/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.11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:29:23,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:29:23,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:29:23,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:29:23,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:29:23,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:29:23,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:29:23,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:29:23,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:29:23,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:29:23,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:29:23,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:29:23,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:29:23,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:29:23,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:29:23,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:29:23,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:29:23,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:29:23,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:29:23,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:29:23,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:29:23,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:29:23,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:29:23,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:29:23,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:29:23,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:29:23,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:29:23,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:29:23,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:29:23,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:29:23,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:29:23,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:29:23,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:29:23,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:29:23,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:29:23,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:29:23,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:29:23,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:29:23,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:29:23,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:29:23,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:29:23,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:29:23,924 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:29:23,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:29:23,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:29:23,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:29:23,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:29:23,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:29:23,926 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:29:23,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:29:23,926 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:29:23,926 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:29:23,927 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:29:23,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:29:23,927 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:29:23,927 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:29:23,927 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:29:23,927 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:29:23,928 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:29:23,928 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:29:23,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:29:23,929 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:29:23,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:29:23,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:29:23,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:29:23,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:29:23,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:29:23,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:29:23,930 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:29:23,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:29:23,930 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:29:23,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:29:23,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:29:23,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:29:23,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:29:23,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:29:23,931 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:29:23,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:29:23,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:29:23,931 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:29:23,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:29:23,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:29:23,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:29:23,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:29:24,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:29:24,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:29:24,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:29:24,221 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:29:24,221 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:29:24,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.11.cil.c [2023-04-03 01:29:25,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:29:25,683 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:29:25,684 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.11.cil.c [2023-04-03 01:29:25,705 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711316747/b66cfede47424b30a27d41f4505f5880/FLAGded8cfb72 [2023-04-03 01:29:25,719 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711316747/b66cfede47424b30a27d41f4505f5880 [2023-04-03 01:29:25,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:29:25,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:29:25,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:29:25,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:29:25,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:29:25,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:29:25" (1/1) ... [2023-04-03 01:29:25,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53266db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:25, skipping insertion in model container [2023-04-03 01:29:25,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:29:25" (1/1) ... [2023-04-03 01:29:25,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:29:25,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:29:25,908 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.11.cil.c[706,719] [2023-04-03 01:29:26,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:29:26,054 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:29:26,083 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.11.cil.c[706,719] [2023-04-03 01:29:26,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:29:26,173 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:29:26,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26 WrapperNode [2023-04-03 01:29:26,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:29:26,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:29:26,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:29:26,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:29:26,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:29:26,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:29:26,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:29:26,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:29:26,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (1/1) ... [2023-04-03 01:29:26,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:29:26,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:29:26,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 01:29:26,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 01:29:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:29:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:29:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:29:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-03 01:29:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-03 01:29:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-03 01:29:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-03 01:29:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-03 01:29:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-03 01:29:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-03 01:29:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-03 01:29:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-03 01:29:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-03 01:29:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-03 01:29:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-03 01:29:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-03 01:29:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-03 01:29:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-03 01:29:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-03 01:29:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-03 01:29:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:29:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:29:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:29:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:29:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:29:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:29:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-03 