./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.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 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:55:15,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:55:15,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:55:15,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:55:15,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:55:15,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:55:15,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:55:15,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:55:15,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:55:15,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:55:15,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:55:15,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:55:15,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:55:15,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:55:15,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:55:15,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:55:15,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:55:15,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:55:15,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:55:15,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:55:15,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:55:15,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:55:15,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:55:15,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:55:15,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:55:15,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:55:15,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:55:15,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:55:15,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:55:15,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:55:15,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:55:15,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:55:15,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:55:15,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:55:15,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:55:15,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:55:15,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:55:15,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:55:15,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:55:15,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:55:15,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:55:15,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:55:15,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:55:15,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:55:15,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:55:15,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:55:15,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:55:15,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:55:15,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:55:15,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:55:15,819 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:55:15,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:55:15,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:55:15,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:55:15,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:55:15,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:55:15,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:55:15,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:55:15,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:55:15,821 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:55:15,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:55:15,821 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:55:15,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:55:15,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:55:15,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:55:15,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:55:15,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:55:15,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:55:15,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:55:15,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:55:15,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:55:15,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:55:15,823 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:55:15,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:55:15,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:55:15,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:55:15,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 [2021-12-17 18:55:16,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:55:16,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:55:16,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:55:16,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:55:16,045 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:55:16,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2021-12-17 18:55:16,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60921de4e/7c80450da682474da1ccf021e9ad88b8/FLAG7ee518fa0 [2021-12-17 18:55:16,999 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:55:16,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2021-12-17 18:55:17,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60921de4e/7c80450da682474da1ccf021e9ad88b8/FLAG7ee518fa0 [2021-12-17 18:55:17,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60921de4e/7c80450da682474da1ccf021e9ad88b8 [2021-12-17 18:55:17,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:55:17,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:55:17,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:55:17,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:55:17,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:55:17,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:55:17" (1/1) ... [2021-12-17 18:55:17,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e522999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:17, skipping insertion in model container [2021-12-17 18:55:17,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:55:17" (1/1) ... [2021-12-17 18:55:17,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:55:17,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:55:18,603 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_label43+token_ring.09.cil-2.c[381679,381692] [2021-12-17 18:55:18,622 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_label43+token_ring.09.cil-2.c[383339,383352] [2021-12-17 18:55:18,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:55:18,798 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:55:19,360 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_label43+token_ring.09.cil-2.c[381679,381692] [2021-12-17 18:55:19,363 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_label43+token_ring.09.cil-2.c[383339,383352] [2021-12-17 18:55:19,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:55:19,423 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:55:19,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19 WrapperNode [2021-12-17 18:55:19,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:55:19,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:55:19,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:55:19,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:55:19,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:19,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:19,915 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2021-12-17 18:55:19,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:55:19,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:55:19,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:55:19,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:55:19,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:19,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:20,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:20,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:20,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:20,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:20,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:20,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:55:20,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:55:20,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:55:20,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:55:20,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (1/1) ... [2021-12-17 18:55:20,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:55:20,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:55:20,342 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) [2021-12-17 18:55:20,357 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 [2021-12-17 18:55:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:55:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:55:20,369 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:55:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:55:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:55:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:55:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:55:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 18:55:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 18:55:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:55:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:55:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:55:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:55:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:55:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:55:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:55:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:55:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:55:20,511 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:55:20,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:55:25,525 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:55:25,550 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:55:25,550 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-17 18:55:25,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:55:25 