./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.10.cil.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/systemc/transmitter.10.cil.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 c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:08:59,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:08:59,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:08:59,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:08:59,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:08:59,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:08:59,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:08:59,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:08:59,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:08:59,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:08:59,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:08:59,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:08:59,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:08:59,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:08:59,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:08:59,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:08:59,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:08:59,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:08:59,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:08:59,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:08:59,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:08:59,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:08:59,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:08:59,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:08:59,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:08:59,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:08:59,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:08:59,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:08:59,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:08:59,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:08:59,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:08:59,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:08:59,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:08:59,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:08:59,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:08:59,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:08:59,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:08:59,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:08:59,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:08:59,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:08:59,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:08:59,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:08:59,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:08:59,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:08:59,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:08:59,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:08:59,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:08:59,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:08:59,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:08:59,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:08:59,752 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:08:59,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:08:59,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:08:59,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:08:59,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:08:59,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:08:59,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:08:59,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:08:59,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:08:59,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:08:59,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:08:59,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:08:59,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:08:59,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:08:59,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:08:59,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:08:59,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:08:59,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:08:59,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:08:59,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:08:59,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:08:59,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:08:59,755 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:08:59,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:08:59,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:08:59,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:08:59,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2021-12-16 01:08:59,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:08:59,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:08:59,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:08:59,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:08:59,988 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:08:59,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.10.cil.c [2021-12-16 01:09:00,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e677e5a0/e0ee30b491a149a7b26968dd3bd9857a/FLAG1f2f8da99 [2021-12-16 01:09:00,458 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:09:00,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c [2021-12-16 01:09:00,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e677e5a0/e0ee30b491a149a7b26968dd3bd9857a/FLAG1f2f8da99 [2021-12-16 01:09:00,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e677e5a0/e0ee30b491a149a7b26968dd3bd9857a [2021-12-16 01:09:00,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:09:00,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:09:00,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:09:00,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:09:00,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:09:00,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bc3c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00, skipping insertion in model container [2021-12-16 01:09:00,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:09:00,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:09:00,683 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/systemc/transmitter.10.cil.c[706,719] [2021-12-16 01:09:00,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:09:00,792 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:09:00,799 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/systemc/transmitter.10.cil.c[706,719] [2021-12-16 01:09:00,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:09:00,872 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:09:00,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00 WrapperNode [2021-12-16 01:09:00,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:09:00,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:09:00,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:09:00,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:09:00,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,920 INFO L137 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2021-12-16 01:09:00,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:09:00,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:09:00,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:09:00,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:09:00,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:09:00,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:09:00,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:09:00,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:09:00,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (1/1) ... [2021-12-16 01:09:00,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:09:01,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:09:01,012 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 01:09:01,014 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 01:09:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:09:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:09:01,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:09:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:09:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:09:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:09:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:09:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:09:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:09:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:09:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:09:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:09:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:09:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:09:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:09:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:09:01,110 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:09:01,112 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:09:01,647 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:09:01,655 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:09:01,656 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-16 01:09:01,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:09:01 BoogieIcfgContainer [2021-12-16 