./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29f58006f2dcb74445f74971d42059f9136b4de9a536aa3c519655ea459ca984 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:01:03,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:01:03,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:01:03,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:01:03,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:01:03,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:01:03,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:01:03,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:01:03,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:01:03,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:01:03,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:01:03,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:01:03,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:01:03,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:01:03,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:01:03,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:01:03,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:01:03,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:01:03,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:01:03,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:01:03,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:01:03,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:01:03,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:01:03,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:01:03,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:01:03,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:01:03,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:01:03,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:01:03,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:01:03,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:01:03,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:01:03,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:01:03,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:01:03,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:01:03,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:01:03,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:01:03,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:01:03,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:01:03,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:01:03,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:01:03,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:01:03,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:01:03,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:01:03,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:01:03,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:01:03,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:01:03,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:01:03,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:01:03,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:01:03,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:01:03,946 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:01:03,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:01:03,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:01:03,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:01:03,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:01:03,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:01:03,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:01:03,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:01:03,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:01:03,949 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:01:03,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:01:03,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:01:03,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:01:03,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:01:03,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:01:03,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:01:03,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:01:03,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:01:03,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:01:03,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:01:03,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:01:03,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:01:03,951 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:01:03,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:01:03,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:01:03,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:01:03,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29f58006f2dcb74445f74971d42059f9136b4de9a536aa3c519655ea459ca984 [2021-12-16 02:01:04,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:01:04,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:01:04,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:01:04,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:01:04,186 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:01:04,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c [2021-12-16 02:01:04,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeeb625e/8523447c2b77435b8283b83f8483d371/FLAGa7bc33fa2 [2021-12-16 02:01:04,885 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:01:04,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c [2021-12-16 02:01:04,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeeb625e/8523447c2b77435b8283b83f8483d371/FLAGa7bc33fa2 [2021-12-16 02:01:04,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeeb625e/8523447c2b77435b8283b83f8483d371 [2021-12-16 02:01:04,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:01:04,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:01:04,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:01:04,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:01:04,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:01:04,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:04" (1/1) ... [2021-12-16 02:01:04,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15219373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:04, skipping insertion in model container [2021-12-16 02:01:04,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:04" (1/1) ... [2021-12-16 02:01:04,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:01:05,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:01:06,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c[382357,382370] [2021-12-16 02:01:06,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c[383339,383352] [2021-12-16 02:01:06,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:01:06,806 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:01:07,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c[382357,382370] [2021-12-16 02:01:07,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c[383339,383352] [2021-12-16 02:01:07,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:01:07,498 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:01:07,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07 WrapperNode [2021-12-16 02:01:07,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:01:07,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:01:07,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:01:07,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:01:07,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:07,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:07,910 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-16 02:01:07,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:01:07,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:01:07,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:01:07,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:01:07,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:07,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:08,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:08,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:08,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:08,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:08,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:08,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:01:08,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:01:08,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:01:08,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:01:08,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (1/1) ... [2021-12-16 02:01:08,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:01:08,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:01:08,353 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) [2021-12-16 02:01:08,375 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 [2021-12-16 02:01:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:01:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 02:01:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 02:01:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:01:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:01:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 02:01:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 02:01:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 02:01:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 02:01:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 02:01:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 02:01:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 02:01:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 02:01:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:01:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:01:08,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:01:08,531 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:01:08,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:01:13,484 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:01:13,511 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:01:13,512 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-16 02:01:13,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:01:13 BoogieIcfgContainer [2021-12-16 02:01:13,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:01:13,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:01:13,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:01:13,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:01:13,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:01:04" (1/3) ... [2021-12-16 