/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/eca-rers2018/Problem10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:37:08,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:37:08,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:37:08,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:37:08,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:37:08,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:37:08,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:37:08,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:37:08,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:37:08,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:37:08,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:37:08,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 10:37:08,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 10:37:08,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 10:37:08,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 10:37:08,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 10:37:08,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 10:37:08,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 10:37:08,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 10:37:08,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 10:37:08,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 10:37:08,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 10:37:08,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 10:37:08,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 10:37:08,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 10:37:08,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 10:37:08,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 10:37:08,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 10:37:08,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 10:37:08,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 10:37:08,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 10:37:08,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 10:37:08,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 10:37:08,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:37:08,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:37:08,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:37:08,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 10:37:08,137 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:37:08,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:37:08,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:37:08,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:37:08,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:37:08,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:37:08,139 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:37:08,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:37:08,139 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:37:08,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:37:08,140 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:37:08,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:37:08,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:37:08,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:37:08,141 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:37:08,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:37:08,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:37:08,141 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:37:08,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:37:08,142 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:37:08,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:37:08,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:37:08,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:37:08,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:37:08,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:37:08,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:37:08,143 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:37:08,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:37:08,143 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:37:08,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:37:08,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:37:08,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:37:08,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:37:08,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:37:08,144 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:37:08,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:37:08,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:37:08,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:37:08,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:37:08,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:37:08,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:37:08,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:37:08,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:37:08,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:37:08,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:37:08,381 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:37:08,382 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:37:08,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2018/Problem10.c [2023-04-01 10:37:09,535 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:37:09,863 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:37:09,864 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem10.c [2023-04-01 10:37:09,895 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da495d192/0557de8d1efe43faa4cc991e5998e08b/FLAG9d80009bb [2023-04-01 10:37:09,913 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da495d192/0557de8d1efe43faa4cc991e5998e08b [2023-04-01 10:37:09,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:37:09,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:37:09,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:37:09,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:37:09,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:37:09,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:37:09" (1/1) ... [2023-04-01 10:37:09,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db93f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:09, skipping insertion in model container [2023-04-01 10:37:09,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:37:09" (1/1) ... [2023-04-01 10:37:09,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:37:09,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:37:10,105 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/eca-rers2018/Problem10.c[778,791] [2023-04-01 10:37:10,110 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/eca-rers2018/Problem10.c[817,830] [2023-04-01 10:37:10,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:37:10,525 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:37:10,539 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/eca-rers2018/Problem10.c[778,791] [2023-04-01 10:37:10,539 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/eca-rers2018/Problem10.c[817,830] [2023-04-01 10:37:10,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:37:10,679 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:37:10,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10 WrapperNode [2023-04-01 10:37:10,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:37:10,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:37:10,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:37:10,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:37:10,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:37:10,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:37:10,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:37:10,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:37:10,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (1/1) ... [2023-04-01 10:37:10,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:37:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:37:10,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 10:37:10,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 10:37:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:37:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:37:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:37:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2023-04-01 10:37:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2023-04-01 10:37:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_0 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_1 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_2 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_3 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_4 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_5 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_6 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_7 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_8 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_9 [2023-04-01 10:37:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_10 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_11 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_12 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_13 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_14 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_15 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_16 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_17 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_18 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_19 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_20 [2023-04-01 10:37:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_21 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_22 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_23 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_24 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_25 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_26 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_27 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_28 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_29 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_30 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_31 [2023-04-01 10:37:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_32 [2023-04-01 10:37:10,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_33 [2023-04-01 10:37:10,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_34 [2023-04-01 10:37:10,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_35 [2023-04-01 10:37:10,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_36 [2023-04-01 10:37:10,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_37 [2023-04-01 10:37:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_38 [2023-04-01 10:37:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_39 [2023-04-01 10:37:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_40 [2023-04-01 10:37:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_41 [2023-04-01 10:37:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_42 [2023-04-01 10:37:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_43 [2023-04-01 10:37:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_44 [2023-04-01 10:37:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_45 [2023-04-01 