01:09:01,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:09:01,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:09:01,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:09:01,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:09:01,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:09:00" (1/3) ... [2021-12-16 01:09:01,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6343b67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:09:01, skipping insertion in model container [2021-12-16 01:09:01,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:09:00" (2/3) ... [2021-12-16 01:09:01,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6343b67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:09:01, skipping insertion in model container [2021-12-16 01:09:01,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:09:01" (3/3) ... [2021-12-16 01:09:01,665 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2021-12-16 01:09:01,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:09:01,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:09:01,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:09:01,706 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 01:09:01,707 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:09:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-16 01:09:01,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:01,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:01,738 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] [2021-12-16 01:09:01,739 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1953724887, now seen corresponding path program 1 times [2021-12-16 01:09:01,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:01,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574350840] [2021-12-16 01:09:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:01,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:01,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:02,115 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 01:09:02,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:02,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574350840] [2021-12-16 01:09:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574350840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:02,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:02,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:09:02,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261634845] [2021-12-16 01:09:02,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:02,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:09:02,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:09:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:09:02,158 INFO L87 Difference]: Start difference. First operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 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 01:09:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:03,127 INFO L93 Difference]: Finished difference Result 765 states and 1265 transitions. [2021-12-16 01:09:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:09:03,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:03,139 INFO L225 Difference]: With dead ends: 765 [2021-12-16 01:09:03,140 INFO L226 Difference]: Without dead ends: 441 [2021-12-16 01:09:03,144 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 01:09:03,146 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 868 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:03,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 918 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:09:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-12-16 01:09:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2021-12-16 01:09:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5597269624573378) internal successors, (457), 294 states have internal predecessors, (457), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-16 01:09:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 503 transitions. [2021-12-16 01:09:03,202 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 503 transitions. Word has length 163 [2021-12-16 01:09:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:03,203 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 503 transitions. [2021-12-16 01:09:03,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 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 01:09:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 503 transitions. [2021-12-16 01:09:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:03,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:03,208 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] [2021-12-16 01:09:03,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:09:03,209 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:03,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1342455829, now seen corresponding path program 1 times [2021-12-16 01:09:03,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:03,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703097343] [2021-12-16 01:09:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:03,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:03,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:03,340 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 01:09:03,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703097343] [2021-12-16 01:09:03,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703097343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:03,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:03,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:09:03,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940033198] [2021-12-16 01:09:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:03,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:09:03,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:09:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:09:03,343 INFO L87 Difference]: Start difference. First operand 323 states and 503 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 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 01:09:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:04,236 INFO L93 Difference]: Finished difference Result 748 states and 1181 transitions. [2021-12-16 01:09:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:09:04,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:04,239 INFO L225 Difference]: With dead ends: 748 [2021-12-16 01:09:04,239 INFO L226 Difference]: Without dead ends: 441 [2021-12-16 01:09:04,240 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 01:09:04,241 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 855 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:04,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 904 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:09:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-12-16 01:09:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2021-12-16 01:09:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5563139931740615) internal successors, (456), 294 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-16 01:09:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 502 transitions. [2021-12-16 01:09:04,272 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 502 transitions. Word has length 163 [2021-12-16 01:09:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:04,274 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 502 transitions. [2021-12-16 01:09:04,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 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 01:09:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 502 transitions. [2021-12-16 01:09:04,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:04,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:04,280 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] [2021-12-16 01:09:04,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:09:04,281 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:04,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash -19276883, now seen corresponding path program 1 times [2021-12-16 01:09:04,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:04,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374254518] [2021-12-16 01:09:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:04,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:04,420 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 01:09:04,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:04,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374254518] [2021-12-16 01:09:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374254518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:04,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:04,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:09:04,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619701020] [2021-12-16 01:09:04,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:04,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:09:04,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:04,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:09:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:09:04,423 INFO L87 Difference]: Start difference. First operand 323 states and 502 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 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 01:09:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:06,195 INFO L93 Difference]: Finished difference Result 1182 states and 1892 transitions. [2021-12-16 01:09:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:09:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:06,199 INFO L225 Difference]: With dead ends: 1182 [2021-12-16 01:09:06,200 INFO L226 Difference]: Without dead ends: 877 [2021-12-16 01:09:06,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:09:06,202 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1296 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:06,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 1455 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 01:09:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-12-16 01:09:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 641. [2021-12-16 01:09:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 586 states have (on average 1.568259385665529) internal successors, (919), 588 states have internal predecessors, (919), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-16 01:09:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1004 transitions. [2021-12-16 01:09:06,239 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1004 transitions. Word has length 163 [2021-12-16 01:09:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:06,240 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1004 transitions. [2021-12-16 01:09:06,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 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 01:09:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1004 transitions. [2021-12-16 01:09:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:06,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:06,242 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] [2021-12-16 01:09:06,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:09:06,242 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:06,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:06,243 INFO L85 PathProgramCache]: Analyzing trace with hash -951057460, now seen corresponding path program 1 times [2021-12-16 01:09:06,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:06,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969527150] [2021-12-16 01:09:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:06,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:06,372 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 01:09:06,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:06,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969527150] [2021-12-16 01:09:06,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969527150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:06,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:06,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:06,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873870220] [2021-12-16 01:09:06,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:06,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:06,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:06,375 INFO L87 Difference]: Start difference. First operand 641 states and 1004 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:07,534 INFO L93 Difference]: Finished difference Result 1516 states and 2413 transitions. [2021-12-16 01:09:07,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:07,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:07,538 INFO L225 Difference]: With dead ends: 1516 [2021-12-16 01:09:07,538 INFO L226 Difference]: Without dead ends: 893 [2021-12-16 01:09:07,540 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 01:09:07,541 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 934 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:07,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 1340 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:09:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-12-16 01:09:07,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 641. [2021-12-16 01:09:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 586 states have (on average 1.5648464163822526) internal successors, (917), 588 states have internal predecessors, (917), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-16 01:09:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1002 transitions. [2021-12-16 01:09:07,573 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1002 transitions. Word has length 163 [2021-12-16 01:09:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:07,574 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1002 transitions. [2021-12-16 01:09:07,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1002 transitions. [2021-12-16 01:09:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:07,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:07,576 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] [2021-12-16 01:09:07,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:09:07,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1491486966, now seen corresponding path program 1 times [2021-12-16 01:09:07,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:07,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252022877] [2021-12-16 01:09:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:07,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:07,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:07,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:07,675 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 01:09:07,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:07,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252022877] [2021-12-16 01:09:07,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252022877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:07,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:07,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:07,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276187557] [2021-12-16 01:09:07,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:07,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:07,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:07,677 INFO L87 Difference]: Start difference. First operand 641 states and 1002 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:10,344 INFO L93 Difference]: Finished difference Result 2097 states and 3321 transitions. [2021-12-16 01:09:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:09:10,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:10,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:10,362 INFO L225 Difference]: With dead ends: 2097 [2021-12-16 01:09:10,363 INFO L226 Difference]: Without dead ends: 1474 [2021-12-16 01:09:10,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:09:10,370 INFO L933 BasicCegarLoop]: 1028 mSDtfsCounter, 1415 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 3176 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:10,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 2718 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3176 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-16 01:09:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-12-16 01:09:10,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 937. [2021-12-16 01:09:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 857 states have (on average 1.557759626604434) internal successors, (1335), 860 states have internal predecessors, (1335), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-16 01:09:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1458 transitions. [2021-12-16 01:09:10,423 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1458 transitions. Word has length 163 [2021-12-16 01:09:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:10,423 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1458 transitions. [2021-12-16 01:09:10,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1458 transitions. [2021-12-16 01:09:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:10,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:10,425 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] [2021-12-16 01:09:10,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:09:10,426 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1647467508, now seen corresponding path program 1 times [2021-12-16 01:09:10,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:10,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558392343] [2021-12-16 01:09:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:10,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:10,542 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 01:09:10,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:10,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558392343] [2021-12-16 01:09:10,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558392343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:10,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:10,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:10,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498650337] [2021-12-16 01:09:10,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:10,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:10,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:10,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:10,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:10,544 INFO L87 Difference]: Start difference. First operand 937 states and 1458 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:13,156 