/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 [2023-04-03 01:29:13,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:29:13,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:29:13,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:29:13,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:29:13,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:29:13,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:29:13,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:29:13,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:29:13,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:29:13,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:29:13,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:29:13,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:29:13,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:29:13,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:29:13,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:29:13,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:29:13,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:29:13,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:29:13,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:29:13,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:29:13,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:29:13,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:29:13,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:29:13,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:29:13,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:29:13,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:29:13,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:29:13,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:29:13,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:29:13,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:29:13,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:29:13,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:29:13,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:29:13,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:29:13,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:29:13,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:29:13,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:29:13,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:29:13,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:29:13,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:29:13,839 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 01:29:13,861 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:29:13,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:29:13,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:29:13,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:29:13,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:29:13,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:29:13,862 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:29:13,862 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:29:13,862 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:29:13,862 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:29:13,863 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:29:13,863 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:29:13,863 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:29:13,863 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:29:13,863 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:29:13,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:29:13,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:29:13,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:29:13,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:29:13,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:29:13,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:29:13,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:29:13,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:29:13,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:29:13,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:29:13,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:29:14,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:29:14,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:29:14,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:29:14,064 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:29:14,064 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:29:14,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.10.cil.c [2023-04-03 01:29:15,170 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:29:15,332 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:29:15,333 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c [2023-04-03 01:29:15,340 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d8a3b862/a53c2c6cd2374fbe9bc8034b74dd843e/FLAGa23689c44 [2023-04-03 01:29:15,350 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d8a3b862/a53c2c6cd2374fbe9bc8034b74dd843e [2023-04-03 01:29:15,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:29:15,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:29:15,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:29:15,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:29:15,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:29:15,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3d85f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15, skipping insertion in model container [2023-04-03 01:29:15,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:29:15,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:29:15,494 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] [2023-04-03 01:29:15,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:29:15,622 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:29:15,631 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] [2023-04-03 01:29:15,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:29:15,676 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:29:15,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15 WrapperNode [2023-04-03 01:29:15,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:29:15,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:29:15,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:29:15,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:29:15,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,742 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:29:15,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:29:15,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:29:15,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:29:15,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (1/1) ... [2023-04-03 01:29:15,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:29:15,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:29:15,799 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 01:29:15,804 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 01:29:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:29:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:29:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:29:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-03 01:29:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-03 01:29:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-03 01:29:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-03 01:29:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-03 01:29:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-03 01:29:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:29:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:29:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:29:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2023-04-03 01:29:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2023-04-03 01:29:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-03 01:29:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-03 01:29:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:29:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:29:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:29:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:29:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:29:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:29:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:29:15,929 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:29:15,932 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:29:16,613 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:29:16,912 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:29:16,912 INFO L302 CfgBuilder]: Removed 14 assume(true) statements. [2023-04-03 01:29:16,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:29:16 BoogieIcfgContainer [2023-04-03 01:29:16,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:29:16,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:29:16,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:29:16,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:29:16,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:29:15" (1/3) ... [2023-04-03 01:29:16,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65be40a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:29:16, skipping insertion in model container [2023-04-03 01:29:16,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:29:15" (2/3) ... [2023-04-03 01:29:16,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65be40a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:29:16, skipping insertion in model container [2023-04-03 01:29:16,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:29:16" (3/3) ... [2023-04-03 01:29:16,923 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2023-04-03 01:29:16,937 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:29:16,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:29:16,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:29:16,997 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;@50b8f04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:29:16,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:29:17,022 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) [2023-04-03 01:29:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-03 01:29:17,033 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:17,034 