02:01:13,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506ce5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:01:13, skipping insertion in model container [2021-12-16 02:01:13,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:07" (2/3) ... [2021-12-16 02:01:13,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506ce5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:01:13, skipping insertion in model container [2021-12-16 02:01:13,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:01:13" (3/3) ... [2021-12-16 02:01:13,522 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.13.cil-2.c [2021-12-16 02:01:13,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:01:13,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:01:13,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:01:13,583 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:01:13,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:01:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:13,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:13,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:13,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-16 02:01:13,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:13,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700374681] [2021-12-16 02:01:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:13,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:14,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:14,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700374681] [2021-12-16 02:01:14,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700374681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:14,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:14,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:01:14,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870087641] [2021-12-16 02:01:14,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:14,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:01:14,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:01:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:01:14,140 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:15,778 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2021-12-16 02:01:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:15,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:15,809 INFO L225 Difference]: With dead ends: 5325 [2021-12-16 02:01:15,809 INFO L226 Difference]: Without dead ends: 2676 [2021-12-16 02:01:15,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:15,825 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:15,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 17241 Invalid, 817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-16 02:01:15,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-16 02:01:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2021-12-16 02:01:15,981 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2021-12-16 02:01:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:15,981 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2021-12-16 02:01:15,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2021-12-16 02:01:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:15,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:15,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:15,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:01:15,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:15,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2021-12-16 02:01:15,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:15,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50017597] [2021-12-16 02:01:15,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:15,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:16,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:16,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50017597] [2021-12-16 02:01:16,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50017597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:16,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:16,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:01:16,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293520760] [2021-12-16 02:01:16,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:16,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:01:16,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:01:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:01:16,216 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:17,553 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2021-12-16 02:01:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:17,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:17,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:17,563 INFO L225 Difference]: With dead ends: 3061 [2021-12-16 02:01:17,563 INFO L226 Difference]: Without dead ends: 2676 [2021-12-16 02:01:17,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:17,568 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:17,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 16968 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-16 02:01:17,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-16 02:01:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2021-12-16 02:01:17,625 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2021-12-16 02:01:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:17,625 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2021-12-16 02:01:17,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2021-12-16 02:01:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:17,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:17,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:17,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:01:17,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2021-12-16 02:01:17,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:17,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280914927] [2021-12-16 02:01:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:17,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:17,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:17,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280914927] [2021-12-16 02:01:17,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280914927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:17,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:17,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:01:17,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531810405] [2021-12-16 02:01:17,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:17,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:01:17,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:01:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:01:17,786 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:19,298 INFO L93 Difference]: Finished difference Result 3056 states and 5455 transitions. [2021-12-16 02:01:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:19,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:19,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:19,308 INFO L225 Difference]: With dead ends: 3056 [2021-12-16 02:01:19,308 INFO L226 Difference]: Without dead ends: 2675 [2021-12-16 02:01:19,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:01:19,311 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 5042 mSDsluCounter, 12581 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5063 SdHoareTripleChecker+Valid, 17194 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:19,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5063 Valid, 17194 Invalid, 1484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-12-16 02:01:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2523. [2021-12-16 02:01:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8235530546623795) internal successors, (4537), 2490 states have internal predecessors, (4537), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4591 transitions. [2021-12-16 02:01:19,365 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4591 transitions. Word has length 189 [2021-12-16 02:01:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:19,366 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4591 transitions. [2021-12-16 02:01:19,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4591 transitions. [2021-12-16 02:01:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:19,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:19,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:19,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:01:19,369 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1024367305, now seen corresponding path program 1 times [2021-12-16 02:01:19,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:19,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194887089] [2021-12-16 02:01:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:19,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:19,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:19,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194887089] [2021-12-16 02:01:19,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194887089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:19,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:19,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:19,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005490182] [2021-12-16 02:01:19,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:19,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:19,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:19,489 INFO L87 Difference]: Start difference. First operand 2523 states and 4591 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:20,925 INFO L93 Difference]: Finished difference Result 3055 states and 5453 transitions. [2021-12-16 02:01:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:20,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:20,936 INFO L225 Difference]: With dead ends: 3055 [2021-12-16 02:01:20,936 INFO L226 Difference]: Without dead ends: 2674 [2021-12-16 02:01:20,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:01:20,940 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5324 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5345 SdHoareTripleChecker+Valid, 17263 