INFO L93 Difference]: Finished difference Result 3226 states and 5101 transitions. [2021-12-16 01:09:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:09:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:13,165 INFO L225 Difference]: With dead ends: 3226 [2021-12-16 01:09:13,165 INFO L226 Difference]: Without dead ends: 2307 [2021-12-16 01:09:13,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:09:13,170 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 1409 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:13,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 2702 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 01:09:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2021-12-16 01:09:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 1534. [2021-12-16 01:09:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1404 states have (on average 1.5527065527065527) internal successors, (2180), 1409 states have internal predecessors, (2180), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-16 01:09:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2383 transitions. [2021-12-16 01:09:13,251 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2383 transitions. Word has length 163 [2021-12-16 01:09:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:13,251 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 2383 transitions. [2021-12-16 01:09:13,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2383 transitions. [2021-12-16 01:09:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:13,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:13,254 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] [2021-12-16 01:09:13,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:09:13,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash 859629966, now seen corresponding path program 1 times [2021-12-16 01:09:13,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:13,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063352484] [2021-12-16 01:09:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:13,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:13,359 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 01:09:13,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:13,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063352484] [2021-12-16 01:09:13,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063352484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:13,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:13,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:13,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366568036] [2021-12-16 01:09:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:13,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:13,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:13,362 INFO L87 Difference]: Start difference. First operand 1534 states and 2383 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:14,459 INFO L93 Difference]: Finished difference Result 3661 states and 5782 transitions. [2021-12-16 01:09:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:14,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:14,467 INFO L225 Difference]: With dead ends: 3661 [2021-12-16 01:09:14,467 INFO L226 Difference]: Without dead ends: 2145 [2021-12-16 01:09:14,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:09:14,473 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 935 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:14,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 1323 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:09:14,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2021-12-16 01:09:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1534. [2021-12-16 01:09:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1404 states have (on average 1.5491452991452992) internal successors, (2175), 1409 states have internal predecessors, (2175), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-16 01:09:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2378 transitions. [2021-12-16 01:09:14,565 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2378 transitions. Word has length 163 [2021-12-16 01:09:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:14,565 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 2378 transitions. [2021-12-16 01:09:14,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2378 transitions. [2021-12-16 01:09:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:14,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:14,568 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] [2021-12-16 01:09:14,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:09:14,568 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1276253236, now seen corresponding path program 1 times [2021-12-16 01:09:14,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:14,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919506837] [2021-12-16 01:09:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:14,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:14,665 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 01:09:14,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:14,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919506837] [2021-12-16 01:09:14,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919506837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:14,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:14,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:14,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542190594] [2021-12-16 01:09:14,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:14,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:14,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:14,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:14,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:14,668 INFO L87 Difference]: Start difference. First operand 1534 states and 2378 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:17,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:17,230 INFO L93 Difference]: Finished difference Result 5405 states and 8490 transitions. [2021-12-16 01:09:17,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:09:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:17,245 INFO L225 Difference]: With dead ends: 5405 [2021-12-16 01:09:17,245 INFO L226 Difference]: Without dead ends: 3889 [2021-12-16 01:09:17,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:09:17,249 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 1401 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 3134 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:17,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1417 Valid, 2691 Invalid, 3212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3134 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 01:09:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2021-12-16 01:09:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2734. [2021-12-16 01:09:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2504 states have (on average 1.5443290734824282) internal successors, (3867), 2513 states have internal predecessors, (3867), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-16 01:09:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4236 transitions. [2021-12-16 01:09:17,386 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4236 transitions. Word has length 163 [2021-12-16 01:09:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 2734 states and 4236 transitions. [2021-12-16 01:09:17,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4236 transitions. [2021-12-16 01:09:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:17,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:17,391 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] [2021-12-16 01:09:17,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:09:17,391 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:17,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1206605362, now seen corresponding path program 1 times [2021-12-16 01:09:17,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:17,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024415253] [2021-12-16 01:09:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:17,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:17,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:17,512 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 01:09:17,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:17,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024415253] [2021-12-16 01:09:17,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024415253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:17,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:17,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:17,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434489564] [2021-12-16 01:09:17,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:17,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:17,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:17,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:17,514 INFO L87 Difference]: Start difference. First operand 2734 states and 4236 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:18,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:18,484 INFO L93 Difference]: Finished difference Result 6469 states and 10169 