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] [2023-04-03 01:29:17,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:17,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1270897351, now seen corresponding path program 1 times [2023-04-03 01:29:17,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:17,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906442310] [2023-04-03 01:29:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:17,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:17,861 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 01:29:17,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906442310] [2023-04-03 01:29:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906442310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:17,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:17,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003899671] [2023-04-03 01:29:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:17,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:17,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:17,912 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) [2023-04-03 01:29:19,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:19,604 INFO L93 Difference]: Finished difference Result 2099 states and 3223 transitions. [2023-04-03 01:29:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 01:29:19,607 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 [2023-04-03 01:29:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:19,634 INFO L225 Difference]: With dead ends: 2099 [2023-04-03 01:29:19,634 INFO L226 Difference]: Without dead ends: 1808 [2023-04-03 01:29:19,642 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 [2023-04-03 01:29:19,644 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 2678 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 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 [2023-04-03 01:29:19,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 2016 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 01:29:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-04-03 01:29:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1775. [2023-04-03 01:29:19,801 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) [2023-04-03 01:29:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2591 transitions. [2023-04-03 01:29:19,810 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2591 transitions. Word has length 128 [2023-04-03 01:29:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:19,810 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2591 transitions. [2023-04-03 01:29:19,810 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) [2023-04-03 01:29:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2591 transitions. [2023-04-03 01:29:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-03 01:29:19,813 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:19,813 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] [2023-04-03 01:29:19,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:29:19,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:19,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:19,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2117313498, now seen corresponding path program 1 times [2023-04-03 01:29:19,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:19,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779399131] [2023-04-03 01:29:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:19,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:29:20,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779399131] [2023-04-03 01:29:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779399131] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:20,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483729703] [2023-04-03 01:29:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:20,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:20,062 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) [2023-04-03 01:29:21,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:21,914 INFO L93 Difference]: Finished difference Result 7567 states and 12423 transitions. [2023-04-03 01:29:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 01:29:21,915 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 [2023-04-03 01:29:21,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:21,947 INFO L225 Difference]: With dead ends: 7567 [2023-04-03 01:29:21,947 INFO L226 Difference]: Without dead ends: 5732 [2023-04-03 01:29:21,962 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 [2023-04-03 01:29:21,963 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 2503 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:21,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 2053 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 01:29:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5732 states. [2023-04-03 01:29:22,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5732 to 5484. [2023-04-03 01:29:22,352 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) [2023-04-03 01:29:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 8430 transitions. [2023-04-03 01:29:22,388 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 8430 transitions. Word has length 128 [2023-04-03 01:29:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:22,388 INFO L495 AbstractCegarLoop]: Abstraction has 5484 states and 8430 transitions. [2023-04-03 01:29:22,388 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) [2023-04-03 01:29:22,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 8430 transitions. [2023-04-03 01:29:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-03 01:29:22,390 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:22,390 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] [2023-04-03 01:29:22,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:29:22,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:22,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:22,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2109562939, now seen corresponding path program 1 times [2023-04-03 01:29:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:22,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538615099] [2023-04-03 01:29:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:22,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:22,646 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 01:29:22,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:22,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538615099] [2023-04-03 01:29:22,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538615099] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:22,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:22,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:29:22,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176393232] [2023-04-03 01:29:22,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:22,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:29:22,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:22,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:29:22,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:29:22,648 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) [2023-04-03 01:29:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:24,590 INFO L93 Difference]: Finished difference Result 21564 states and 38435 transitions. [2023-04-03 01:29:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 01:29:24,591 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 [2023-04-03 01:29:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:24,754 INFO L225 Difference]: With dead ends: 21564 [2023-04-03 01:29:24,755 INFO L226 Difference]: Without dead ends: 15876 [2023-04-03 01:29:24,797 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 [2023-04-03 01:29:24,798 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2455 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:24,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 2077 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 01:29:24,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15876 states. [2023-04-03 01:29:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15876 to 14679. [2023-04-03 01:29:25,759 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) [2023-04-03 01:29:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14679 states to 14679 states and 24141 transitions. [2023-04-03 01:29:25,858 INFO L78 Accepts]: Start accepts. Automaton has 14679 states and 24141 transitions. Word has length 128 [2023-04-03 01:29:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:25,859 INFO L495 AbstractCegarLoop]: Abstraction has 14679 states and 24141 transitions. [2023-04-03 01:29:25,860 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) [2023-04-03 01:29:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 14679 states and 24141 transitions. [2023-04-03 01:29:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-03 01:29:25,864 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:25,865 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] [2023-04-03 01:29:25,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:29:25,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:25,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1419657419, now seen corresponding path program 1 times [2023-04-03 01:29:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:25,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276534555] [2023-04-03 01:29:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:25,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 01:29:26,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:26,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276534555] [2023-04-03 01:29:26,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276534555] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:26,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:26,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:26,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505554453] [2023-04-03 01:29:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:26,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:26,210 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) [2023-04-03 