10:37:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_46 [2023-04-01 10:37:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_47 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_48 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_49 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_50 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_51 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_52 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_53 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_54 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_55 [2023-04-01 10:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_56 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_57 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_58 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_59 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_60 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_61 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_62 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_63 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_64 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_65 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_66 [2023-04-01 10:37:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_67 [2023-04-01 10:37:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_68 [2023-04-01 10:37:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_69 [2023-04-01 10:37:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_70 [2023-04-01 10:37:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_71 [2023-04-01 10:37:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_72 [2023-04-01 10:37:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_73 [2023-04-01 10:37:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_74 [2023-04-01 10:37:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_75 [2023-04-01 10:37:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_76 [2023-04-01 10:37:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_77 [2023-04-01 10:37:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_78 [2023-04-01 10:37:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_79 [2023-04-01 10:37:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_80 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_81 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_82 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_83 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_84 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_85 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_86 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_87 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_88 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_89 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_90 [2023-04-01 10:37:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_91 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_92 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_93 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_94 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_95 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_96 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_97 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_98 [2023-04-01 10:37:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_99 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure errorCheck [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm37 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm1 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm41 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm2 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm58 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm59 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm5 [2023-04-01 10:37:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm65 [2023-04-01 10:37:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm7 [2023-04-01 10:37:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm69 [2023-04-01 10:37:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm71 [2023-04-01 10:37:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm8 [2023-04-01 10:37:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm77 [2023-04-01 10:37:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm79 [2023-04-01 10:37:10,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm11 [2023-04-01 10:37:10,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm81 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm12 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm85 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm13 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm95 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm16 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm96 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm97 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm17 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm113 [2023-04-01 10:37:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm22 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm119 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm120 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm23 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm129 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm27 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm131 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm137 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm28 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm139 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm29 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm145 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm30 [2023-04-01 10:37:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm152 [2023-04-01 10:37:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_outputm32 [2023-04-01 10:37:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 10:37:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2023-04-01 10:37:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_0 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_1 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_2 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_3 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_4 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_5 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_6 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_7 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_8 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_9 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_10 [2023-04-01 10:37:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_11 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_12 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_13 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_14 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_15 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_16 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_17 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_18 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_19 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_20 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_21 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_22 [2023-04-01 10:37:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_23 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_24 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_25 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_26 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_27 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_28 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_29 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_30 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_31 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_32 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_33 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_34 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_35 [2023-04-01 10:37:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_36 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_37 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_38 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_39 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_40 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_41 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_42 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_43 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_44 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_45 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_46 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_47 [2023-04-01 10:37:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_48 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_49 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_50 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_51 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_52 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_53 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_54 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_55 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_56 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_57 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_58 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_59 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_60 [2023-04-01 10:37:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_61 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_62 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_63 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_64 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_65 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_66 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_67 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_68 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_69 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_70 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_71 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_72 [2023-04-01 10:37:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_73 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_74 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_75 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_76 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_77 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_78 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_79 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_80 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_81 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_82 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_83 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_84 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_85 [2023-04-01 10:37:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_86 [2023-04-01 10:37:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_87 [2023-04-01 10:37:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_88 [2023-04-01 10:37:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_89 [2023-04-01 10:37:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_90 [2023-04-01 10:37:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_91 [2023-04-01 10:37:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_92 [2023-04-01 10:37:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_93 [2023-04-01 10:37:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_94 [2023-04-01 10:37:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_95 [2023-04-01 10:37:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_96 [2023-04-01 10:37:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_97 [2023-04-01 10:37:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_98 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_99 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure errorCheck [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm1 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm2 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm3 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm4 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm5 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm6 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm7 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm8 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm9 [2023-04-01 10:37:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm10 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm11 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm12 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm13 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm14 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm15 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm16 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm17 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm18 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm19 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm20 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm21 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm22 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm23 [2023-04-01 10:37:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm24 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm25 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm26 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm27 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm28 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm29 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm30 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm31 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm32 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm33 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm34 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm35 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm36 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm37 [2023-04-01 10:37:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm38 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm39 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm40 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm41 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm42 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm43 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm44 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm45 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm46 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm47 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm48 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm49 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm50 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm51 [2023-04-01 10:37:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm52 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm53 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm54 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm55 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm56 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm57 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm58 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm59 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm60 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm61 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm62 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm63 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm64 [2023-04-01 10:37:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm65 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm66 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm67 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm68 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm69 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm70 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm71 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm72 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm73 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm74 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm75 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm76 [2023-04-01 10:37:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm77 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm78 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm79 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm80 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm81 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm82 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm83 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm84 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm85 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm86 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm87 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm88 [2023-04-01 10:37:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm89 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm90 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm91 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm92 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm93 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm94 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm95 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm96 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm97 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm98 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm99 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm100 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm101 [2023-04-01 10:37:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm102 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm103 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm104 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm105 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm106 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm107 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm108 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm109 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm110 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm111 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm112 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm113 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm114 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm115 [2023-04-01 10:37:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm116 [2023-04-01 10:37:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm117 [2023-04-01 10:37:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm118 [2023-04-01 10:37:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm119 [2023-04-01 10:37:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm120 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm121 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm122 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm123 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm124 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm125 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm126 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm127 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm128 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm129 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm130 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm131 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm132 [2023-04-01 10:37:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm133 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm134 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm135 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm136 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm137 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm138 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm139 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm140 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm141 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm142 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm143 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm144 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm145 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm146 [2023-04-01 10:37:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm147 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm148 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm149 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm150 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm151 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm152 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm153 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm154 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm155 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm156 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_outputm157 [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:37:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:37:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:37:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:37:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 10:37:11,133 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 10:37:11,137 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 10:37:12,228 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 10:37:12,594 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 10:37:12,594 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 10:37:12,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:37:12 BoogieIcfgContainer [2023-04-01 10:37:12,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 10:37:12,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 10:37:12,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 10:37:12,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 10:37:12,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:37:09" (1/3) ... [2023-04-01 10:37:12,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4f426a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:37:12, skipping insertion in model container [2023-04-01 10:37:12,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:10" (2/3) ... [2023-04-01 