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:20,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5345 Valid, 17263 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-12-16 02:01:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2523. [2021-12-16 02:01:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.822347266881029) internal successors, (4534), 2490 states have internal predecessors, (4534), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4588 transitions. [2021-12-16 02:01:21,006 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4588 transitions. Word has length 189 [2021-12-16 02:01:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:21,007 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4588 transitions. [2021-12-16 02:01:21,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:21,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4588 transitions. [2021-12-16 02:01:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:21,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:21,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:21,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:01:21,010 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1228031685, now seen corresponding path program 1 times [2021-12-16 02:01:21,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:21,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732689338] [2021-12-16 02:01:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:21,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:21,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:21,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732689338] [2021-12-16 02:01:21,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732689338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:21,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:21,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:21,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461148743] [2021-12-16 02:01:21,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:21,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:21,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:21,162 INFO L87 Difference]: Start difference. First operand 2523 states and 4588 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:22,963 INFO L93 Difference]: Finished difference Result 3081 states and 5495 transitions. [2021-12-16 02:01:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:22,972 INFO L225 Difference]: With dead ends: 3081 [2021-12-16 02:01:22,972 INFO L226 Difference]: Without dead ends: 2700 [2021-12-16 02:01:22,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:22,975 INFO L933 BasicCegarLoop]: 4650 mSDtfsCounter, 5141 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21473 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:22,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21473 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:01:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2021-12-16 02:01:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2523. [2021-12-16 02:01:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8219453376205788) internal successors, (4533), 2490 states have internal predecessors, (4533), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4587 transitions. [2021-12-16 02:01:23,025 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4587 transitions. Word has length 189 [2021-12-16 02:01:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:23,026 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4587 transitions. [2021-12-16 02:01:23,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4587 transitions. [2021-12-16 02:01:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:23,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:23,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:23,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:01:23,029 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:23,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1798303491, now seen corresponding path program 1 times [2021-12-16 02:01:23,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:23,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216686822] [2021-12-16 02:01:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:23,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:23,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:23,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216686822] [2021-12-16 02:01:23,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216686822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:23,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:23,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:23,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632199822] [2021-12-16 02:01:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:23,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:23,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:23,165 INFO L87 Difference]: Start difference. First operand 2523 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:24,480 INFO L93 Difference]: Finished difference Result 3080 states and 5490 transitions. [2021-12-16 02:01:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:24,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:24,488 INFO L225 Difference]: With dead ends: 3080 [2021-12-16 02:01:24,488 INFO L226 Difference]: Without dead ends: 2699 [2021-12-16 02:01:24,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:24,491 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5316 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5337 SdHoareTripleChecker+Valid, 17305 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:24,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5337 Valid, 17305 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-12-16 02:01:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2523. [2021-12-16 02:01:24,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8215434083601285) internal successors, (4532), 2490 states have internal predecessors, (4532), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4586 transitions. [2021-12-16 02:01:24,553 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4586 transitions. Word has length 189 [2021-12-16 02:01:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:24,554 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4586 transitions. [2021-12-16 02:01:24,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4586 transitions. [2021-12-16 02:01:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:24,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:24,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:24,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:01:24,557 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:24,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1092794619, now seen corresponding path program 1 times [2021-12-16 02:01:24,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:24,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114200317] [2021-12-16 02:01:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:24,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:24,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:24,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114200317] [2021-12-16 02:01:24,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114200317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:24,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:24,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:01:24,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910027647] [2021-12-16 02:01:24,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:24,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:01:24,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:24,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:01:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:24,699 INFO L87 Difference]: Start difference. First operand 2523 states and 4586 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:27,455 INFO L93 Difference]: Finished difference Result 3633 states and 6375 transitions. [2021-12-16 02:01:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:01:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:27,465 INFO L225 Difference]: With dead ends: 3633 [2021-12-16 02:01:27,466 INFO L226 Difference]: Without dead ends: 3252 [2021-12-16 02:01:27,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:01:27,471 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 6125 mSDsluCounter, 18225 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6146 SdHoareTripleChecker+Valid, 23239 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:27,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6146 Valid, 23239 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 02:01:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2021-12-16 02:01:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 2924. [2021-12-16 02:01:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7901364113326337) internal successors, (5118), 2862 states have internal predecessors, (5118), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5221 transitions. [2021-12-16 02:01:27,600 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5221 transitions. Word has length 189 [2021-12-16 02:01:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:27,601 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5221 transitions. [2021-12-16 02:01:27,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5221 transitions. [2021-12-16 02:01:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:27,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:27,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:27,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:01:27,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:27,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1878792509, now seen corresponding path program 1 times [2021-12-16 02:01:27,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:27,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752977997] [2021-12-16 02:01:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:27,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:27,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:27,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752977997] [2021-12-16 