transitions. [2021-12-16 01:09:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:18,498 INFO L225 Difference]: With dead ends: 6469 [2021-12-16 01:09:18,498 INFO L226 Difference]: Without dead ends: 3753 [2021-12-16 01:09:18,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:09:18,506 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1076 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:18,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 1148 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:09:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2021-12-16 01:09:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 2734. [2021-12-16 01:09:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2504 states have (on average 1.54073482428115) internal successors, (3858), 2513 states have internal predecessors, (3858), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-16 01:09:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4227 transitions. [2021-12-16 01:09:18,634 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4227 transitions. Word has length 163 [2021-12-16 01:09:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:18,635 INFO L470 AbstractCegarLoop]: Abstraction has 2734 states and 4227 transitions. [2021-12-16 01:09:18,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4227 transitions. [2021-12-16 01:09:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:18,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:18,639 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] [2021-12-16 01:09:18,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:09:18,639 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash -788716660, now seen corresponding path program 1 times [2021-12-16 01:09:18,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:18,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124449802] [2021-12-16 01:09:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:18,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:18,741 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 01:09:18,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:18,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124449802] [2021-12-16 01:09:18,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124449802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:18,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:18,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:18,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058972163] [2021-12-16 01:09:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:18,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:18,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:18,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:18,743 INFO L87 Difference]: Start difference. First operand 2734 states and 4227 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:19,819 INFO L93 Difference]: Finished difference Result 6459 states and 10122 transitions. [2021-12-16 01:09:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:19,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:19,833 INFO L225 Difference]: With dead ends: 6459 [2021-12-16 01:09:19,833 INFO L226 Difference]: Without dead ends: 3743 [2021-12-16 01:09:19,840 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 01:09:19,840 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 1074 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:19,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 1144 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:09:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-12-16 01:09:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 2734. [2021-12-16 01:09:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2504 states have (on average 1.5371405750798721) internal successors, (3849), 2513 states have internal predecessors, (3849), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-16 01:09:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4218 transitions. [2021-12-16 01:09:19,981 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4218 transitions. Word has length 163 [2021-12-16 01:09:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:19,982 INFO L470 AbstractCegarLoop]: Abstraction has 2734 states and 4218 transitions. [2021-12-16 01:09:19,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4218 transitions. [2021-12-16 01:09:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:19,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:19,986 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] [2021-12-16 01:09:19,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:09:19,986 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash 610236942, now seen corresponding path program 1 times [2021-12-16 01:09:19,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:19,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945920325] [2021-12-16 01:09:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:19,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:20,099 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 01:09:20,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:20,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945920325] [2021-12-16 01:09:20,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945920325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:20,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:20,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:20,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769638677] [2021-12-16 01:09:20,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:20,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:20,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:20,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:20,102 INFO L87 Difference]: Start difference. First operand 2734 states and 4218 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:22,750 INFO L93 Difference]: Finished difference Result 9755 states and 15206 transitions. [2021-12-16 01:09:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:09:22,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:22,773 INFO L225 Difference]: With dead ends: 9755 [2021-12-16 01:09:22,773 INFO L226 Difference]: Without dead ends: 7039 [2021-12-16 01:09:22,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:09:22,780 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 1386 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:22,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 2674 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 01:09:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2021-12-16 01:09:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 5157. [2021-12-16 01:09:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4727 states have (on average 1.5322614766236513) internal successors, (7243), 4744 states have internal predecessors, (7243), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 01:09:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7962 transitions. [2021-12-16 01:09:23,045 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7962 transitions. Word has length 163 [2021-12-16 01:09:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:23,046 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 7962 transitions. [2021-12-16 01:09:23,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7962 transitions. [2021-12-16 01:09:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:23,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:23,054 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] [2021-12-16 01:09:23,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:09:23,054 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1007203508, now seen corresponding path program 1 times [2021-12-16 01:09:23,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:23,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015537073] [2021-12-16 01:09:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:23,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:23,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:23,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:23,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:23,151 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 01:09:23,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:23,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015537073] [2021-12-16 01:09:23,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015537073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:23,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:23,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:23,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68295598] [2021-12-16 01:09:23,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:23,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:23,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:23,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:23,153 INFO L87 Difference]: Start difference. First operand 5157 states and 7962 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:24,414 INFO L93 Difference]: Finished difference Result 12077 states and 18885 transitions. [2021-12-16 01:09:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:24,435 INFO L225 Difference]: With dead ends: 12077 [2021-12-16 01:09:24,435 INFO L226 Difference]: Without dead ends: 6938 [2021-12-16 01:09:24,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:09:24,447 