BoogieIcfgContainer [2021-12-17 18:55:25,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:55:25,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:55:25,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:55:25,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:55:25,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:55:17" (1/3) ... [2021-12-17 18:55:25,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2482be59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:55:25, skipping insertion in model container [2021-12-17 18:55:25,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:19" (2/3) ... [2021-12-17 18:55:25,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2482be59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:55:25, skipping insertion in model container [2021-12-17 18:55:25,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:55:25" (3/3) ... [2021-12-17 18:55:25,562 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-2.c [2021-12-17 18:55:25,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:55:25,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:55:25,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:55:25,626 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 [2021-12-17 18:55:25,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:55:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-17 18:55:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:25,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:25,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:55:25,695 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:25,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-17 18:55:25,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662874385] [2021-12-17 18:55:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:25,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:26,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:26,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662874385] [2021-12-17 18:55:26,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662874385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:26,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:26,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:55:26,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350994588] [2021-12-17 18:55:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:26,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:55:26,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:26,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:55:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:55:26,152 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:27,248 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2021-12-17 18:55:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:55:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:27,270 INFO L225 Difference]: With dead ends: 5096 [2021-12-17 18:55:27,270 INFO L226 Difference]: Without dead ends: 2539 [2021-12-17 18:55:27,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:55:27,281 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12422 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:27,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 16979 Invalid, 605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:55:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-17 18:55:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2021-12-17 18:55:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-17 18:55:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2021-12-17 18:55:27,371 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2021-12-17 18:55:27,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:27,371 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2021-12-17 18:55:27,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2021-12-17 18:55:27,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:27,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:27,375 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] [2021-12-17 18:55:27,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:55:27,375 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:27,376 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2021-12-17 18:55:27,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:27,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33152166] [2021-12-17 18:55:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:27,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:27,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:27,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33152166] [2021-12-17 18:55:27,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33152166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:27,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:27,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:55:27,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824353780] [2021-12-17 18:55:27,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:27,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:55:27,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:55:27,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:55:27,584 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:29,413 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2021-12-17 18:55:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:55:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:29,425 INFO L225 Difference]: With dead ends: 3244 [2021-12-17 18:55:29,425 INFO L226 Difference]: Without dead ends: 2952 [2021-12-17 18:55:29,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:55:29,428 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12720 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17248 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:29,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 17248 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:55:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2021-12-17 18:55:29,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2021-12-17 18:55:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-17 18:55:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2021-12-17 18:55:29,489 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2021-12-17 18:55:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:29,489 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2021-12-17 18:55:29,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2021-12-17 18:55:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:29,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:29,491 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] [2021-12-17 18:55:29,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:55:29,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2021-12-17 18:55:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:29,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122276164] [2021-12-17 18:55:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:29,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:29,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122276164] [2021-12-17 18:55:29,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122276164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:29,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:29,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:29,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676363485] [2021-12-17 18:55:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:29,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:29,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:29,648 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:31,897 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2021-12-17 18:55:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:55:31,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:31,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:31,910 INFO L225 Difference]: With dead ends: 3972 [2021-12-17 18:55:31,910 INFO L226 Difference]: Without dead ends: 3377 [2021-12-17 18:55:31,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:55:31,913 INFO L933 BasicCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17461 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22234 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:31,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5217 Valid, 22234 Invalid, 2479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 18:55:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-12-17 18:55:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2021-12-17 18:55:31,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-17 18:55:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2021-12-17 18:55:31,992 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2021-12-17 18:55:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:31,992 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2021-12-17 18:55:31,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2021-12-17 18:55:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:31,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:31,995 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] [2021-12-17 18:55:31,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:55:31,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2021-12-17 18:55:31,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:31,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725743636] [2021-12-17 18:55:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:31,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:32,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:32,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725743636] [2021-12-17 18:55:32,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725743636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:32,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:32,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:32,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145926880] [2021-12-17 18:55:32,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:32,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:32,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:32,115 