10:37:12,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4f426a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:37:12, skipping insertion in model container [2023-04-01 10:37:12,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:37:12" (3/3) ... [2023-04-01 10:37:12,611 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10.c [2023-04-01 10:37:12,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 10:37:12,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-04-01 10:37:12,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 10:37:12,707 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;@1bfcc647, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 10:37:12,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-04-01 10:37:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 705 states, 312 states have (on average 1.4775641025641026) internal successors, (461), 455 states have internal predecessors, (461), 244 states have call successors, (244), 146 states have call predecessors, (244), 146 states have return successors, (244), 244 states have call predecessors, (244), 244 states have call successors, (244) [2023-04-01 10:37:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 10:37:12,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:12,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:37:12,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:12,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1705190421, now seen corresponding path program 1 times [2023-04-01 10:37:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:12,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923785473] [2023-04-01 10:37:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:12,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:13,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923785473] [2023-04-01 10:37:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923785473] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:13,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:13,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825245445] [2023-04-01 10:37:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:13,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:13,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:13,322 INFO L87 Difference]: Start difference. First operand has 705 states, 312 states have (on average 1.4775641025641026) internal successors, (461), 455 states have internal predecessors, (461), 244 states have call successors, (244), 146 states have call predecessors, (244), 146 states have return successors, (244), 244 states have call predecessors, (244), 244 states have call successors, (244) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:13,627 INFO L93 Difference]: Finished difference Result 1200 states and 1788 transitions. [2023-04-01 10:37:13,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:13,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-01 10:37:13,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:13,648 INFO L225 Difference]: With dead ends: 1200 [2023-04-01 10:37:13,649 INFO L226 Difference]: Without dead ends: 495 [2023-04-01 10:37:13,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:13,659 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 624 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:13,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 585 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-04-01 10:37:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2023-04-01 10:37:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 210 states have (on average 1.680952380952381) internal successors, (353), 348 states have internal predecessors, (353), 240 states have call successors, (240), 144 states have call predecessors, (240), 43 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-01 10:37:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 636 transitions. [2023-04-01 10:37:13,735 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 636 transitions. Word has length 18 [2023-04-01 10:37:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:13,736 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 636 transitions. [2023-04-01 10:37:13,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 636 transitions. [2023-04-01 10:37:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-01 10:37:13,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:13,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:37:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 10:37:13,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:13,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1273669956, now seen corresponding path program 1 times [2023-04-01 10:37:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182309693] [2023-04-01 10:37:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:13,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182309693] [2023-04-01 10:37:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182309693] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875505039] [2023-04-01 10:37:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:13,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:13,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:13,858 INFO L87 Difference]: Start difference. First operand 495 states and 636 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:13,980 INFO L93 Difference]: Finished difference Result 497 states and 637 transitions. [2023-04-01 10:37:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:13,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-04-01 10:37:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:13,983 INFO L225 Difference]: With dead ends: 497 [2023-04-01 10:37:13,983 INFO L226 Difference]: Without dead ends: 491 [2023-04-01 10:37:13,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:13,985 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 611 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:13,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 597 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-04-01 10:37:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2023-04-01 10:37:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 210 states have (on average 1.6714285714285715) internal successors, (351), 346 states have internal predecessors, (351), 236 states have call successors, (236), 142 states have call predecessors, (236), 43 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-01 10:37:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 630 transitions. [2023-04-01 10:37:14,045 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 630 transitions. Word has length 19 [2023-04-01 10:37:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:14,045 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 630 transitions. [2023-04-01 10:37:14,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 630 transitions. [2023-04-01 10:37:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 10:37:14,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:14,053 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] [2023-04-01 10:37:14,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 10:37:14,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:14,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:14,055 INFO L85 PathProgramCache]: Analyzing trace with hash 781592212, now seen corresponding path program 1 times [2023-04-01 10:37:14,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:14,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403535984] [2023-04-01 10:37:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:14,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403535984] [2023-04-01 10:37:14,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403535984] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:14,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:14,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:14,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447870526] [2023-04-01 10:37:14,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:14,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:14,200 INFO L87 Difference]: Start difference. First operand 491 states and 630 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:14,353 INFO L93 Difference]: Finished difference Result 493 states and 631 transitions. [2023-04-01 10:37:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:14,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-04-01 10:37:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:14,362 INFO L225 Difference]: With dead ends: 493 [2023-04-01 10:37:14,362 INFO L226 Difference]: Without dead ends: 489 [2023-04-01 10:37:14,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:14,368 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 608 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:14,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 597 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-04-01 10:37:14,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2023-04-01 10:37:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 210 states have (on average 1.6666666666666667) internal successors, (350), 345 states have internal predecessors, (350), 234 states have call successors, (234), 141 states have call predecessors, (234), 43 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-01 10:37:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 627 transitions. [2023-04-01 10:37:14,435 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 627 transitions. Word has length 20 [2023-04-01 10:37:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:14,435 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 627 transitions. [2023-04-01 10:37:14,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 627 transitions. [2023-04-01 10:37:14,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-01 10:37:14,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:14,437 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] [2023-04-01 10:37:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 10:37:14,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:14,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1587768497, now seen corresponding path program 1 times [2023-04-01 10:37:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:14,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291676360] [2023-04-01 10:37:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:14,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291676360] [2023-04-01 10:37:14,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291676360] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:14,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:14,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:37:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245988456] [2023-04-01 10:37:14,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:37:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:37:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:37:14,514 INFO L87 Difference]: Start difference. First operand 489 states and 627 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:15,500 INFO L93 Difference]: Finished difference Result 1404 states and 2018 transitions. [2023-04-01 