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 933 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:24,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 1303 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:09:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6938 states. [2021-12-16 01:09:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6938 to 5157. [2021-12-16 01:09:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4727 states have (on average 1.5286651152951132) internal successors, (7226), 4744 states have internal predecessors, (7226), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 01:09:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7945 transitions. [2021-12-16 01:09:24,687 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7945 transitions. Word has length 163 [2021-12-16 01:09:24,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:24,688 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 7945 transitions. [2021-12-16 01:09:24,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7945 transitions. [2021-12-16 01:09:24,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:24,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:24,695 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] [2021-12-16 01:09:24,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:09:24,695 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash -643737010, now seen corresponding path program 1 times [2021-12-16 01:09:24,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:24,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832176785] [2021-12-16 01:09:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:24,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:24,804 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 01:09:24,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:24,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832176785] [2021-12-16 01:09:24,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832176785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:24,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:24,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:24,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916469645] [2021-12-16 01:09:24,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:24,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:24,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:24,806 INFO L87 Difference]: Start difference. First operand 5157 states and 7945 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:26,128 INFO L93 Difference]: Finished difference Result 12041 states and 18762 transitions. [2021-12-16 01:09:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:26,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:26,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:26,154 INFO L225 Difference]: With dead ends: 12041 [2021-12-16 01:09:26,154 INFO L226 Difference]: Without dead ends: 6902 [2021-12-16 01:09:26,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:09:26,165 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 928 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:26,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 1295 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:09:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6902 states. [2021-12-16 01:09:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6902 to 5157. [2021-12-16 01:09:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4727 states have (on average 1.525068753966575) internal successors, (7209), 4744 states have internal predecessors, (7209), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 01:09:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7928 transitions. [2021-12-16 01:09:26,445 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7928 transitions. Word has length 163 [2021-12-16 01:09:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:26,445 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 7928 transitions. [2021-12-16 01:09:26,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7928 transitions. [2021-12-16 01:09:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:26,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:26,456 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] [2021-12-16 01:09:26,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:09:26,457 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1188609584, now seen corresponding path program 1 times [2021-12-16 01:09:26,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620478539] [2021-12-16 01:09:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:26,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:26,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:26,550 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 01:09:26,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:26,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620478539] [2021-12-16 01:09:26,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620478539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:26,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:26,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:26,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062805239] [2021-12-16 01:09:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:26,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:26,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:26,552 INFO L87 Difference]: Start difference. First operand 5157 states and 7928 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:27,788 INFO L93 Difference]: Finished difference Result 12023 states and 18675 transitions. [2021-12-16 01:09:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:27,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:27,805 INFO L225 Difference]: With dead ends: 12023 [2021-12-16 01:09:27,805 INFO L226 Difference]: Without dead ends: 6884 [2021-12-16 01:09:27,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:09:27,816 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 926 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:27,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1291 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:09:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6884 states. [2021-12-16 01:09:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 5157. [2021-12-16 01:09:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4727 states have (on average 1.521472392638037) internal successors, (7192), 4744 states have internal predecessors, (7192), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 01:09:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7911 transitions. [2021-12-16 01:09:28,142 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7911 transitions. Word has length 163 [2021-12-16 01:09:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:28,143 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 7911 transitions. [2021-12-16 01:09:28,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7911 transitions. [2021-12-16 01:09:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:28,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:28,149 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] [2021-12-16 01:09:28,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:09:28,149 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash -513449458, now seen corresponding path program 1 times [2021-12-16 01:09:28,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:28,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727637813] [2021-12-16 01:09:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:28,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:28,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:28,250 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 01:09:28,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:28,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727637813] [2021-12-16 01:09:28,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727637813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:28,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:28,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:28,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077254653] [2021-12-16 01:09:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:28,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:28,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:28,253 INFO L87 Difference]: Start difference. First operand 5157 states and 7911 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:29,542 INFO L93 Difference]: Finished difference Result 12005 states and 18588 transitions. [2021-12-16 01:09:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:29,557 INFO L225 Difference]: With dead ends: 12005 [2021-12-16 01:09:29,558 INFO L226 Difference]: Without dead ends: 6866 [2021-12-16 01:09:29,565 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 01:09:29,566 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 924 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:29,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 1287 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:09:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2021-12-16 01:09:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 5157. [2021-12-16 01:09:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4727 states have (on average 