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:34,211 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2021-12-17 18:55:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:55:34,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:34,227 INFO L225 Difference]: With dead ends: 5044 [2021-12-17 18:55:34,227 INFO L226 Difference]: Without dead ends: 4167 [2021-12-17 18:55:34,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:55:34,232 INFO L933 BasicCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22218 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:34,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 22218 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 18:55:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2021-12-17 18:55:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2021-12-17 18:55:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-17 18:55:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2021-12-17 18:55:34,333 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2021-12-17 18:55:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:34,334 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2021-12-17 18:55:34,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2021-12-17 18:55:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:34,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:34,336 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] [2021-12-17 18:55:34,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:55:34,337 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2021-12-17 18:55:34,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:34,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4291787] [2021-12-17 18:55:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:34,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:34,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:34,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:34,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:34,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4291787] [2021-12-17 18:55:34,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4291787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:34,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:34,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:34,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779031255] [2021-12-17 18:55:34,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:34,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:34,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:34,439 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:36,370 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2021-12-17 18:55:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:55:36,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:36,389 INFO L225 Difference]: With dead ends: 7114 [2021-12-17 18:55:36,390 INFO L226 Difference]: Without dead ends: 5669 [2021-12-17 18:55:36,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:55:36,397 INFO L933 BasicCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22213 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:36,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 22213 Invalid, 2466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 18:55:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-12-17 18:55:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2021-12-17 18:55:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-17 18:55:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2021-12-17 18:55:36,552 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2021-12-17 18:55:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:36,553 INFO L470 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2021-12-17 18:55:36,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2021-12-17 18:55:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:36,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:36,556 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] [2021-12-17 18:55:36,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:55:36,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2021-12-17 18:55:36,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:36,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073588983] [2021-12-17 18:55:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:36,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:36,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:36,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:36,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073588983] [2021-12-17 18:55:36,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073588983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:36,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:36,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:36,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782685190] [2021-12-17 18:55:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:36,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:36,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:36,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:36,692 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:38,909 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2021-12-17 18:55:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:55:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:38,948 INFO L225 Difference]: With dead ends: 11253 [2021-12-17 18:55:38,948 INFO L226 Difference]: Without dead ends: 8671 [2021-12-17 18:55:38,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:55:38,959 INFO L933 BasicCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22208 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:38,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5209 Valid, 22208 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 18:55:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2021-12-17 18:55:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2021-12-17 18:55:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-17 18:55:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2021-12-17 18:55:39,202 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2021-12-17 18:55:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:39,203 INFO L470 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2021-12-17 18:55:39,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2021-12-17 18:55:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:39,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:39,207 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] [2021-12-17 18:55:39,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:55:39,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2021-12-17 18:55:39,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:39,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124232270] [2021-12-17 18:55:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:39,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:39,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:39,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124232270] [2021-12-17 18:55:39,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124232270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:39,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:39,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:39,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119923695] [2021-12-17 18:55:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:39,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:39,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:39,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:39,351 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:41,741 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2021-12-17 18:55:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:55:41,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:41,830 INFO L225 Difference]: With dead ends: 19532 [2021-12-17 18:55:41,831 INFO L226 Difference]: Without dead ends: 14669 [2021-12-17 18:55:41,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:55:41,879 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16918 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21465 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:41,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5288 Valid, 21465 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 18:55:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2021-12-17 18:55:42,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2021-12-17 18:55:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-17 18:55:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2021-12-17 18:55:42,442 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2021-12-17 18:55:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:42,442 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2021-12-17 18:55:42,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2021-12-17 18:55:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:42,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:42,449 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] [2021-12-17 18:55:42,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:55:42,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:42,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:42,450 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2021-12-17 18:55:42,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:42,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198076602] [2021-12-17 18:55:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:42,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:42,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:42,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198076602] [2021-12-17 18:55:42,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198076602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:42,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:42,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:42,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511584122] [2021-12-17 18:55:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:42,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:42,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:42,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:42,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:42,570 