02:01:27,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752977997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:27,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:27,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:27,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757427132] [2021-12-16 02:01:27,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:27,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:27,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:27,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:27,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:27,752 INFO L87 Difference]: Start difference. First operand 2924 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:29,090 INFO L93 Difference]: Finished difference Result 4077 states and 7097 transitions. [2021-12-16 02:01:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:29,110 INFO L225 Difference]: With dead ends: 4077 [2021-12-16 02:01:29,110 INFO L226 Difference]: Without dead ends: 3295 [2021-12-16 02:01:29,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:29,114 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5401 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 17250 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:29,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5422 Valid, 17250 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-12-16 02:01:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2924. [2021-12-16 02:01:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7894368660370759) internal successors, (5116), 2862 states have internal predecessors, (5116), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5219 transitions. [2021-12-16 02:01:29,187 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5219 transitions. Word has length 189 [2021-12-16 02:01:29,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:29,187 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5219 transitions. [2021-12-16 02:01:29,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5219 transitions. [2021-12-16 02:01:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:29,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:29,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:29,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:01:29,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1211410619, now seen corresponding path program 1 times [2021-12-16 02:01:29,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:29,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103154389] [2021-12-16 02:01:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:29,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:29,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:29,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:29,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103154389] [2021-12-16 02:01:29,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103154389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:29,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:29,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:29,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408996819] [2021-12-16 02:01:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:29,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:29,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:29,322 INFO L87 Difference]: Start difference. First operand 2924 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:30,591 INFO L93 Difference]: Finished difference Result 4074 states and 7085 transitions. [2021-12-16 02:01:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:30,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:30,600 INFO L225 Difference]: With dead ends: 4074 [2021-12-16 02:01:30,600 INFO L226 Difference]: Without dead ends: 3292 [2021-12-16 02:01:30,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:30,603 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 5313 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 17293 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:30,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5334 Valid, 17293 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-12-16 02:01:30,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2924. [2021-12-16 02:01:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.788737320741518) internal successors, (5114), 2862 states have internal predecessors, (5114), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5217 transitions. [2021-12-16 02:01:30,666 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5217 transitions. Word has length 189 [2021-12-16 02:01:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:30,667 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5217 transitions. [2021-12-16 02:01:30,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5217 transitions. [2021-12-16 02:01:30,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:30,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:30,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:30,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:01:30,669 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 888327811, now seen corresponding path program 1 times [2021-12-16 02:01:30,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:30,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417133284] [2021-12-16 02:01:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:30,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:30,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:30,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417133284] [2021-12-16 02:01:30,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417133284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:30,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:30,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:30,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645304142] [2021-12-16 02:01:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:30,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:30,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:30,780 INFO L87 Difference]: Start difference. First operand 2924 states and 5217 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:32,265 INFO L93 Difference]: Finished difference Result 4071 states and 7073 transitions. [2021-12-16 02:01:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:32,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:32,272 INFO L225 Difference]: With dead ends: 4071 [2021-12-16 02:01:32,272 INFO L226 Difference]: Without dead ends: 3289 [2021-12-16 02:01:32,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:32,274 INFO L933 BasicCegarLoop]: 4630 mSDtfsCounter, 5134 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 21453 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:32,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5155 Valid, 21453 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-16 02:01:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2924. [2021-12-16 02:01:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7880377754459602) internal successors, (5112), 2862 states have internal predecessors, (5112), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5215 transitions. [2021-12-16 02:01:32,346 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5215 transitions. Word has length 189 [2021-12-16 02:01:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:32,346 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5215 transitions. [2021-12-16 02:01:32,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5215 transitions. [2021-12-16 02:01:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:32,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:32,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:32,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:01:32,349 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:32,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1233155973, now seen corresponding path program 1 times [2021-12-16 02:01:32,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:32,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920952043] [2021-12-16 02:01:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:32,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:32,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:32,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:32,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920952043] [2021-12-16 02:01:32,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920952043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:32,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:32,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:32,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055418065] [2021-12-16 02:01:32,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:32,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:32,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:32,503 INFO L87 Difference]: Start difference. First operand 2924 states and 5215 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:33,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:33,809 INFO L93 Difference]: Finished difference Result 4068 states and 7061 transitions. [2021-12-16 02:01:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:33,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:33,817 INFO L225 Difference]: With dead ends: 4068 [2021-12-16 02:01:33,818 INFO L226 Difference]: Without dead ends: 3286 [2021-12-16 02:01:33,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:33,821 INFO L933 BasicCegarLoop]: 4624 mSDtfsCounter, 5312 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5333 SdHoareTripleChecker+Valid, 17283 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:33,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5333 Valid, 17283 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-12-16 02:01:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2924. [2021-12-16 02:01:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7873382301504022) internal successors, (5110), 2862 states have internal predecessors, (5110), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:33,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5213 transitions. [2021-12-16 02:01:33,890 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5213 transitions. Word has length 189 [2021-12-16 