01:29:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-03 01:29:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-03 01:29:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-03 01:29:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-03 01:29:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-03 01:29:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-03 01:29:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2023-04-03 01:29:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2023-04-03 01:29:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2023-04-03 01:29:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2023-04-03 01:29:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2023-04-03 01:29:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2023-04-03 01:29:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-03 01:29:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-03 01:29:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-03 01:29:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-03 01:29:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-03 01:29:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-03 01:29:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-03 01:29:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-03 01:29:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-03 01:29:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:29:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:29:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:29:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:29:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:29:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:29:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:29:26,522 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:29:26,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:29:27,348 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:29:27,745 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:29:27,745 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-04-03 01:29:27,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:29:27 BoogieIcfgContainer [2023-04-03 01:29:27,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:29:27,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:29:27,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:29:27,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:29:27,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:29:25" (1/3) ... [2023-04-03 01:29:27,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105b2286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:29:27, skipping insertion in model container [2023-04-03 01:29:27,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:26" (2/3) ... [2023-04-03 01:29:27,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105b2286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:29:27, skipping insertion in model container [2023-04-03 01:29:27,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:29:27" (3/3) ... [2023-04-03 01:29:27,759 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.11.cil.c [2023-04-03 01:29:27,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:29:27,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:29:27,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:29:27,855 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;@f4af36b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:29:27,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:29:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 176 states have (on average 1.4545454545454546) internal successors, (256), 192 states have internal predecessors, (256), 58 states have call successors, (58), 40 states have call predecessors, (58), 40 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-04-03 01:29:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:29:27,881 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:27,882 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] [2023-04-03 01:29:27,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:27,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:27,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2036905147, now seen corresponding path program 1 times [2023-04-03 01:29:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:27,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328062425] [2023-04-03 01:29:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:28,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328062425] [2023-04-03 01:29:28,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328062425] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:28,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:28,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 01:29:28,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432501994] [2023-04-03 01:29:28,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 01:29:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:28,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 01:29:28,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:29:28,880 INFO L87 Difference]: Start difference. First operand has 276 states, 176 states have (on average 1.4545454545454546) internal successors, (256), 192 states have internal predecessors, (256), 58 states have call successors, (58), 40 states have call predecessors, (58), 40 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-03 01:29:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:29,645 INFO L93 Difference]: Finished difference Result 786 states and 1123 transitions. [2023-04-03 01:29:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 01:29:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 136 [2023-04-03 01:29:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:29,668 INFO L225 Difference]: With dead ends: 786 [2023-04-03 01:29:29,668 INFO L226 Difference]: Without dead ends: 514 [2023-04-03 01:29:29,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:29:29,685 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 658 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:29,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 951 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:29:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-04-03 01:29:29,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 510. [2023-04-03 01:29:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 334 states have (on average 1.4221556886227544) internal successors, (475), 360 states have internal predecessors, (475), 105 states have call successors, (105), 74 states have call predecessors, (105), 70 states have return successors, (103), 101 states have call predecessors, (103), 102 states have call successors, (103) [2023-04-03 01:29:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 683 transitions. [2023-04-03 01:29:29,821 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 683 transitions. Word has length 136 [2023-04-03 01:29:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:29,822 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 683 transitions. [2023-04-03 01:29:29,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-03 01:29:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 683 transitions. [2023-04-03 01:29:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:29:29,829 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:29,829 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] [2023-04-03 01:29:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:29:29,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:29,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1020279674, now seen corresponding path program 1 times [2023-04-03 01:29:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141431589] [2023-04-03 01:29:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:30,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141431589] [2023-04-03 01:29:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141431589] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:30,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321292058] [2023-04-03 01:29:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:30,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:30,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:30,258 INFO L87 Difference]: Start difference. First operand 510 states and 683 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:31,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:31,873 INFO L93 Difference]: Finished difference Result 2210 states and 3151 transitions. [2023-04-03 01:29:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:31,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 136 [2023-04-03 01:29:31,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:31,886 INFO L225 Difference]: With dead ends: 2210 [2023-04-03 01:29:31,886 INFO L226 Difference]: Without dead ends: 1680 [2023-04-03 01:29:31,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:31,891 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 2224 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2240 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:31,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2240 Valid, 2054 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [788 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 01:29:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-04-03 01:29:32,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1624. [2023-04-03 01:29:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1102 states have (on average 1.4192377495462796) internal successors, (1564), 1167 states have internal predecessors, (1564), 