./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed3d7c65b5f276938c992de2fd71c82e0f79af5cc9147088727c012b3d12461a --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:47:56,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:47:56,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:47:56,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:47:56,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:47:56,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:47:56,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:47:56,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:47:56,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:47:56,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:47:56,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:47:56,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:47:56,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:47:56,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:47:56,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:47:56,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:47:56,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:47:56,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:47:56,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:47:56,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:47:56,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:47:56,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:47:56,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:47:56,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:47:56,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:47:56,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:47:56,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:47:56,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:47:56,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:47:56,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:47:56,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:47:56,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:47:56,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:47:56,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:47:56,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:47:56,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:47:56,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:47:56,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:47:56,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:47:56,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:47:56,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:47:56,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:47:56,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:47:56,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:47:56,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:47:56,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:47:56,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:47:56,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:47:56,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:47:56,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:47:56,858 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:47:56,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:47:56,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:47:56,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:47:56,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:47:56,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:47:56,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:47:56,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:47:56,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:47:56,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:47:56,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:47:56,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:47:56,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:47:56,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:47:56,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:47:56,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:47:56,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:47:56,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:47:56,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:47:56,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:47:56,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:47:56,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:47:56,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:47:56,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:47:56,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:47:56,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:47:56,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed3d7c65b5f276938c992de2fd71c82e0f79af5cc9147088727c012b3d12461a [2021-12-14 15:47:57,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:47:57,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:47:57,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:47:57,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:47:57,164 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:47:57,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c [2021-12-14 15:47:57,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e555c29/446a3a294c804928a6d45076abb67c15/FLAG05843017b [2021-12-14 15:47:58,037 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:47:58,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c [2021-12-14 15:47:58,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e555c29/446a3a294c804928a6d45076abb67c15/FLAG05843017b [2021-12-14 15:47:58,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e555c29/446a3a294c804928a6d45076abb67c15 [2021-12-14 15:47:58,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:47:58,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:47:58,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:47:58,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:47:58,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:47:58,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:58" (1/1) ... [2021-12-14 15:47:58,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549285ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:58, skipping insertion in model container [2021-12-14 15:47:58,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:58" (1/1) ... [2021-12-14 15:47:58,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:47:58,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:48:00,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[377612,377625] [2021-12-14 15:48:00,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[383339,383352] [2021-12-14 15:48:00,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:48:00,671 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:48:01,461 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[377612,377625] [2021-12-14 15:48:01,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[383339,383352] [2021-12-14 15:48:01,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:48:01,563 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:48:01,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01 WrapperNode [2021-12-14 15:48:01,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:48:01,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:48:01,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:48:01,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:48:01,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:01,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,057 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-14 15:48:02,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:48:02,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:48:02,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:48:02,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:48:02,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:48:02,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:48:02,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:48:02,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:48:02,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (1/1) ... [2021-12-14 15:48:02,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:48:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:48:02,661 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) [2021-12-14 15:48:02,707 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 [2021-12-14 15:48:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:48:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:48:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:48:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:48:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:48:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:48:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:48:02,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:48:02,908 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:48:02,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:48:08,969 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:48:09,002 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:48:09,002 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-14 15:48:09,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:48:09 BoogieIcfgContainer [2021-12-14 15:48:09,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:48:09,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:48:09,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:48:09,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:48:09,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:47:58" (1/3) ... [2021-12-14 