02:01:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:33,891 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5213 transitions. [2021-12-16 02:01:33,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5213 transitions. [2021-12-16 02:01:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:33,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:33,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:33,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:01:33,893 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:33,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:33,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2080856509, now seen corresponding path program 1 times [2021-12-16 02:01:33,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:33,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266274212] [2021-12-16 02:01:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:33,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:34,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266274212] [2021-12-16 02:01:34,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266274212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:34,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:34,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:34,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124382228] [2021-12-16 02:01:34,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:34,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:34,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:34,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:34,010 INFO L87 Difference]: Start difference. First operand 2924 states and 5213 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:35,554 INFO L93 Difference]: Finished difference Result 4062 states and 7043 transitions. [2021-12-16 02:01:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:35,561 INFO L225 Difference]: With dead ends: 4062 [2021-12-16 02:01:35,561 INFO L226 Difference]: Without dead ends: 3280 [2021-12-16 02:01:35,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:35,564 INFO L933 BasicCegarLoop]: 4618 mSDtfsCounter, 5131 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5152 SdHoareTripleChecker+Valid, 21441 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:35,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5152 Valid, 21441 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-12-16 02:01:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2924. [2021-12-16 02:01:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7866386848548443) internal successors, (5108), 2862 states have internal predecessors, (5108), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5211 transitions. [2021-12-16 02:01:35,633 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5211 transitions. Word has length 189 [2021-12-16 02:01:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:35,634 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5211 transitions. [2021-12-16 02:01:35,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5211 transitions. [2021-12-16 02:01:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:35,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:35,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:35,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:01:35,636 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1602841729, now seen corresponding path program 1 times [2021-12-16 02:01:35,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:35,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571296359] [2021-12-16 02:01:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:35,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:35,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:35,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571296359] [2021-12-16 02:01:35,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571296359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:35,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:35,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:35,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366401853] [2021-12-16 02:01:35,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:35,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:35,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:35,757 INFO L87 Difference]: Start difference. First operand 2924 states and 5211 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:37,408 INFO L93 Difference]: Finished difference Result 4059 states and 7031 transitions. [2021-12-16 02:01:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:37,417 INFO L225 Difference]: With dead ends: 4059 [2021-12-16 02:01:37,418 INFO L226 Difference]: Without dead ends: 3277 [2021-12-16 02:01:37,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:37,421 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 5129 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:37,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5150 Valid, 21437 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:01:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-16 02:01:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2924. [2021-12-16 02:01:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7859391395592865) internal successors, (5106), 2862 states have internal predecessors, (5106), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5209 transitions. [2021-12-16 02:01:37,489 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5209 transitions. Word has length 189 [2021-12-16 02:01:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:37,489 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5209 transitions. [2021-12-16 02:01:37,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5209 transitions. [2021-12-16 02:01:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:37,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:37,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:37,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:01:37,492 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash 197650051, now seen corresponding path program 1 times [2021-12-16 02:01:37,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:37,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241629637] [2021-12-16 02:01:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:37,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:37,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:37,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241629637] [2021-12-16 02:01:37,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241629637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:37,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:37,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:37,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861455206] [2021-12-16 02:01:37,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:37,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:37,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:37,607 INFO L87 Difference]: Start difference. First operand 2924 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:38,944 INFO L93 Difference]: Finished difference Result 4056 states and 7019 transitions. [2021-12-16 02:01:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:38,954 INFO L225 Difference]: With dead ends: 4056 [2021-12-16 02:01:38,954 INFO L226 Difference]: Without dead ends: 3274 [2021-12-16 02:01:38,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:38,957 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5304 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 17269 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:38,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5325 Valid, 17269 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-12-16 02:01:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2924. [2021-12-16 02:01:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7852395942637285) internal successors, (5104), 2862 states have internal predecessors, (5104), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5207 transitions. [2021-12-16 02:01:39,026 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5207 transitions. Word has length 189 [2021-12-16 02:01:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:39,026 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5207 transitions. [2021-12-16 02:01:39,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5207 transitions. [2021-12-16 02:01:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:39,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:39,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:39,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:01:39,029 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2091983937, now seen corresponding path program 1 times [2021-12-16 02:01:39,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:39,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441459420] [2021-12-16 02:01:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:39,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:39,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:39,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:39,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441459420] [2021-12-16 02:01:39,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441459420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:39,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:39,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:39,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127244210] [2021-12-16 02:01:39,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:39,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:39,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:39,137 INFO L87 Difference]: Start difference. First operand 2924 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:40,410 INFO L93 Difference]: Finished difference Result 4053 states and 7007 transitions. [2021-12-16 02:01:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:40,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:40,417 INFO L225 Difference]: With dead ends: 4053 [2021-12-16 02:01:40,417 INFO L226 Difference]: Without dead ends: 3271 [2021-12-16 02:01:40,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:40,420 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 5354 mSDsluCounter, 12655 