1.5178760313094986) internal successors, (7175), 4744 states have internal predecessors, (7175), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 01:09:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7894 transitions. [2021-12-16 01:09:29,834 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7894 transitions. Word has length 163 [2021-12-16 01:09:29,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:29,834 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 7894 transitions. [2021-12-16 01:09:29,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7894 transitions. [2021-12-16 01:09:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:29,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:29,840 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] [2021-12-16 01:09:29,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:09:29,840 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1461501424, now seen corresponding path program 1 times [2021-12-16 01:09:29,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:29,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821770485] [2021-12-16 01:09:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:29,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:29,943 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 01:09:29,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:29,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821770485] [2021-12-16 01:09:29,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821770485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:29,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:29,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:29,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732893288] [2021-12-16 01:09:29,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:29,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:29,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:29,946 INFO L87 Difference]: Start difference. First operand 5157 states and 7894 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:31,186 INFO L93 Difference]: Finished difference Result 11987 states and 18501 transitions. [2021-12-16 01:09:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:31,202 INFO L225 Difference]: With dead ends: 11987 [2021-12-16 01:09:31,203 INFO L226 Difference]: Without dead ends: 6848 [2021-12-16 01:09:31,211 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 01:09:31,211 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 922 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:31,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 1283 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:09:31,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2021-12-16 01:09:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 5157. [2021-12-16 01:09:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4727 states have (on average 1.5142796699809604) internal successors, (7158), 4744 states have internal predecessors, (7158), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 01:09:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7877 transitions. [2021-12-16 01:09:31,458 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7877 transitions. Word has length 163 [2021-12-16 01:09:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:31,459 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 7877 transitions. [2021-12-16 01:09:31,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7877 transitions. [2021-12-16 01:09:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:31,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:31,481 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] [2021-12-16 01:09:31,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:09:31,481 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2046273074, now seen corresponding path program 1 times [2021-12-16 01:09:31,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:31,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389333125] [2021-12-16 01:09:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:31,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:31,588 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 01:09:31,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:31,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389333125] [2021-12-16 01:09:31,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389333125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:31,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:31,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:31,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269366590] [2021-12-16 01:09:31,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:31,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:31,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:31,590 INFO L87 Difference]: Start difference. First operand 5157 states and 7877 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:34,891 INFO L93 Difference]: Finished difference Result 19476 states and 29986 transitions. [2021-12-16 01:09:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 01:09:34,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:34,925 INFO L225 Difference]: With dead ends: 19476 [2021-12-16 01:09:34,925 INFO L226 Difference]: Without dead ends: 14337 [2021-12-16 01:09:34,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-16 01:09:34,934 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 1392 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:34,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 2623 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 01:09:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14337 states. [2021-12-16 01:09:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14337 to 10068. [2021-12-16 01:09:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10068 states, 9254 states have (on average 1.5098335854765508) internal successors, (13972), 9287 states have internal predecessors, (13972), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-12-16 01:09:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 15413 transitions. [2021-12-16 01:09:35,491 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 15413 transitions. Word has length 163 [2021-12-16 01:09:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:35,491 INFO L470 AbstractCegarLoop]: Abstraction has 10068 states and 15413 transitions. [2021-12-16 01:09:35,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 15413 transitions. [2021-12-16 01:09:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:35,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:35,501 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] [2021-12-16 01:09:35,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 01:09:35,501 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1814188624, now seen corresponding path program 1 times [2021-12-16 01:09:35,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:35,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154668226] [2021-12-16 01:09:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:35,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:35,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:35,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:35,611 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 01:09:35,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:35,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154668226] [2021-12-16 01:09:35,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154668226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:35,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:35,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:35,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412055338] [2021-12-16 01:09:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:35,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:35,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:35,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:35,613 INFO L87 Difference]: Start difference. First operand 10068 states and 15413 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:39,576 INFO L93 Difference]: Finished difference Result 37457 states and 57876 transitions. [2021-12-16 01:09:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 01:09:39,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:39,633 INFO L225 Difference]: With dead ends: 37457 [2021-12-16 01:09:39,633 INFO L226 Difference]: Without dead ends: 27407 [2021-12-16 01:09:39,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-16 01:09:39,652 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 1483 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:39,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 2558 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 01:09:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27407 states. [2021-12-16 01:09:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27407 to 19861. [2021-12-16 01:09:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19861 states, 18295 states have (on average 1.508062312107133) internal successors, (27590), 18360 states have internal predecessors, (27590), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-12-16 01:09:40,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19861 states to 19861 states and 30605 transitions. [2021-12-16 01:09:40,764 INFO L78 Accepts]: Start