01:29:29,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:29,299 INFO L93 Difference]: Finished difference Result 52287 states and 97279 transitions. [2023-04-03 01:29:29,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:29,300 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 [2023-04-03 01:29:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:29,552 INFO L225 Difference]: With dead ends: 52287 [2023-04-03 01:29:29,552 INFO L226 Difference]: Without dead ends: 37625 [2023-04-03 01:29:29,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:29:29,695 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1184 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:29,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1014 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 01:29:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37625 states. [2023-04-03 01:29:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37625 to 35664. [2023-04-03 01:29:31,956 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) [2023-04-03 01:29:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35664 states to 35664 states and 66394 transitions. [2023-04-03 01:29:32,191 INFO L78 Accepts]: Start accepts. Automaton has 35664 states and 66394 transitions. Word has length 150 [2023-04-03 01:29:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:32,192 INFO L495 AbstractCegarLoop]: Abstraction has 35664 states and 66394 transitions. [2023-04-03 01:29:32,192 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) [2023-04-03 01:29:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 35664 states and 66394 transitions. [2023-04-03 01:29:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-03 01:29:32,198 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:32,198 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] [2023-04-03 01:29:32,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:29:32,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:32,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1944398007, now seen corresponding path program 1 times [2023-04-03 01:29:32,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178067363] [2023-04-03 01:29:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-03 01:29:32,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:32,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178067363] [2023-04-03 01:29:32,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178067363] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:32,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:32,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:32,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120778991] [2023-04-03 01:29:32,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:32,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:32,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:32,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:32,593 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) [2023-04-03 01:29:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:29:41,784 INFO L93 Difference]: Finished difference Result 138668 states and 322102 transitions. [2023-04-03 01:29:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:29:41,785 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 [2023-04-03 01:29:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:29:42,971 INFO L225 Difference]: With dead ends: 138668 [2023-04-03 01:29:42,972 INFO L226 Difference]: Without dead ends: 103021 [2023-04-03 01:29:43,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:29:43,513 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1446 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:29:43,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 875 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 01:29:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103021 states. [2023-04-03 01:29:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103021 to 86803. [2023-04-03 01:29:51,093 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) [2023-04-03 01:29:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86803 states to 86803 states and 192794 transitions. [2023-04-03 01:29:53,030 INFO L78 Accepts]: Start accepts. Automaton has 86803 states and 192794 transitions. Word has length 152 [2023-04-03 01:29:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:29:53,032 INFO L495 AbstractCegarLoop]: Abstraction has 86803 states and 192794 transitions. [2023-04-03 01:29:53,032 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) [2023-04-03 01:29:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 86803 states and 192794 transitions. [2023-04-03 01:29:53,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-03 01:29:53,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:29:53,051 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] [2023-04-03 01:29:53,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:29:53,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:29:53,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:29:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1250839945, now seen corresponding path program 1 times [2023-04-03 01:29:53,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:29:53,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057837376] [2023-04-03 01:29:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:29:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:29:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:29:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-03 01:29:53,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:29:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057837376] [2023-04-03 01:29:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057837376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:29:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:29:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:29:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740930721] [2023-04-03 01:29:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:29:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:29:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:29:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:29:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:29:53,362 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) [2023-04-03 01:30:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:30:23,939 INFO L93 Difference]: Finished difference Result 347287 states and 1043252 transitions. [2023-04-03 01:30:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:30:23,940 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 154 [2023-04-03 01:30:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:30:28,356 INFO L225 Difference]: With dead ends: 347287 [2023-04-03 01:30:28,356 INFO L226 Difference]: Without dead ends: 260501 [2023-04-03 01:30:31,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:30:31,440 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1192 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 01:30:31,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1027 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 01:30:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260501 states. [2023-04-03 01:30:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260501 to 217320. [2023-04-03 01:30:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217320 states, 148033 states have (on average 1.5198030168948815) internal successors, (224981), 171778 states have internal predecessors, (224981), 43125 states have call successors, (43125), 14743 states have call predecessors, (43125), 26161 states have return successors, (341618), 52452 states have call predecessors, (341618), 43025 states have call successors, (341618) [2023-04-03 01:31:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217320 states to 217320 states and 609724 transitions. [2023-04-03 01:31:06,344 INFO L78 Accepts]: Start accepts. Automaton has 217320 states and 609724 transitions. Word has length 154 [2023-04-03 01:31:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:31:06,344 INFO L495 AbstractCegarLoop]: Abstraction has 217320 states and 609724 transitions. [2023-04-03 01:31:06,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-04-03 01:31:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 217320 states and 609724 transitions. [2023-04-03 01:31:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-03 01:31:06,373 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:31:06,373 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, 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] [2023-04-03 01:31:06,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 01:31:06,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:31:06,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:31:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1043627095, now seen corresponding path program 1 times [2023-04-03 01:31:06,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:31:06,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111954993] [2023-04-03 01:31:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:06,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:31:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-03 01:31:06,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:31:06,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111954993] [2023-04-03 01:31:06,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111954993] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:31:06,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:31:06,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:31:06,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739310983] [2023-04-03 01:31:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:31:06,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:31:06,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:31:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:31:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:31:06,992 INFO L87 Difference]: Start difference. First operand 217320 states and 609724 transitions. Second operand has 9 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 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)