15:48:09,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae5e858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:48:09, skipping insertion in model container [2021-12-14 15:48:09,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:01" (2/3) ... [2021-12-14 15:48:09,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae5e858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:48:09, skipping insertion in model container [2021-12-14 15:48:09,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:48:09" (3/3) ... [2021-12-14 15:48:09,016 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.13.cil-2.c [2021-12-14 15:48:09,021 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:48:09,021 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:48:09,072 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:48:09,078 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 [2021-12-14 15:48:09,078 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:48:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:48:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:09,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:09,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:09,152 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-14 15:48:09,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:09,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750062008] [2021-12-14 15:48:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:09,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:09,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:09,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750062008] [2021-12-14 15:48:09,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750062008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:09,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:09,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:48:09,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641555729] [2021-12-14 15:48:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:09,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:48:09,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:48:09,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:48:09,760 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:11,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:11,677 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2021-12-14 15:48:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:48:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:11,704 INFO L225 Difference]: With dead ends: 5325 [2021-12-14 15:48:11,704 INFO L226 Difference]: Without dead ends: 2676 [2021-12-14 15:48:11,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:48:11,717 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:11,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 17241 Invalid, 817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:48:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-14 15:48:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-14 15:48:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:48:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2021-12-14 15:48:11,888 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2021-12-14 15:48:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:11,889 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2021-12-14 15:48:11,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2021-12-14 15:48:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:11,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:11,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:11,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:48:11,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2021-12-14 15:48:11,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:11,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034879515] [2021-12-14 15:48:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:11,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:12,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034879515] [2021-12-14 15:48:12,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034879515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:12,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:12,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:48:12,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901623626] [2021-12-14 15:48:12,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:12,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:48:12,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:48:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:48:12,115 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:13,781 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2021-12-14 15:48:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:48:13,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:13,795 INFO L225 Difference]: With dead ends: 3061 [2021-12-14 15:48:13,795 INFO L226 Difference]: Without dead ends: 2676 [2021-12-14 15:48:13,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:48:13,800 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:13,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 16968 Invalid, 816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:48:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-14 15:48:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-14 15:48:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:48:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2021-12-14 15:48:13,889 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2021-12-14 15:48:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:13,891 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2021-12-14 15:48:13,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2021-12-14 15:48:13,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:13,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:13,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:13,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:48:13,898 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2021-12-14 15:48:13,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:13,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946215622] [2021-12-14 15:48:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:13,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:13,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:14,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:14,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946215622] [2021-12-14 15:48:14,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946215622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:14,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:14,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:48:14,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838933015] [2021-12-14 15:48:14,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:14,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:48:14,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:14,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:48:14,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:48:14,125 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:17,243 INFO L93 Difference]: Finished difference Result 3611 states and 6359 transitions. [2021-12-14 15:48:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:48:17,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:17,257 INFO L225 Difference]: With dead ends: 3611 [2021-12-14 15:48:17,257 INFO L226 Difference]: Without dead ends: 3230 [2021-12-14 15:48:17,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:48:17,260 INFO L933 BasicCegarLoop]: 4715 mSDtfsCounter, 5624 mSDsluCounter, 12944 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5644 SdHoareTripleChecker+Valid, 17659 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:17,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5644 Valid, 17659 Invalid, 2215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 15:48:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2021-12-14 15:48:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2925. [2021-12-14 15:48:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2861 states have (on average 1.7948269835721775) internal successors, (5135), 2864 states have internal predecessors, (5135), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-14 15:48:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5236 transitions. [2021-12-14 15:48:17,350 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5236 transitions. Word has length 189 [2021-12-14 15:48:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:17,350 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 5236 transitions. [2021-12-14 15:48:17,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5236 transitions. [2021-12-14 15:48:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:17,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:17,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:17,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:48:17,354 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash 671278923, now seen corresponding path program 1 times [2021-12-14 15:48:17,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:17,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065865091] [2021-12-14 15:48:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:17,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:17,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:17,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:17,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065865091] [2021-12-14 