accepts. Automaton has 19861 states and 30605 transitions. Word has length 163 [2021-12-16 01:09:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:40,765 INFO L470 AbstractCegarLoop]: Abstraction has 19861 states and 30605 transitions. [2021-12-16 01:09:40,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:40,765 INFO L276 IsEmpty]: Start isEmpty. Operand 19861 states and 30605 transitions. [2021-12-16 01:09:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:40,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:40,782 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] [2021-12-16 01:09:40,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 01:09:40,783 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1384530318, now seen corresponding path program 1 times [2021-12-16 01:09:40,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:40,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885267252] [2021-12-16 01:09:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:40,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:40,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:40,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:40,859 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 01:09:40,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885267252] [2021-12-16 01:09:40,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885267252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:40,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:40,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:40,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917527324] [2021-12-16 01:09:40,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:40,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:40,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:40,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:40,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:40,861 INFO L87 Difference]: Start difference. First operand 19861 states and 30605 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:43,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:43,497 INFO L93 Difference]: Finished difference Result 45341 states and 70606 transitions. [2021-12-16 01:09:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:09:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:43,560 INFO L225 Difference]: With dead ends: 45341 [2021-12-16 01:09:43,560 INFO L226 Difference]: Without dead ends: 25498 [2021-12-16 01:09:43,593 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 01:09:43,593 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 924 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:43,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 1271 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:09:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25498 states. [2021-12-16 01:09:44,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25498 to 19861. [2021-12-16 01:09:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19861 states, 18295 states have (on average 1.5045094288056846) internal successors, (27525), 18360 states have internal predecessors, (27525), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-12-16 01:09:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19861 states to 19861 states and 30540 transitions. [2021-12-16 01:09:44,794 INFO L78 Accepts]: Start accepts. Automaton has 19861 states and 30540 transitions. Word has length 163 [2021-12-16 01:09:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:44,794 INFO L470 AbstractCegarLoop]: Abstraction has 19861 states and 30540 transitions. [2021-12-16 01:09:44,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 19861 states and 30540 transitions. [2021-12-16 01:09:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:44,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:44,812 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] [2021-12-16 01:09:44,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 01:09:44,812 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:44,812 INFO L85 PathProgramCache]: Analyzing trace with hash 677933712, now seen corresponding path program 1 times [2021-12-16 01:09:44,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:44,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385394200] [2021-12-16 01:09:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:44,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:44,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:44,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:44,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:44,902 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 01:09:44,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:44,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385394200] [2021-12-16 01:09:44,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385394200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:44,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:44,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:44,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578374951] [2021-12-16 01:09:44,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:44,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:44,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:44,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:44,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:44,904 INFO L87 Difference]: Start difference. First operand 19861 states and 30540 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:09:50,875 INFO L93 Difference]: Finished difference Result 70892 states and 110190 transitions. [2021-12-16 01:09:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 01:09:50,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 163 [2021-12-16 01:09:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:09:51,015 INFO L225 Difference]: With dead ends: 70892 [2021-12-16 01:09:51,015 INFO L226 Difference]: Without dead ends: 51049 [2021-12-16 01:09:51,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-16 01:09:51,056 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1342 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:09:51,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 2602 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 01:09:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51049 states. [2021-12-16 01:09:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51049 to 39544. [2021-12-16 01:09:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39544 states, 36506 states have (on average 1.5044924122062127) internal successors, (54923), 36635 states have internal predecessors, (54923), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-12-16 01:09:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39544 states to 39544 states and 61508 transitions. [2021-12-16 01:09:53,694 INFO L78 Accepts]: Start accepts. Automaton has 39544 states and 61508 transitions. Word has length 163 [2021-12-16 01:09:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:09:53,694 INFO L470 AbstractCegarLoop]: Abstraction has 39544 states and 61508 transitions. [2021-12-16 01:09:53,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 01:09:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 39544 states and 61508 transitions. [2021-12-16 01:09:53,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:09:53,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:09:53,726 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] [2021-12-16 01:09:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 01:09:53,726 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:09:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:09:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1539767314, now seen corresponding path program 1 times [2021-12-16 01:09:53,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:09:53,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605926563] [2021-12-16 01:09:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:09:53,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:09:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:09:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:09:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:09:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 01:09:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:09:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:09:53,821 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 01:09:53,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:09:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605926563] [2021-12-16 01:09:53,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605926563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:09:53,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:09:53,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:09:53,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142063474] [2021-12-16 01:09:53,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:09:53,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:09:53,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:09:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:09:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:09:53,824 INFO L87 Difference]: Start difference. First operand 39544 states and 61508 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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)