10:37:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 10:37:15,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-04-01 10:37:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:15,509 INFO L225 Difference]: With dead ends: 1404 [2023-04-01 10:37:15,510 INFO L226 Difference]: Without dead ends: 919 [2023-04-01 10:37:15,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:37:15,521 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 957 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:15,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 833 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 10:37:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-04-01 10:37:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 640. [2023-04-01 10:37:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 341 states have (on average 1.6744868035190617) internal successors, (571), 480 states have internal predecessors, (571), 242 states have call successors, (242), 149 states have call predecessors, (242), 55 states have return successors, (58), 55 states have call predecessors, (58), 51 states have call successors, (58) [2023-04-01 10:37:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 871 transitions. [2023-04-01 10:37:15,600 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 871 transitions. Word has length 21 [2023-04-01 10:37:15,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:15,601 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 871 transitions. [2023-04-01 10:37:15,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 871 transitions. [2023-04-01 10:37:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 10:37:15,603 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:15,603 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] [2023-04-01 10:37:15,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 10:37:15,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:15,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:15,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2023309374, now seen corresponding path program 1 times [2023-04-01 10:37:15,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:15,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066279910] [2023-04-01 10:37:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:15,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:15,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:15,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066279910] [2023-04-01 10:37:15,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066279910] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:37:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484916915] [2023-04-01 10:37:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:15,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:37:15,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:37:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:37:15,661 INFO L87 Difference]: Start difference. First operand 640 states and 871 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:16,712 INFO L93 Difference]: Finished difference Result 1956 states and 2935 transitions. [2023-04-01 10:37:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 10:37:16,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-04-01 10:37:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:16,720 INFO L225 Difference]: With dead ends: 1956 [2023-04-01 10:37:16,721 INFO L226 Difference]: Without dead ends: 1320 [2023-04-01 10:37:16,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:37:16,725 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1016 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:16,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 772 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 10:37:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-04-01 10:37:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 944. [2023-04-01 10:37:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 607 states have (on average 1.629324546952224) internal successors, (989), 751 states have internal predecessors, (989), 256 states have call successors, (256), 163 states have call predecessors, (256), 79 states have return successors, (94), 79 states have call predecessors, (94), 65 states have call successors, (94) [2023-04-01 10:37:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1339 transitions. [2023-04-01 10:37:16,787 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1339 transitions. Word has length 22 [2023-04-01 10:37:16,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:16,787 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1339 transitions. [2023-04-01 10:37:16,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1339 transitions. [2023-04-01 10:37:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 10:37:16,789 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:16,789 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] [2023-04-01 10:37:16,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 10:37:16,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:16,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1654941296, now seen corresponding path program 1 times [2023-04-01 10:37:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703716589] [2023-04-01 10:37:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:16,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:16,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703716589] [2023-04-01 10:37:16,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703716589] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:16,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:16,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333627021] [2023-04-01 10:37:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:16,866 INFO L87 Difference]: Start difference. First operand 944 states and 1339 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:16,985 INFO L93 Difference]: Finished difference Result 946 states and 1340 transitions. [2023-04-01 10:37:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-04-01 10:37:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:16,990 INFO L225 Difference]: With dead ends: 946 [2023-04-01 10:37:16,990 INFO L226 Difference]: Without dead ends: 940 [2023-04-01 10:37:16,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:16,991 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 598 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:16,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 578 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-04-01 10:37:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2023-04-01 10:37:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 607 states have (on average 1.6194398682042834) internal successors, (983), 749 states have internal predecessors, (983), 252 states have call successors, (252), 161 states have call predecessors, (252), 79 states have return successors, (94), 79 states have call predecessors, (94), 65 states have call successors, (94) [2023-04-01 10:37:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1329 transitions. [2023-04-01 10:37:17,081 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1329 transitions. Word has length 23 [2023-04-01 10:37:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:17,081 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1329 transitions. [2023-04-01 10:37:17,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1329 transitions. [2023-04-01 10:37:17,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 10:37:17,082 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:17,083 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] [2023-04-01 10:37:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 10:37:17,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:17,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:17,083 INFO L85 PathProgramCache]: Analyzing trace with hash -283248125, now seen corresponding path program 1 times [2023-04-01 10:37:17,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:17,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746744097] [2023-04-01 10:37:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:17,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:17,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:17,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746744097] [2023-04-01 10:37:17,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746744097] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:17,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:17,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:17,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038331260] [2023-04-01 10:37:17,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:17,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:17,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:17,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:17,154 INFO L87 Difference]: Start difference. First operand 940 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:17,349 INFO L93 Difference]: Finished difference Result 1861 states and 2652 transitions. [2023-04-01 10:37:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:17,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-04-01 10:37:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:17,359 INFO L225 Difference]: With dead ends: 1861 [2023-04-01 10:37:17,359 INFO L226 Difference]: Without dead ends: 1857 [2023-04-01 10:37:17,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:17,361 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 596 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:17,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1165 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2023-04-01 10:37:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1675. [2023-04-01 10:37:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1206 states have (on average 1.6194029850746268) internal successors, (1953), 1395 states have internal predecessors, (1953), 314 states have call successors, (314), 223 states have call predecessors, (314), 153 states have return successors, (197), 153 states have call predecessors, (197), 127 states have call successors, (197) [2023-04-01 10:37:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2464 transitions. [2023-04-01 10:37:17,463 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2464 transitions. Word has length 24 [2023-04-01 10:37:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:17,463 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2464 transitions. [2023-04-01 10:37:17,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2464 transitions. [2023-04-01 10:37:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 10:37:17,464 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:17,464 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] [2023-04-01 10:37:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 10:37:17,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:17,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash -237428925, now seen corresponding path program 1 times [2023-04-01 10:37:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:17,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641811347] [2023-04-01 