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5375 SdHoareTripleChecker+Valid, 17232 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:40,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5375 Valid, 17232 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2021-12-16 02:01:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 2924. [2021-12-16 02:01:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7845400489681706) internal successors, (5102), 2862 states have internal predecessors, (5102), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5205 transitions. [2021-12-16 02:01:40,490 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5205 transitions. Word has length 189 [2021-12-16 02:01:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:40,490 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5205 transitions. [2021-12-16 02:01:40,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:40,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5205 transitions. [2021-12-16 02:01:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:40,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:40,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:40,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:01:40,493 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -756402493, now seen corresponding path program 1 times [2021-12-16 02:01:40,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731972237] [2021-12-16 02:01:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:40,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:40,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:40,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731972237] [2021-12-16 02:01:40,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731972237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:40,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:40,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:40,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267692082] [2021-12-16 02:01:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:40,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:40,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:40,624 INFO L87 Difference]: Start difference. First operand 2924 states and 5205 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:41,913 INFO L93 Difference]: Finished difference Result 4050 states and 6995 transitions. [2021-12-16 02:01:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:41,921 INFO L225 Difference]: With dead ends: 4050 [2021-12-16 02:01:41,921 INFO L226 Difference]: Without dead ends: 3268 [2021-12-16 02:01:41,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:41,927 INFO L933 BasicCegarLoop]: 4602 mSDtfsCounter, 5298 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5319 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:41,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5319 Valid, 17259 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-16 02:01:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2924. [2021-12-16 02:01:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7838405036726128) internal successors, (5100), 2862 states have internal predecessors, (5100), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5203 transitions. [2021-12-16 02:01:42,084 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5203 transitions. Word has length 189 [2021-12-16 02:01:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:42,085 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5203 transitions. [2021-12-16 02:01:42,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5203 transitions. [2021-12-16 02:01:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:42,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:42,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:42,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:01:42,088 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:42,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1679569919, now seen corresponding path program 1 times [2021-12-16 02:01:42,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341767555] [2021-12-16 02:01:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:42,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:42,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:42,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:42,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341767555] [2021-12-16 02:01:42,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341767555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:42,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:42,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:42,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034422028] [2021-12-16 02:01:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:42,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:42,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:42,214 INFO L87 Difference]: Start difference. First operand 2924 states and 5203 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:43,458 INFO L93 Difference]: Finished difference Result 4047 states and 6983 transitions. [2021-12-16 02:01:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:43,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:43,464 INFO L225 Difference]: With dead ends: 4047 [2021-12-16 02:01:43,464 INFO L226 Difference]: Without dead ends: 3265 [2021-12-16 02:01:43,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:43,467 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 5296 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5317 SdHoareTripleChecker+Valid, 17255 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:43,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5317 Valid, 17255 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:01:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-16 02:01:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2924. [2021-12-16 02:01:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.783140958377055) internal successors, (5098), 2862 states have internal predecessors, (5098), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5201 transitions. [2021-12-16 02:01:43,540 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5201 transitions. Word has length 189 [2021-12-16 02:01:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:43,541 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5201 transitions. [2021-12-16 02:01:43,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5201 transitions. [2021-12-16 02:01:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:43,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:43,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:43,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:01:43,543 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:43,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1293707517, now seen corresponding path program 1 times [2021-12-16 02:01:43,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:43,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738509995] [2021-12-16 02:01:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:43,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:43,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:43,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738509995] [2021-12-16 02:01:43,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738509995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:43,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:43,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:43,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339594699] [2021-12-16 02:01:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:43,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:43,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:43,684 INFO L87 Difference]: Start difference. First operand 2924 states and 5201 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:44,970 INFO L93 Difference]: Finished difference Result 4044 states and 6971 transitions. [2021-12-16 02:01:44,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:44,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:44,975 INFO L225 Difference]: With dead ends: 4044 [2021-12-16 02:01:44,975 INFO L226 Difference]: Without dead ends: 3262 [2021-12-16 02:01:44,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:44,978 INFO L933 BasicCegarLoop]: 4592 mSDtfsCounter, 5297 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 17249 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:44,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5318 Valid, 17249 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-12-16 02:01:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2924. [2021-12-16 02:01:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.782441413081497) internal successors, (5096), 2862 states have internal predecessors, (5096), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5199 transitions. [2021-12-16 02:01:45,049 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5199 transitions. Word has length 189 [2021-12-16 02:01:45,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:45,050 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5199 transitions. [2021-12-16 02:01:45,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:45,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5199 transitions. [2021-12-16 02:01:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:45,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:45,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:45,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:01:45,052 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1558355007, now seen corresponding path program 1 times [2021-12-16 02:01:45,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:45,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736317666] [2021-12-16 02:01:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:45,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:45,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:45,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736317666] [2021-12-16 02:01:45,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736317666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:45,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:45,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:45,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257226502] [2021-12-16 