297 states have call successors, (297), 225 states have call predecessors, (297), 224 states have return successors, (359), 315 states have call predecessors, (359), 293 states have call successors, (359) [2023-04-03 01:29:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2220 transitions. [2023-04-03 01:29:32,055 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2220 transitions. Word has length 136 [2023-04-03 01:29:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:32,057 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2220 transitions. [2023-04-03 01:29:32,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2220 transitions. [2023-04-03 01:29:32,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:29:32,060 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:32,060 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] [2023-04-03 01:29:32,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:29:32,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:32,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash -698957211, now seen corresponding path program 1 times [2023-04-03 01:29:32,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:32,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600886002] [2023-04-03 01:29:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:32,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600886002] [2023-04-03 01:29:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600886002] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:32,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:32,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:32,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462394853] [2023-04-03 01:29:32,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:32,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:32,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:32,394 INFO L87 Difference]: Start difference. First operand 1624 states and 2220 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:34,077 INFO L93 Difference]: Finished difference Result 6689 states and 9873 transitions. [2023-04-03 01:29:34,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:34,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 136 [2023-04-03 01:29:34,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:34,108 INFO L225 Difference]: With dead ends: 6689 [2023-04-03 01:29:34,109 INFO L226 Difference]: Without dead ends: 4993 [2023-04-03 01:29:34,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:34,123 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2214 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:34,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 2055 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 01:29:34,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2023-04-03 01:29:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4788. [2023-04-03 01:29:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 3315 states have (on average 1.428054298642534) internal successors, (4734), 3497 states have internal predecessors, (4734), 806 states have call successors, (806), 647 states have call predecessors, (806), 666 states have return successors, (1172), 912 states have call predecessors, (1172), 798 states have call successors, (1172) [2023-04-03 01:29:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 6712 transitions. [2023-04-03 01:29:34,484 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 6712 transitions. Word has length 136 [2023-04-03 01:29:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:34,485 INFO L495 AbstractCegarLoop]: Abstraction has 4788 states and 6712 transitions. [2023-04-03 01:29:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 6712 transitions. [2023-04-03 01:29:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:29:34,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:34,488 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] [2023-04-03 01:29:34,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:29:34,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:34,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1485443430, now seen corresponding path program 1 times [2023-04-03 01:29:34,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:34,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586241743] [2023-04-03 01:29:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:34,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:34,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:34,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586241743] [2023-04-03 01:29:34,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586241743] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:34,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:34,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:34,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427302587] [2023-04-03 01:29:34,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:34,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:34,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:34,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:34,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:34,823 INFO L87 Difference]: Start difference. First operand 4788 states and 6712 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:36,906 INFO L93 Difference]: Finished difference Result 19613 states and 29984 transitions. [2023-04-03 01:29:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 136 [2023-04-03 01:29:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:37,011 INFO L225 Difference]: With dead ends: 19613 [2023-04-03 01:29:37,011 INFO L226 Difference]: Without dead ends: 14610 [2023-04-03 01:29:37,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:37,064 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2207 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:37,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 2055 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 01:29:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14610 states. [2023-04-03 01:29:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14610 to 13546. [2023-04-03 01:29:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13546 states, 9505 states have (on average 1.4373487638085218) internal successors, (13662), 10009 states have internal predecessors, (13662), 2141 states have call successors, (2141), 1790 states have call predecessors, (2141), 1899 states have return successors, (3728), 2553 states have call predecessors, (3728), 2119 states have call successors, (3728) [2023-04-03 01:29:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 19531 transitions. [2023-04-03 01:29:38,040 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 19531 transitions. Word has length 136 [2023-04-03 01:29:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:38,040 INFO L495 AbstractCegarLoop]: Abstraction has 13546 states and 19531 transitions. [2023-04-03 01:29:38,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 19531 transitions. [2023-04-03 01:29:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:29:38,043 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:38,043 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] [2023-04-03 01:29:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:29:38,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:38,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -141086331, now seen corresponding path program 1 times [2023-04-03 01:29:38,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185701815] [2023-04-03 01:29:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:38,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:38,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185701815] [2023-04-03 01:29:38,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185701815] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:38,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926428352] [2023-04-03 01:29:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:38,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:38,448 INFO L87 Difference]: Start difference. First operand 13546 states and 19531 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:41,998 INFO L93 Difference]: Finished difference Result 55629 states and 88578 transitions. [2023-04-03 01:29:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:41,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 136 [2023-04-03 01:29:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:42,292 INFO L225 Difference]: With dead ends: 55629 [2023-04-03 01:29:42,292 INFO L226 Difference]: Without dead ends: 41485 [2023-04-03 01:29:42,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:42,442 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2198 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:42,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2214 Valid, 2055 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 01:29:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41485 states. [2023-04-03 01:29:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41485 to 37650. [2023-04-03 01:29:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37650 states, 26677 states have (on average 1.4455148629905912) internal successors, (38562), 28061 states have internal predecessors, (38562), 5654 states have call successors, (5654), 4859 states have call predecessors, (5654), 5318 states have return successors, (11866), 7060 states have call predecessors, (11866), 5586 states have call successors, (11866) [2023-04-03 01:29:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37650 states to 37650 states and 56082 transitions. [2023-04-03 