15:48:17,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065865091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:17,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:17,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:17,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220688878] [2021-12-14 15:48:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:17,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:17,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:17,522 INFO L87 Difference]: Start difference. First operand 2925 states and 5236 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:19,622 INFO L93 Difference]: Finished difference Result 4037 states and 7051 transitions. [2021-12-14 15:48:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:48:19,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:19,637 INFO L225 Difference]: With dead ends: 4037 [2021-12-14 15:48:19,637 INFO L226 Difference]: Without dead ends: 3254 [2021-12-14 15:48:19,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:48:19,642 INFO L933 BasicCegarLoop]: 4656 mSDtfsCounter, 5157 mSDsluCounter, 16826 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5178 SdHoareTripleChecker+Valid, 21482 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:19,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5178 Valid, 21482 Invalid, 1711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:48:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-12-14 15:48:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 2925. [2021-12-14 15:48:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2861 states have (on average 1.7941279272981474) internal successors, (5133), 2864 states have internal predecessors, (5133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-14 15:48:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5234 transitions. [2021-12-14 15:48:19,778 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5234 transitions. Word has length 189 [2021-12-14 15:48:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:19,779 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 5234 transitions. [2021-12-14 15:48:19,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5234 transitions. [2021-12-14 15:48:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:19,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:19,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:19,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:48:19,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1053329399, now seen corresponding path program 1 times [2021-12-14 15:48:19,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:19,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905934169] [2021-12-14 15:48:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:19,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:19,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:19,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905934169] [2021-12-14 15:48:19,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905934169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:19,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:19,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:19,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681900637] [2021-12-14 15:48:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:19,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:19,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:19,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:19,979 INFO L87 Difference]: Start difference. First operand 2925 states and 5234 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:23,900 INFO L93 Difference]: Finished difference Result 4586 states and 7932 transitions. [2021-12-14 15:48:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:23,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:23,918 INFO L225 Difference]: With dead ends: 4586 [2021-12-14 15:48:23,918 INFO L226 Difference]: Without dead ends: 3803 [2021-12-14 15:48:23,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:23,924 INFO L933 BasicCegarLoop]: 5026 mSDtfsCounter, 5655 mSDsluCounter, 17899 mSDsCounter, 0 mSdLazyCounter, 3266 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22925 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:23,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 22925 Invalid, 3351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3266 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-14 15:48:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2021-12-14 15:48:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3299. [2021-12-14 15:48:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 3206 states have (on average 1.7694946974422956) internal successors, (5673), 3210 states have internal predecessors, (5673), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-14 15:48:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 5820 transitions. [2021-12-14 15:48:24,073 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 5820 transitions. Word has length 189 [2021-12-14 15:48:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:24,074 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 5820 transitions. [2021-12-14 15:48:24,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 5820 transitions. [2021-12-14 15:48:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:24,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:24,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:24,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:48:24,078 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:24,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -483057593, now seen corresponding path program 1 times [2021-12-14 15:48:24,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:24,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043486301] [2021-12-14 15:48:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:24,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:24,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043486301] [2021-12-14 15:48:24,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043486301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:24,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:24,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:24,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372053317] [2021-12-14 15:48:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:24,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:24,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:24,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:24,309 INFO L87 Difference]: Start difference. First operand 3299 states and 5820 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:27,815 INFO L93 Difference]: Finished difference Result 6024 states and 10234 transitions. [2021-12-14 15:48:27,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:27,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:27,835 INFO L225 Difference]: With dead ends: 6024 [2021-12-14 15:48:27,836 INFO L226 Difference]: Without dead ends: 4867 [2021-12-14 15:48:27,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:27,843 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 5651 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5671 SdHoareTripleChecker+Valid, 22914 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:27,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5671 Valid, 22914 Invalid, 3336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3250 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-14 15:48:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2021-12-14 15:48:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4050. [2021-12-14 15:48:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 3899 states have (on average 1.7332649397281354) internal successors, (6758), 3905 states have internal predecessors, (6758), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:48:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 7001 transitions. [2021-12-14 15:48:28,015 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 7001 transitions. Word has length 189 [2021-12-14 15:48:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:28,015 INFO L470 AbstractCegarLoop]: Abstraction has 4050 states and 7001 transitions. [2021-12-14 15:48:28,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 7001 transitions. [2021-12-14 15:48:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:28,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:28,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:28,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:48:28,020 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 920811593, now seen corresponding path program 1 times [2021-12-14 15:48:28,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:28,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388072359] [2021-12-14 15:48:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:28,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:28,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:28,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388072359] [2021-12-14 15:48:28,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388072359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:28,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:28,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:28,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234892898] [2021-12-14 