02:01:45,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:45,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:45,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:45,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:45,162 INFO L87 Difference]: Start difference. First operand 2924 states and 5199 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:46,539 INFO L93 Difference]: Finished difference Result 4038 states and 6953 transitions. [2021-12-16 02:01:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:46,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:46,544 INFO L225 Difference]: With dead ends: 4038 [2021-12-16 02:01:46,544 INFO L226 Difference]: Without dead ends: 3256 [2021-12-16 02:01:46,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:46,547 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 5293 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 17243 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:46,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5314 Valid, 17243 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2021-12-16 02:01:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 2924. [2021-12-16 02:01:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7817418677859391) internal successors, (5094), 2862 states have internal predecessors, (5094), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5197 transitions. [2021-12-16 02:01:46,624 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5197 transitions. Word has length 189 [2021-12-16 02:01:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:46,625 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5197 transitions. [2021-12-16 02:01:46,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5197 transitions. [2021-12-16 02:01:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:46,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:46,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:46,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:01:46,627 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1413433343, now seen corresponding path program 1 times [2021-12-16 02:01:46,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:46,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744238417] [2021-12-16 02:01:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:46,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:46,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:46,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:46,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744238417] [2021-12-16 02:01:46,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744238417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:46,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:46,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:46,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602791643] [2021-12-16 02:01:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:46,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:46,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:46,770 INFO L87 Difference]: Start difference. First operand 2924 states and 5197 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:48,052 INFO L93 Difference]: Finished difference Result 4035 states and 6941 transitions. [2021-12-16 02:01:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:48,058 INFO L225 Difference]: With dead ends: 4035 [2021-12-16 02:01:48,058 INFO L226 Difference]: Without dead ends: 3253 [2021-12-16 02:01:48,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:48,061 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 5291 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5312 SdHoareTripleChecker+Valid, 17239 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:48,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5312 Valid, 17239 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2021-12-16 02:01:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2924. [2021-12-16 02:01:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7810423224903813) internal successors, (5092), 2862 states have internal predecessors, (5092), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5195 transitions. [2021-12-16 02:01:48,142 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5195 transitions. Word has length 189 [2021-12-16 02:01:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5195 transitions. [2021-12-16 02:01:48,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5195 transitions. [2021-12-16 02:01:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:48,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:48,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:48,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 02:01:48,145 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash -984554495, now seen corresponding path program 1 times [2021-12-16 02:01:48,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:48,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435875850] [2021-12-16 02:01:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:48,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:48,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:48,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435875850] [2021-12-16 02:01:48,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435875850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:48,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:48,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:01:48,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888303208] [2021-12-16 02:01:48,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:48,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:01:48,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:48,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:01:48,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:48,286 INFO L87 Difference]: Start difference. First operand 2924 states and 5195 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:51,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:51,003 INFO L93 Difference]: Finished difference Result 5322 states and 8961 transitions. [2021-12-16 02:01:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 02:01:51,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:51,010 INFO L225 Difference]: With dead ends: 5322 [2021-12-16 02:01:51,011 INFO L226 Difference]: Without dead ends: 4540 [2021-12-16 02:01:51,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-16 02:01:51,013 INFO L933 BasicCegarLoop]: 4915 mSDtfsCounter, 6344 mSDsluCounter, 18210 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6380 SdHoareTripleChecker+Valid, 23125 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:51,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6380 Valid, 23125 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 02:01:51,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2021-12-16 02:01:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 3720. [2021-12-16 02:01:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7321279554937412) internal successors, (6227), 3602 states have internal predecessors, (6227), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:01:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6430 transitions. [2021-12-16 02:01:51,192 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6430 transitions. Word has length 189 [2021-12-16 02:01:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:51,192 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6430 transitions. [2021-12-16 02:01:51,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6430 transitions. [2021-12-16 02:01:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:51,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:51,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:51,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 02:01:51,194 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash -646266945, now seen corresponding path program 1 times [2021-12-16 02:01:51,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:51,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264725083] [2021-12-16 02:01:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:51,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:51,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:51,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264725083] [2021-12-16 02:01:51,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264725083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:51,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:51,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:51,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340777067] [2021-12-16 02:01:51,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:51,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:51,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:51,357 INFO L87 Difference]: Start difference. First operand 3720 states and 6430 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:52,961 INFO L93 Difference]: Finished difference Result 5965 states and 9952 transitions. [2021-12-16 02:01:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:52,976 INFO L225 Difference]: With dead ends: 5965 [2021-12-16 02:01:52,977 INFO L226 Difference]: Without dead ends: 4387 [2021-12-16 02:01:52,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:52,984 INFO L933 BasicCegarLoop]: 4562 mSDtfsCounter, 5135 mSDsluCounter, 16819 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21381 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:52,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 21381 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-12-16 02:01:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3720. [2021-12-16 02:01:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7310152990264256) internal successors, (6223), 3602 states have internal predecessors, (6223), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:01:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6426 transitions. [2021-12-16 02:01:53,189 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6426 transitions. Word has length 189 [2021-12-16 02:01:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:53,189 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6426 transitions. [2021-12-16 