12:01,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:12:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 164 states have (on average 1.451219512195122) internal successors, (238), 179 states have internal predecessors, (238), 55 states have call successors, (55), 38 states have call predecessors, (55), 38 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-04-01 06:12:01,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-01 06:12:01,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:12:01,730 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] [2023-04-01 06:12:01,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:12:01,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:12:01,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1270897351, now seen corresponding path program 1 times [2023-04-01 06:12:01,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:12:01,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75576679] [2023-04-01 06:12:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:12:01,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:12:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:12:02,537 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 06:12:02,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:12:02,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75576679] [2023-04-01 06:12:02,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75576679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:12:02,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:12:02,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:12:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754244150] [2023-04-01 06:12:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:12:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:12:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:12:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:12:02,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:12:02,592 INFO L87 Difference]: Start difference. First operand has 259 states, 164 states have (on average 1.451219512195122) internal successors, (238), 179 states have internal predecessors, (238), 55 states have call successors, (55), 38 states have call predecessors, (55), 38 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-01 06:12:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:12:04,267 INFO L93 Difference]: Finished difference Result 2099 states and 3223 transitions. [2023-04-01 06:12:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 06:12:04,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 128 [2023-04-01 06:12:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:12:04,287 INFO L225 Difference]: With dead ends: 2099 [2023-04-01 06:12:04,288 INFO L226 Difference]: Without dead ends: 1808 [2023-04-01 06:12:04,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 06:12:04,295 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 2677 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2700 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:12:04,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2700 Valid, 2016 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 06:12:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-04-01 06:12:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1775. [2023-04-01 06:12:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1175 states have (on average 1.4272340425531915) internal successors, (1677), 1264 states have internal predecessors, (1677), 355 states have call successors, (355), 256 states have call predecessors, (355), 244 states have return successors, (559), 341 states have call predecessors, (559), 352 states have call successors, (559) [2023-04-01 06:12:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2591 transitions. [2023-04-01 06:12:04,476 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2591 transitions. Word has length 128 [2023-04-01 06:12:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:12:04,476 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2591 transitions. [2023-04-01 06:12:04,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-01 06:12:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2591 transitions. [2023-04-01 06:12:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-01 06:12:04,479 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:12:04,479 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] [2023-04-01 06:12:04,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:12:04,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:12:04,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:12:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2117313498, now seen corresponding path program 1 times [2023-04-01 06:12:04,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:12:04,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989145191] [2023-04-01 06:12:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:12:04,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:12:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:12:04,711 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 06:12:04,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:12:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989145191] [2023-04-01 06:12:04,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989145191] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:12:04,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:12:04,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:12:04,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247670358] [2023-04-01 06:12:04,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:12:04,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:12:04,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:12:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:12:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:12:04,714 INFO L87 Difference]: Start difference. First operand 1775 states and 2591 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-01 06:12:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:12:06,265 INFO L93 Difference]: Finished difference Result 7567 states and 12423 transitions. [2023-04-01 06:12:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 06:12:06,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 128 [2023-04-01 06:12:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:12:06,299 INFO L225 Difference]: With dead ends: 7567 [2023-04-01 06:12:06,299 INFO L226 Difference]: Without dead ends: 5732 [2023-04-01 06:12:06,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 06:12:06,316 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 2502 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:12:06,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 2053 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 06:12:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5732 states. [2023-04-01 06:12:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5732 to 5484. [2023-04-01 06:12:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 3683 states have (on average 1.4423024708118382) internal successors, (5312), 3962 states have internal predecessors, (5312), 1039 states have call successors, (1039), 779 states have call predecessors, (1039), 761 states have return successors, (2079), 1044 states have call predecessors, (2079), 1034 states have call successors, (2079) [2023-04-01 06:12:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 8430 transitions. [2023-04-01 06:12:06,624 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 8430 transitions. Word has length 128 [2023-04-01 06:12:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:12:06,625 INFO L495 AbstractCegarLoop]: Abstraction has 5484 states and 8430 transitions. [2023-04-01 06:12:06,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-01 06:12:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 8430 transitions. [2023-04-01 06:12:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-01 06:12:06,626 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:12:06,626 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] [2023-04-01 06:12:06,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:12:06,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:12:06,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:12:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2109562939, now seen corresponding path program 1 times [2023-04-01 06:12:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:12:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041686350] [2023-04-01 06:12:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:12:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:12:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:12:06,868 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 06:12:06,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:12:06,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041686350] [2023-04-01 06:12:06,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041686350] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:12:06,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:12:06,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:12:06,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801717694] [2023-04-01 06:12:06,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:12:06,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:12:06,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:12:06,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:12:06,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:12:06,870 INFO L87 Difference]: Start difference. First operand 5484 states and 8430 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 06:12:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:12:08,824 INFO L93 Difference]: Finished difference Result 21564 states and 38435 transitions. [2023-04-01 06:12:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 06:12:08,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 128 [2023-04-01 06:12:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:12:08,925 INFO L225 Difference]: With dead ends: 21564 [2023-04-01 06:12:08,925 INFO L226 Difference]: Without dead ends: 15876 [2023-04-01 06:12:09,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 06:12:09,015 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2456 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:12:09,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2477 Valid, 2077 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 