01:29:45,436 INFO L78 Accepts]: Start accepts. Automaton has 37650 states and 56082 transitions. Word has length 136 [2023-04-03 01:29:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:45,437 INFO L495 AbstractCegarLoop]: Abstraction has 37650 states and 56082 transitions. [2023-04-03 01:29:45,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 37650 states and 56082 transitions. [2023-04-03 01:29:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:29:45,441 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:45,442 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] [2023-04-03 01:29:45,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:29:45,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:45,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1358272954, now seen corresponding path program 1 times [2023-04-03 01:29:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880613545] [2023-04-03 01:29:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:46,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880613545] [2023-04-03 01:29:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880613545] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:46,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149439719] [2023-04-03 01:29:46,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:46,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:46,063 INFO L87 Difference]: Start difference. First operand 37650 states and 56082 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:29:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:53,992 INFO L93 Difference]: Finished difference Result 155055 states and 259524 transitions. [2023-04-03 01:29:53,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:29:53,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 136 [2023-04-03 01:29:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:55,245 INFO L225 Difference]: With dead ends: 155055 [2023-04-03 01:29:55,246 INFO L226 Difference]: Without dead ends: 115772 [2023-04-03 01:29:55,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:55,633 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2189 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:55,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2206 Valid, 2055 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 01:29:55,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115772 states. [2023-04-03 01:30:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115772 to 103920. [2023-04-03 01:30:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103920 states, 74183 states have (on average 1.4525430354663467) internal successors, (107754), 78001 states have internal predecessors, (107754), 14945 states have call successors, (14945), 13070 states have call predecessors, (14945), 14791 states have return successors, (38326), 19457 states have call predecessors, (38326), 14731 states have call successors, (38326) [2023-04-03 01:30:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103920 states to 103920 states and 161025 transitions. [2023-04-03 01:30:03,826 INFO L78 Accepts]: Start accepts. Automaton has 103920 states and 161025 transitions. Word has length 136 [2023-04-03 01:30:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:30:03,826 INFO L495 AbstractCegarLoop]: Abstraction has 103920 states and 161025 transitions. [2023-04-03 01:30:03,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:30:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 103920 states and 161025 transitions. [2023-04-03 01:30:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:30:03,830 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:30:03,830 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] [2023-04-03 01:30:03,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 01:30:03,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:30:03,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:30:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1659541669, now seen corresponding path program 1 times [2023-04-03 01:30:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:30:03,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13071227] [2023-04-03 01:30:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:30:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:30:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:30:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:30:04,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:30:04,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13071227] [2023-04-03 01:30:04,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13071227] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:30:04,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:30:04,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:30:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766409045] [2023-04-03 01:30:04,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:30:04,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:30:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:30:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:30:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:30:04,146 INFO L87 Difference]: Start difference. First operand 103920 states and 161025 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:30:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:30:25,223 INFO L93 Difference]: Finished difference Result 428691 states and 764086 transitions. [2023-04-03 01:30:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:30:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 136 [2023-04-03 01:30:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:30:27,732 INFO L225 Difference]: With dead ends: 428691 [2023-04-03 01:30:27,733 INFO L226 Difference]: Without dead ends: 320287 [2023-04-03 01:30:29,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:30:29,439 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2180 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 781 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 01:30:29,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 2055 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [781 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 01:30:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320287 states. [2023-04-03 01:30:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320287 to 285928. [2023-04-03 01:30:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285928 states, 205319 states have (on average 1.4586959804012294) internal successors, (299498), 215965 states have internal predecessors, (299498), 39586 states have call successors, (39586), 34951 states have call predecessors, (39586), 41022 states have return successors, (126560), 53572 states have call predecessors, (126560), 38918 states have call successors, (126560) [2023-04-03 01:30:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285928 states to 285928 states and 465644 transitions. [2023-04-03 01:30:52,493 INFO L78 Accepts]: Start accepts. Automaton has 285928 states and 465644 transitions. Word has length 136 [2023-04-03 01:30:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:30:52,493 INFO L495 AbstractCegarLoop]: Abstraction has 285928 states and 465644 transitions. [2023-04-03 01:30:52,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:30:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 285928 states and 465644 transitions. [2023-04-03 01:30:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-03 01:30:52,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:30:52,497 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] [2023-04-03 01:30:52,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 01:30:52,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:30:52,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:30:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -295779546, now seen corresponding path program 1 times [2023-04-03 01:30:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:30:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105488721] [2023-04-03 01:30:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:30:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:30:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:30:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:30:52,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:30:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105488721] [2023-04-03 01:30:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105488721] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:30:52,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:30:52,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:30:52,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359797837] [2023-04-03 01:30:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:30:52,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:30:52,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:30:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:30:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:30:52,798 INFO L87 Difference]: Start difference. First operand 285928 states and 465644 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 01:32:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:32:04,847 INFO L93 Difference]: Finished difference Result 1168293 states and 2265412 transitions. [2023-04-03 01:32:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:32:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 136 [2023-04-03 01:32:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:32:15,435 INFO L225 Difference]: With dead ends: 1168293 [2023-04-03 01:32:15,435 INFO L226 Difference]: Without dead ends: 869870