15:48:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:28,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:28,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:28,192 INFO L87 Difference]: Start difference. First operand 4050 states and 7001 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:29,805 INFO L93 Difference]: Finished difference Result 6765 states and 11406 transitions. [2021-12-14 15:48:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:48:29,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:29,830 INFO L225 Difference]: With dead ends: 6765 [2021-12-14 15:48:29,830 INFO L226 Difference]: Without dead ends: 4857 [2021-12-14 15:48:29,838 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 [2021-12-14 15:48:29,839 INFO L933 BasicCegarLoop]: 4643 mSDtfsCounter, 5334 mSDsluCounter, 12661 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5355 SdHoareTripleChecker+Valid, 17304 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:29,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5355 Valid, 17304 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:48:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-12-14 15:48:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 4050. [2021-12-14 15:48:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 3899 states have (on average 1.7319825596306746) internal successors, (6753), 3905 states have internal predecessors, (6753), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:48:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 6996 transitions. [2021-12-14 15:48:30,027 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 6996 transitions. Word has length 189 [2021-12-14 15:48:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:30,028 INFO L470 AbstractCegarLoop]: Abstraction has 4050 states and 6996 transitions. [2021-12-14 15:48:30,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 6996 transitions. [2021-12-14 15:48:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:30,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:30,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:30,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:48:30,031 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:30,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash 134813703, now seen corresponding path program 1 times [2021-12-14 15:48:30,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:30,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352115516] [2021-12-14 15:48:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:30,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:30,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:30,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352115516] [2021-12-14 15:48:30,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352115516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:30,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:30,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:30,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591883072] [2021-12-14 15:48:30,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:30,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:30,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:30,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:30,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:30,226 INFO L87 Difference]: Start difference. First operand 4050 states and 6996 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:31,838 INFO L93 Difference]: Finished difference Result 6759 states and 11379 transitions. [2021-12-14 15:48:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:48:31,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:31,852 INFO L225 Difference]: With dead ends: 6759 [2021-12-14 15:48:31,853 INFO L226 Difference]: Without dead ends: 4851 [2021-12-14 15:48:31,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:48:31,861 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 5418 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5439 SdHoareTripleChecker+Valid, 17255 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:31,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5439 Valid, 17255 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:48:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2021-12-14 15:48:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4050. [2021-12-14 15:48:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 3899 states have (on average 1.7307001795332135) internal successors, (6748), 3905 states have internal predecessors, (6748), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:48:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 6991 transitions. [2021-12-14 15:48:32,029 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 6991 transitions. Word has length 189 [2021-12-14 15:48:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:32,029 INFO L470 AbstractCegarLoop]: Abstraction has 4050 states and 6991 transitions. [2021-12-14 15:48:32,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 6991 transitions. [2021-12-14 15:48:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:32,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:32,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:32,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:48:32,033 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 802195593, now seen corresponding path program 1 times [2021-12-14 15:48:32,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:32,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776200982] [2021-12-14 15:48:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:32,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:32,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776200982] [2021-12-14 15:48:32,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776200982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:32,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:32,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:32,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827852370] [2021-12-14 15:48:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:32,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:32,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:32,191 INFO L87 Difference]: Start difference. First operand 4050 states and 6991 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:33,663 INFO L93 Difference]: Finished difference Result 6753 states and 11352 transitions. [2021-12-14 15:48:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:48:33,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:33,682 INFO L225 Difference]: With dead ends: 6753 [2021-12-14 15:48:33,682 INFO L226 Difference]: Without dead ends: 4845 [2021-12-14 15:48:33,691 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 [2021-12-14 15:48:33,691 INFO L933 BasicCegarLoop]: 4635 mSDtfsCounter, 5330 mSDsluCounter, 12661 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5351 SdHoareTripleChecker+Valid, 17296 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:33,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5351 Valid, 17296 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:48:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2021-12-14 15:48:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4050. [2021-12-14 15:48:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 3899 states have (on average 1.7294177994357527) internal successors, (6743), 3905 states have internal predecessors, (6743), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:48:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 6986 transitions. [2021-12-14 15:48:33,865 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 6986 transitions. Word has length 189 [2021-12-14 15:48:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:33,866 INFO L470 AbstractCegarLoop]: Abstraction has 4050 states and 6986 transitions. [2021-12-14 15:48:33,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 6986 transitions. [2021-12-14 15:48:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:33,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:33,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:33,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:48:33,869 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:33,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1393033273, now seen corresponding path program 1 times [2021-12-14 15:48:33,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:33,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804059086] [2021-12-14 15:48:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:33,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:34,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:34,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804059086] [2021-12-14 15:48:34,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804059086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:34,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:34,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:34,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302764390] [2021-12-14 15:48:34,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:34,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:34,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:34,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:34,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:34,087 INFO L87 Difference]: Start difference. First operand 