02:01:53,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6426 transitions. [2021-12-16 02:01:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:53,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:53,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:53,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 02:01:53,191 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:53,192 INFO L85 PathProgramCache]: Analyzing trace with hash -219712447, now seen corresponding path program 1 times [2021-12-16 02:01:53,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:53,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309048186] [2021-12-16 02:01:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:53,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:53,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:53,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:53,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:53,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:53,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309048186] [2021-12-16 02:01:53,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309048186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:53,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:53,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:53,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982375414] [2021-12-16 02:01:53,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:53,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:53,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:53,320 INFO L87 Difference]: Start difference. First operand 3720 states and 6426 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:54,869 INFO L93 Difference]: Finished difference Result 5956 states and 9922 transitions. [2021-12-16 02:01:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:54,877 INFO L225 Difference]: With dead ends: 5956 [2021-12-16 02:01:54,877 INFO L226 Difference]: Without dead ends: 4378 [2021-12-16 02:01:54,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:54,881 INFO L933 BasicCegarLoop]: 4571 mSDtfsCounter, 5111 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 21392 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:54,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5132 Valid, 21392 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2021-12-16 02:01:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 3720. [2021-12-16 02:01:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.72990264255911) internal successors, (6219), 3602 states have internal predecessors, (6219), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:01:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6422 transitions. [2021-12-16 02:01:55,019 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6422 transitions. Word has length 189 [2021-12-16 02:01:55,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:55,020 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6422 transitions. [2021-12-16 02:01:55,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6422 transitions. [2021-12-16 02:01:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:55,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:55,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:55,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 02:01:55,022 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -760141953, now seen corresponding path program 1 times [2021-12-16 02:01:55,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:55,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000592248] [2021-12-16 02:01:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:55,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:55,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:55,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:55,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000592248] [2021-12-16 02:01:55,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000592248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:55,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:55,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:55,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798979962] [2021-12-16 02:01:55,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:55,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:55,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:55,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:55,134 INFO L87 Difference]: Start difference. First operand 3720 states and 6422 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:56,739 INFO L93 Difference]: Finished difference Result 5947 states and 9892 transitions. [2021-12-16 02:01:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:56,746 INFO L225 Difference]: With dead ends: 5947 [2021-12-16 02:01:56,746 INFO L226 Difference]: Without dead ends: 4369 [2021-12-16 02:01:56,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:56,749 INFO L933 BasicCegarLoop]: 4567 mSDtfsCounter, 5109 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5130 SdHoareTripleChecker+Valid, 21388 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:56,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5130 Valid, 21388 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-12-16 02:01:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3720. [2021-12-16 02:01:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7287899860917941) internal successors, (6215), 3602 states have internal predecessors, (6215), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:01:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6418 transitions. [2021-12-16 02:01:56,896 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6418 transitions. Word has length 189 [2021-12-16 02:01:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:56,896 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6418 transitions. [2021-12-16 02:01:56,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6418 transitions. [2021-12-16 02:01:56,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:56,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:56,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:56,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 02:01:56,898 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:56,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash -916122495, now seen corresponding path program 1 times [2021-12-16 02:01:56,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:56,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523690111] [2021-12-16 02:01:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:56,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:57,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:57,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523690111] [2021-12-16 02:01:57,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523690111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:57,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:57,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:57,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502334463] [2021-12-16 02:01:57,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:57,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:57,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:57,068 INFO L87 Difference]: Start difference. First operand 3720 states and 6418 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:58,390 INFO L93 Difference]: Finished difference Result 5938 states and 9862 transitions. [2021-12-16 02:01:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:01:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:58,397 INFO L225 Difference]: With dead ends: 5938 [2021-12-16 02:01:58,397 INFO L226 Difference]: Without dead ends: 4360 [2021-12-16 02:01:58,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:58,402 INFO L933 BasicCegarLoop]: 4561 mSDtfsCounter, 5287 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 17218 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:58,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 17218 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:01:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2021-12-16 02:01:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 3720. [2021-12-16 02:01:58,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7276773296244785) internal successors, (6211), 3602 states have internal predecessors, (6211), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:01:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6414 transitions. [2021-12-16 02:01:58,543 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6414 transitions. Word has length 189 [2021-12-16 02:01:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:58,544 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6414 transitions. [2021-12-16 02:01:58,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6414 transitions. [2021-12-16 02:01:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:01:58,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:58,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:58,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 02:01:58,546 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:58,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash -505512129, now seen corresponding path program 1 times [2021-12-16 02:01:58,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:58,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727473344] [2021-12-16 02:01:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:58,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:58,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727473344] [2021-12-16 02:01:58,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727473344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:58,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:58,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:01:58,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064254405] [2021-12-16 02:01:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:58,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:01:58,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:01:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:58,668 INFO L87 Difference]: Start difference. First operand 3720 states and 6414 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)