06:12:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15876 states. [2023-04-01 06:12:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15876 to 14679. [2023-04-01 06:12:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14679 states, 9980 states have (on average 1.4633266533066132) internal successors, (14604), 10726 states have internal predecessors, (14604), 2644 states have call successors, (2644), 2028 states have call predecessors, (2644), 2054 states have return successors, (6893), 2831 states have call predecessors, (6893), 2628 states have call successors, (6893) [2023-04-01 06:12:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14679 states to 14679 states and 24141 transitions. [2023-04-01 06:12:10,046 INFO L78 Accepts]: Start accepts. Automaton has 14679 states and 24141 transitions. Word has length 128 [2023-04-01 06:12:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:12:10,046 INFO L495 AbstractCegarLoop]: Abstraction has 14679 states and 24141 transitions. [2023-04-01 06:12:10,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 06:12:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 14679 states and 24141 transitions. [2023-04-01 06:12:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-01 06:12:10,050 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:12:10,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:12:10,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:12:10,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:12:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1419657419, now seen corresponding path program 1 times [2023-04-01 06:12:10,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:12:10,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351061704] [2023-04-01 06:12:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:12:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:12:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:12:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 06:12:10,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:12:10,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351061704] [2023-04-01 06:12:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351061704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:12:10,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:12:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:12:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680938670] [2023-04-01 06:12:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:12:10,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:12:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:12:10,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:12:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:12:10,520 INFO L87 Difference]: Start difference. First operand 14679 states and 24141 transitions. Second operand has 9 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 06:12:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:12:13,677 INFO L93 Difference]: Finished difference Result 52287 states and 97279 transitions. [2023-04-01 06:12:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:12:13,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 150 [2023-04-01 06:12:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:12:14,233 INFO L225 Difference]: With dead ends: 52287 [2023-04-01 06:12:14,233 INFO L226 Difference]: Without dead ends: 37625 [2023-04-01 06:12:14,315 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 06:12:14,322 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1184 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:12:14,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 1012 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:12:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37625 states. [2023-04-01 06:12:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37625 to 35664. [2023-04-01 06:12:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35664 states, 24296 states have (on average 1.5027988146196904) internal successors, (36512), 27201 states have internal predecessors, (36512), 6751 states have call successors, (6751), 3882 states have call predecessors, (6751), 4616 states have return successors, (23131), 7623 states have call predecessors, (23131), 6723 states have call successors, (23131) [2023-04-01 06:12:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35664 states to 35664 states and 66394 transitions. [2023-04-01 06:12:18,153 INFO L78 Accepts]: Start accepts. Automaton has 35664 states and 66394 transitions. Word has length 150 [2023-04-01 06:12:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:12:18,154 INFO L495 AbstractCegarLoop]: Abstraction has 35664 states and 66394 transitions. [2023-04-01 06:12:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 06:12:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 35664 states and 66394 transitions. [2023-04-01 06:12:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-01 06:12:18,159 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:12:18,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:18,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:12:18,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:12:18,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:12:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1944398007, now seen corresponding path program 1 times [2023-04-01 06:12:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:12:18,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873586756] [2023-04-01 06:12:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:12:18,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:12:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:12:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 06:12:18,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:12:18,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873586756] [2023-04-01 06:12:18,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873586756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:12:18,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:12:18,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:12:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920042761] [2023-04-01 06:12:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:12:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:12:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:12:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:12:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:12:18,837 INFO L87 Difference]: Start difference. First operand 35664 states and 66394 transitions. Second operand has 9 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 06:12:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:12:29,914 INFO L93 Difference]: Finished difference Result 138668 states and 322102 transitions. [2023-04-01 06:12:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:12:29,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 152 [2023-04-01 06:12:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:12:31,511 INFO L225 Difference]: With dead ends: 138668 [2023-04-01 06:12:31,512 INFO L226 Difference]: Without dead ends: 103021 [2023-04-01 06:12:31,958 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 06:12:31,958 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1446 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:12:31,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 876 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 06:12:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103021 states. [2023-04-01 06:12:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103021 to 86803. [2023-04-01 06:12:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86803 states, 59049 states have (on average 1.510779183390066) internal successors, (89210), 67432 states have internal predecessors, (89210), 16886 states have call successors, (16886), 7566 states have call predecessors, (16886), 10867 states have return successors, (86698), 19910 states have call predecessors, (86698), 16834 states have call successors, (86698) [2023-04-01 06:12:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86803 states to 86803 states and 192794 transitions. [2023-04-01 06:12:40,981 INFO L78 Accepts]: Start accepts. Automaton has 86803 states and 192794 transitions. Word has length 152 [2023-04-01 06:12:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:12:40,981 INFO L495 AbstractCegarLoop]: Abstraction has 86803 states and 192794 transitions. [2023-04-01 06:12:40,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 06:12:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 86803 states and 192794 transitions. [2023-04-01 06:12:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-01 06:12:40,987 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:12:40,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:40,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:12:40,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:12:40,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:12:40,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1250839945, now seen corresponding path program 1 times [2023-04-01 06:12:40,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:12:40,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073925730] [2023-04-01 06:12:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:12:40,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:12:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:12:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:12:41,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:12:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073925730] [2023-04-01 06:12:41,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073925730] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:12:41,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:12:41,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:12:41,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362838215] [2023-04-01 06:12:41,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:12:41,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:12:41,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:12:41,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:12:41,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:12:41,291 INFO L87 Difference]: Start difference. First operand 86803 states and 192794 transitions. Second operand has 9 states, 7 states have (on average 13.857142857142858) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21)