4050 states and 6986 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:37,406 INFO L93 Difference]: Finished difference Result 8781 states and 14543 transitions. [2021-12-14 15:48:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:37,430 INFO L225 Difference]: With dead ends: 8781 [2021-12-14 15:48:37,431 INFO L226 Difference]: Without dead ends: 6873 [2021-12-14 15:48:37,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:37,441 INFO L933 BasicCegarLoop]: 4996 mSDtfsCounter, 5629 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5649 SdHoareTripleChecker+Valid, 22891 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:37,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5649 Valid, 22891 Invalid, 3271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 15:48:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6873 states. [2021-12-14 15:48:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6873 to 5570. [2021-12-14 15:48:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5303 states have (on average 1.6826324721855555) internal successors, (8923), 5313 states have internal predecessors, (8923), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-14 15:48:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 9364 transitions. [2021-12-14 15:48:37,723 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 9364 transitions. Word has length 189 [2021-12-14 15:48:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:37,725 INFO L470 AbstractCegarLoop]: Abstraction has 5570 states and 9364 transitions. [2021-12-14 15:48:37,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 9364 transitions. [2021-12-14 15:48:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:37,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:37,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:37,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:48:37,733 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1048205111, now seen corresponding path program 1 times [2021-12-14 15:48:37,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:37,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617581622] [2021-12-14 15:48:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:37,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:37,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617581622] [2021-12-14 15:48:37,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617581622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:37,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:37,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:37,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275909887] [2021-12-14 15:48:37,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:37,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:37,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:37,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:37,897 INFO L87 Difference]: Start difference. First operand 5570 states and 9364 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:41,596 INFO L93 Difference]: Finished difference Result 14335 states and 23331 transitions. [2021-12-14 15:48:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:41,632 INFO L225 Difference]: With dead ends: 14335 [2021-12-14 15:48:41,632 INFO L226 Difference]: Without dead ends: 10907 [2021-12-14 15:48:41,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:41,649 INFO L933 BasicCegarLoop]: 4989 mSDtfsCounter, 5631 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5651 SdHoareTripleChecker+Valid, 22884 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:41,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5651 Valid, 22884 Invalid, 3263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 15:48:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10907 states. [2021-12-14 15:48:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10907 to 8611. [2021-12-14 15:48:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8611 states, 8112 states have (on average 1.6372041420118344) internal successors, (13281), 8130 states have internal predecessors, (13281), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-14 15:48:42,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8611 states to 8611 states and 14136 transitions. [2021-12-14 15:48:42,176 INFO L78 Accepts]: Start accepts. Automaton has 8611 states and 14136 transitions. Word has length 189 [2021-12-14 15:48:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:42,176 INFO L470 AbstractCegarLoop]: Abstraction has 8611 states and 14136 transitions. [2021-12-14 15:48:42,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 8611 states and 14136 transitions. [2021-12-14 15:48:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:42,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:42,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:42,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:48:42,183 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:42,184 INFO L85 PathProgramCache]: Analyzing trace with hash -67250297, now seen corresponding path program 1 times [2021-12-14 15:48:42,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:42,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595663034] [2021-12-14 15:48:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:42,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:42,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:42,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595663034] [2021-12-14 15:48:42,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595663034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:42,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:42,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:42,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838655102] [2021-12-14 15:48:42,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:42,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:42,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:42,341 INFO L87 Difference]: Start difference. First operand 8611 states and 14136 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:46,446 INFO L93 Difference]: Finished difference Result 25420 states and 40921 transitions. [2021-12-14 15:48:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:46,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-14 15:48:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:46,513 INFO L225 Difference]: With dead ends: 25420 [2021-12-14 15:48:46,514 INFO L226 Difference]: Without dead ends: 18951 [2021-12-14 15:48:46,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:46,544 INFO L933 BasicCegarLoop]: 4980 mSDtfsCounter, 5626 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5646 SdHoareTripleChecker+Valid, 22875 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:46,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5646 Valid, 22875 Invalid, 3245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 15:48:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18951 states. [2021-12-14 15:48:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18951 to 14725. [2021-12-14 15:48:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14725 states, 13762 states have (on average 1.6024560383665165) internal successors, (22053), 13796 states have internal predecessors, (22053), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-14 15:48:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14725 states to 14725 states and 23790 transitions. [2021-12-14 15:48:47,429 INFO L78 Accepts]: Start accepts. Automaton has 14725 states and 23790 transitions. Word has length 189 [2021-12-14 15:48:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:47,429 INFO L470 AbstractCegarLoop]: Abstraction has 14725 states and 23790 transitions. [2021-12-14 15:48:47,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:48:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 14725 states and 23790 transitions. [2021-12-14 15:48:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 15:48:47,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:47,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:47,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:48:47,439 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash -678519355, now seen corresponding path program 1 times [2021-12-14 15:48:47,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:47,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994316054] [2021-12-14 15:48:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:47,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:48:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:48:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:48:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:48:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:47,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:47,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994316054] [2021-12-14 15:48:47,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994316054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:47,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:47,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:47,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527065693] [2021-12-14 15:48:47,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:47,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:47,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:47,590 INFO L87 Difference]: Start difference. First operand 14725 states and 23790 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)