10:37:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:17,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:17,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641811347] [2023-04-01 10:37:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641811347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:17,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:17,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:37:17,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253738790] [2023-04-01 10:37:17,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:17,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:37:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:37:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:37:17,523 INFO L87 Difference]: Start difference. First operand 1675 states and 2464 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:18,631 INFO L93 Difference]: Finished difference Result 5661 states and 9150 transitions. [2023-04-01 10:37:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 10:37:18,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-04-01 10:37:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:18,653 INFO L225 Difference]: With dead ends: 5661 [2023-04-01 10:37:18,654 INFO L226 Difference]: Without dead ends: 3990 [2023-04-01 10:37:18,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:37:18,665 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1020 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:18,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 873 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 10:37:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2023-04-01 10:37:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 3036. [2023-04-01 10:37:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3036 states, 2437 states have (on average 1.5609355765285187) internal successors, (3804), 2638 states have internal predecessors, (3804), 364 states have call successors, (364), 273 states have call predecessors, (364), 233 states have return successors, (427), 229 states have call predecessors, (427), 177 states have call successors, (427) [2023-04-01 10:37:18,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 4595 transitions. [2023-04-01 10:37:18,884 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 4595 transitions. Word has length 25 [2023-04-01 10:37:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:18,885 INFO L495 AbstractCegarLoop]: Abstraction has 3036 states and 4595 transitions. [2023-04-01 10:37:18,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 4595 transitions. [2023-04-01 10:37:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 10:37:18,886 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:18,886 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] [2023-04-01 10:37:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 10:37:18,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:18,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2098865113, now seen corresponding path program 1 times [2023-04-01 10:37:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68157066] [2023-04-01 10:37:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:18,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68157066] [2023-04-01 10:37:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68157066] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:18,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384497483] [2023-04-01 10:37:18,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:18,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:18,964 INFO L87 Difference]: Start difference. First operand 3036 states and 4595 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:19,150 INFO L93 Difference]: Finished difference Result 3038 states and 4596 transitions. [2023-04-01 10:37:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:19,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-04-01 10:37:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:19,164 INFO L225 Difference]: With dead ends: 3038 [2023-04-01 10:37:19,164 INFO L226 Difference]: Without dead ends: 3028 [2023-04-01 10:37:19,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:19,166 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 579 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:19,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 542 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2023-04-01 10:37:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3028. [2023-04-01 10:37:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2437 states have (on average 1.5445219532211736) internal successors, (3764), 2634 states have internal predecessors, (3764), 356 states have call successors, (356), 269 states have call predecessors, (356), 233 states have return successors, (427), 229 states have call predecessors, (427), 177 states have call successors, (427) [2023-04-01 10:37:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 4547 transitions. [2023-04-01 10:37:19,347 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 4547 transitions. Word has length 26 [2023-04-01 10:37:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:19,348 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 4547 transitions. [2023-04-01 10:37:19,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 4547 transitions. [2023-04-01 10:37:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 10:37:19,349 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:19,349 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] [2023-04-01 10:37:19,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 10:37:19,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:19,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1183109619, now seen corresponding path program 1 times [2023-04-01 10:37:19,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:19,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405374680] [2023-04-01 10:37:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:19,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:19,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405374680] [2023-04-01 10:37:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405374680] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:19,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:19,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:19,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426794703] [2023-04-01 10:37:19,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:19,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:19,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:19,414 INFO L87 Difference]: Start difference. First operand 3028 states and 4547 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:19,573 INFO L93 Difference]: Finished difference Result 3030 states and 4548 transitions. [2023-04-01 10:37:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:19,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-04-01 10:37:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:19,586 INFO L225 Difference]: With dead ends: 3030 [2023-04-01 10:37:19,586 INFO L226 Difference]: Without dead ends: 3024 [2023-04-01 10:37:19,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:19,589 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 579 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:19,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 554 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2023-04-01 10:37:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3024. [2023-04-01 10:37:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 2437 states have (on average 1.5334427574887157) internal successors, (3737), 2632 states have internal predecessors, (3737), 352 states have call successors, (352), 267 states have call predecessors, (352), 233 states have return successors, (427), 229 states have call predecessors, (427), 177 states have call successors, (427) [2023-04-01 10:37:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4516 transitions. [2023-04-01 10:37:19,736 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 4516 transitions. Word has length 26 [2023-04-01 10:37:19,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:19,737 INFO L495 AbstractCegarLoop]: Abstraction has 3024 states and 4516 transitions. [2023-04-01 10:37:19,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 4516 transitions. [2023-04-01 10:37:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 10:37:19,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:19,738 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] [2023-04-01 10:37:19,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 10:37:19,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:19,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2024686942, now seen corresponding path program 1 times [2023-04-01 10:37:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640936328] [2023-04-01 10:37:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:19,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:19,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:19,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640936328] [2023-04-01 10:37:19,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640936328] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:19,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:19,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:37:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271291756] [2023-04-01 10:37:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:19,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:37:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:37:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:37:19,809 INFO L87 Difference]: Start difference. First operand 3024 states and 4516 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:20,874 INFO L93 Difference]: Finished difference Result 9036 states and 14819 transitions. [2023-04-01 10:37:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 10:37:20,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-04-01 10:37:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:20,908 INFO L225 Difference]: With dead ends: 9036 [2023-04-01 10:37:20,908 INFO L226 Difference]: Without dead ends: 6016 [2023-04-01 10:37:20,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:37:20,928 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1014 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:20,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 752 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 10:37:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2023-04-01 10:37:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 4620. [2023-04-01 10:37:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 3899 states have (on average 1.4834572967427546) internal successors, (5784), 4112 states have internal predecessors, (5784), 410 states have call successors, (410), 325 states have call predecessors, (410), 309 states have return successors, (889), 301 states have call predecessors, (889), 235 states have call successors, (889) [2023-04-01 10:37:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 7083 transitions. [2023-04-01 10:37:21,217 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 7083 transitions. Word has length 27 [2023-04-01 10:37:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:21,217 INFO L495 AbstractCegarLoop]: Abstraction has 4620 states and 7083 transitions. [2023-04-01 10:37:21,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 7083 transitions. [2023-04-01 10:37:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-01 10:37:21,218 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:21,219 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] [2023-04-01 10:37:21,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 10:37:21,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:21,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:21,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1583003325, now seen corresponding path program 1 times [2023-04-01 10:37:21,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:21,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50801430] [2023-04-01 10:37:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:21,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:21,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50801430] [2023-04-01 10:37:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50801430] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:37:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697535857] [2023-04-01 10:37:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:37:21,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:37:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:37:21,267 INFO L87 Difference]: Start difference. First operand 4620 states and 7083 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:22,407 INFO L93 Difference]: Finished difference Result 13380 states and 22386 transitions. [2023-04-01 10:37:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 10:37:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-04-01 10:37:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:22,467 INFO L225 Difference]: With dead ends: 13380 [2023-04-01 10:37:22,467 INFO L226 Difference]: Without dead ends: 8536 [2023-04-01 10:37:22,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:37:22,500 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 957 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:22,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 904 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 10:37:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2023-04-01 10:37:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 6940. [2023-04-01 10:37:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6940 states, 6031 states have (on average 1.4286188028519318) internal successors, (8616), 6264 states have internal predecessors, (8616), 494 states have call successors, (494), 409 states have call predecessors, (494), 413 states have return successors, (1639), 407 states have call predecessors, (1639), 319 states have call successors, (1639) [2023-04-01 10:37:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6940 states to 6940 states and 10749 transitions. [2023-04-01 10:37:22,971 INFO L78 Accepts]: Start accepts. Automaton has 6940 states and 10749 transitions. Word has length 29 [2023-04-01 10:37:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:22,972 INFO L495 AbstractCegarLoop]: Abstraction has 6940 states and 10749 transitions. [2023-04-01 10:37:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6940 states and 10749 transitions. [2023-04-01 10:37:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-01 10:37:22,976 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:22,976 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] [2023-04-01 10:37:22,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 10:37:22,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:22,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2139099494, now seen corresponding path program 1 times [2023-04-01 10:37:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:22,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949116644] [2023-04-01 10:37:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:22,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:23,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:23,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949116644] [2023-04-01 10:37:23,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949116644] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:23,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:23,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:23,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69108880] [2023-04-01 10:37:23,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:23,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:23,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:23,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:23,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:23,073 INFO L87 Difference]: Start difference. First operand 6940 states and 10749 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:23,566 INFO L93 Difference]: Finished difference Result 13832 states and 21959 transitions. [2023-04-01 10:37:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2023-04-01 10:37:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:23,624 INFO L225 Difference]: With dead ends: 13832 [2023-04-01 10:37:23,624 INFO L226 Difference]: Without dead ends: 13828 [2023-04-01 10:37:23,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:23,633 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 575 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:23,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1130 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13828 states. [2023-04-01 10:37:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13828 to 13646. [2023-04-01 10:37:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13646 states, 12037 states have (on average 1.4271828528703165) internal successors, (17179), 12408 states have internal predecessors, (17179), 802 states have call successors, (802), 717 states have call predecessors, (802), 805 states have return successors, (3763), 797 states have call predecessors, (3763), 627 states have call successors, (3763) [2023-04-01 10:37:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13646 states to 13646 states and 21744 transitions. [2023-04-01 10:37:24,465 INFO L78 Accepts]: Start accepts. Automaton has 13646 states and 21744 transitions. Word has length 35 [2023-04-01 10:37:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:24,465 INFO L495 AbstractCegarLoop]: Abstraction has 13646 states and 21744 transitions. [2023-04-01 10:37:24,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13646 states and 21744 transitions. [2023-04-01 10:37:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-01 10:37:24,467 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:24,467 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] [2023-04-01 10:37:24,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 10:37:24,468 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:24,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash -295242960, now seen corresponding path program 1 times [2023-04-01 10:37:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:24,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919151361] [2023-04-01 10:37:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:24,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:24,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:24,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919151361] [2023-04-01 10:37:24,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919151361] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:24,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:24,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:37:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071392652] [2023-04-01 10:37:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:24,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:37:24,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:37:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:37:24,521 INFO L87 Difference]: Start difference. First operand 13646 states and 21744 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:26,015 INFO L93 Difference]: Finished difference Result 42546 states and 80141 transitions. [2023-04-01 10:37:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 10:37:26,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-04-01 10:37:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:26,254 INFO L225 Difference]: With dead ends: 42546 [2023-04-01 10:37:26,255 INFO L226 Difference]: Without dead ends: 28904 [2023-04-01 10:37:26,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:37:26,321 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1144 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:26,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1388 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 10:37:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28904 states. [2023-04-01 10:37:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28904 to 22878. [2023-04-01 10:37:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22878 states, 20427 states have (on average 1.4203749938806483) internal successors, (29014), 20957 states have internal predecessors, (29014), 1178 states have call successors, (1178), 1093 states have call predecessors, (1178), 1271 states have return successors, (9301), 1255 states have call predecessors, (9301), 1003 states have call successors, (9301) [2023-04-01 10:37:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22878 states to 22878 states and 39493 transitions. [2023-04-01 10:37:28,521 INFO L78 Accepts]: Start accepts. Automaton has 22878 states and 39493 transitions. Word has length 33 [2023-04-01 10:37:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:28,521 INFO L495 AbstractCegarLoop]: Abstraction has 22878 states and 39493 transitions. [2023-04-01 10:37:28,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:37:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 22878 states and 39493 transitions. [2023-04-01 10:37:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 10:37:28,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:28,523 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] [2023-04-01 10:37:28,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 10:37:28,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:28,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1418235152, now seen corresponding path program 1 times [2023-04-01 10:37:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554566022] [2023-04-01 10:37:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:28,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:28,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554566022] [2023-04-01 10:37:28,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554566022] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:28,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088047618] [2023-04-01 10:37:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:28,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:28,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:28,717 INFO L87 Difference]: Start difference. First operand 22878 states and 39493 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:30,101 INFO L93 Difference]: Finished difference Result 63980 states and 126714 transitions. [2023-04-01 10:37:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-04-01 10:37:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:30,287 INFO L225 Difference]: With dead ends: 63980 [2023-04-01 10:37:30,287 INFO L226 Difference]: Without dead ends: 41106 [2023-04-01 10:37:30,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:30,421 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 560 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:30,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1017 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41106 states. [2023-04-01 10:37:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41106 to 40908. [2023-04-01 10:37:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40908 states, 36881 states have (on average 1.4144952685664705) internal successors, (52168), 37706 states have internal predecessors, (52168), 1888 states have call successors, (1888), 1803 states have call predecessors, (1888), 2137 states have return successors, (23781), 2105 states have call predecessors, (23781), 1713 states have call successors, (23781) [2023-04-01 10:37:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40908 states to 40908 states and 77837 transitions. [2023-04-01 10:37:33,381 INFO L78 Accepts]: Start accepts. Automaton has 40908 states and 77837 transitions. Word has length 39 [2023-04-01 10:37:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:33,382 INFO L495 AbstractCegarLoop]: Abstraction has 40908 states and 77837 transitions. [2023-04-01 10:37:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 40908 states and 77837 transitions. [2023-04-01 10:37:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 10:37:33,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:33,384 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] [2023-04-01 10:37:33,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 10:37:33,384 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:33,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:33,384 INFO L85 PathProgramCache]: Analyzing trace with hash -82138734, now seen corresponding path program 1 times [2023-04-01 10:37:33,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:33,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590843709] [2023-04-01 10:37:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:33,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:33,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:33,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590843709] [2023-04-01 10:37:33,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590843709] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:33,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:33,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:33,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310158900] [2023-04-01 10:37:33,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:33,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:33,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:33,685 INFO L87 Difference]: Start difference. First operand 40908 states and 77837 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:36,239 INFO L93 Difference]: Finished difference Result 116882 states and 268981 transitions. [2023-04-01 10:37:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:37:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-04-01 10:37:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:36,900 INFO L225 Difference]: With dead ends: 116882 [2023-04-01 10:37:36,900 INFO L226 Difference]: Without dead ends: 75978 [2023-04-01 10:37:37,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:37,246 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 557 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:37,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1390 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:37:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75978 states. [2023-04-01 10:37:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75978 to 75812. [2023-04-01 10:37:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75812 states, 68533 states have (on average 1.4136255526534662) internal successors, (96880), 69994 states have internal predecessors, (96880), 3340 states have call successors, (3340), 3255 states have call predecessors, (3340), 3937 states have return successors, (66781), 3873 states have call predecessors, (66781), 3165 states have call successors, (66781) [2023-04-01 10:37:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75812 states to 75812 states and 167001 transitions. [2023-04-01 10:37:45,849 INFO L78 Accepts]: Start accepts. Automaton has 75812 states and 167001 transitions. Word has length 39 [2023-04-01 10:37:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:45,849 INFO L495 AbstractCegarLoop]: Abstraction has 75812 states and 167001 transitions. [2023-04-01 10:37:45,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 75812 states and 167001 transitions. [2023-04-01 10:37:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-01 10:37:45,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:45,851 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] [2023-04-01 10:37:45,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 10:37:45,852 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:45,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash 121491326, now seen corresponding path program 1 times [2023-04-01 10:37:45,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:45,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338814078] [2023-04-01 10:37:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:45,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:45,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:45,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338814078] [2023-04-01 10:37:45,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338814078] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:45,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:45,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 10:37:45,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371010277] [2023-04-01 10:37:45,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:45,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 10:37:45,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:45,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 10:37:45,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:37:45,984 INFO L87 Difference]: Start difference. First operand 75812 states and 167001 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:37:48,952 INFO L93 Difference]: Finished difference Result 77486 states and 170997 transitions. [2023-04-01 10:37:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 10:37:48,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2023-04-01 10:37:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:37:49,256 INFO L225 Difference]: With dead ends: 77486 [2023-04-01 10:37:49,256 INFO L226 Difference]: Without dead ends: 77474 [2023-04-01 10:37:49,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 10:37:49,280 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 824 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 10:37:49,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 599 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 10:37:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77474 states. [2023-04-01 10:37:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77474 to 76650. [2023-04-01 10:37:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76650 states, 69357 states have (on average 1.392909151203195) internal successors, (96608), 70821 states have internal predecessors, (96608), 3338 states have call successors, (3338), 3258 states have call predecessors, (3338), 3953 states have return successors, (67237), 3881 states have call predecessors, (67237), 3173 states have call successors, (67237) [2023-04-01 10:37:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76650 states to 76650 states and 167183 transitions. [2023-04-01 10:37:57,343 INFO L78 Accepts]: Start accepts. Automaton has 76650 states and 167183 transitions. Word has length 40 [2023-04-01 10:37:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:37:57,343 INFO L495 AbstractCegarLoop]: Abstraction has 76650 states and 167183 transitions. [2023-04-01 10:37:57,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:37:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 76650 states and 167183 transitions. [2023-04-01 10:37:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 10:37:57,345 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:37:57,345 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] [2023-04-01 10:37:57,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 10:37:57,345 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:37:57,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:37:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash -855636225, now seen corresponding path program 1 times [2023-04-01 10:37:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:37:57,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530205493] [2023-04-01 10:37:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:37:57,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:37:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:37:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:37:57,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:37:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530205493] [2023-04-01 10:37:57,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530205493] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:37:57,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:37:57,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:37:57,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124935139] [2023-04-01 10:37:57,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:37:57,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:37:57,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:37:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:37:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:37:57,425 INFO L87 Difference]: Start difference. First operand 76650 states and 167183 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:38:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:38:01,772 INFO L93 Difference]: Finished difference Result 142742 states and 343541 transitions. [2023-04-01 10:38:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:38:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-04-01 10:38:01,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:38:02,571 INFO L225 Difference]: With dead ends: 142742 [2023-04-01 10:38:02,572 INFO L226 Difference]: Without dead ends: 142732 [2023-04-01 10:38:02,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:38:02,611 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 537 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:38:02,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 983 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:38:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142732 states.