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:43,951 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2021-12-17 18:55:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:55:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:43,998 INFO L225 Difference]: With dead ends: 24276 [2021-12-17 18:55:43,998 INFO L226 Difference]: Without dead ends: 14836 [2021-12-17 18:55:44,028 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 [2021-12-17 18:55:44,029 INFO L933 BasicCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16944 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:44,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4996 Valid, 16944 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:55:44,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2021-12-17 18:55:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2021-12-17 18:55:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-17 18:55:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2021-12-17 18:55:44,585 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2021-12-17 18:55:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:44,587 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2021-12-17 18:55:44,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2021-12-17 18:55:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:44,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:44,600 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] [2021-12-17 18:55:44,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:55:44,600 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2021-12-17 18:55:44,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:44,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563132771] [2021-12-17 18:55:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:44,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:44,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:44,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:44,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563132771] [2021-12-17 18:55:44,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563132771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:44,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:44,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:44,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262740985] [2021-12-17 18:55:44,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:44,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:44,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:44,704 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:46,031 INFO L93 Difference]: Finished difference Result 24242 states and 39315 transitions. [2021-12-17 18:55:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:55:46,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:46,071 INFO L225 Difference]: With dead ends: 24242 [2021-12-17 18:55:46,072 INFO L226 Difference]: Without dead ends: 14802 [2021-12-17 18:55:46,091 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 [2021-12-17 18:55:46,092 INFO L933 BasicCegarLoop]: 4454 mSDtfsCounter, 4977 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 16940 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:46,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 16940 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 18:55:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14802 states. [2021-12-17 18:55:46,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14802 to 11578. [2021-12-17 18:55:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6154490460679385) internal successors, (17358), 10780 states have internal predecessors, (17358), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-17 18:55:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18833 transitions. [2021-12-17 18:55:46,496 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18833 transitions. Word has length 146 [2021-12-17 18:55:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:46,497 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18833 transitions. [2021-12-17 18:55:46,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18833 transitions. [2021-12-17 18:55:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:46,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:46,503 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] [2021-12-17 18:55:46,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:55:46,504 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2021-12-17 18:55:46,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:46,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039004723] [2021-12-17 18:55:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:46,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:46,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:46,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039004723] [2021-12-17 18:55:46,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039004723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:46,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:46,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:46,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480804195] [2021-12-17 18:55:46,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:46,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:46,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:46,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:46,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:46,604 INFO L87 Difference]: Start difference. First operand 11578 states and 18833 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:49,526 INFO L93 Difference]: Finished difference Result 36023 states and 57809 transitions. [2021-12-17 18:55:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:55:49,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:49,605 INFO L225 Difference]: With dead ends: 36023 [2021-12-17 18:55:49,605 INFO L226 Difference]: Without dead ends: 26583 [2021-12-17 18:55:49,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:55:49,632 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 5180 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22184 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:49,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22184 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 18:55:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26583 states. [2021-12-17 18:55:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26583 to 20829. [2021-12-17 18:55:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20829 states, 19196 states have (on average 1.5855386538862264) internal successors, (30436), 19263 states have internal predecessors, (30436), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2021-12-17 18:55:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20829 states to 20829 states and 33581 transitions. [2021-12-17 18:55:50,410 INFO L78 Accepts]: Start accepts. Automaton has 20829 states and 33581 transitions. Word has length 146 [2021-12-17 18:55:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:50,410 INFO L470 AbstractCegarLoop]: Abstraction has 20829 states and 33581 transitions. [2021-12-17 18:55:50,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand 20829 states and 33581 transitions. [2021-12-17 18:55:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:50,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:50,420 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] [2021-12-17 18:55:50,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:55:50,420 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2021-12-17 18:55:50,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:50,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221485147] [2021-12-17 18:55:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:50,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:50,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:50,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221485147] [2021-12-17 18:55:50,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221485147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:50,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:50,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:50,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470914622] [2021-12-17 18:55:50,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:50,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:50,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:50,582 INFO L87 Difference]: Start difference. First operand 20829 states and 33581 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:55,000 INFO L93 Difference]: Finished difference Result 76950 states and 123193 transitions. [2021-12-17 18:55:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:55:55,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:55:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:55,201 INFO L225 Difference]: With dead ends: 76950 [2021-12-17 18:55:55,202 INFO L226 Difference]: Without dead ends: 58259 [2021-12-17 18:55:55,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:55:55,465 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 5257 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 22301 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:55,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5272 Valid, 22301 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 18:55:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58259 states. [2021-12-17 18:55:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58259 to 38623. [2021-12-17 18:55:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38623 states, 35454 states have (on average 1.566198454335195) internal successors, (55528), 35585 states have internal predecessors, (55528), 2265 states have call successors, (2265), 775 states have call predecessors, (2265), 902 states have return successors, (4578), 2390 states have call predecessors, (4578), 2263 states have call successors, (4578) [2021-12-17 18:55:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38623 states to 38623 states and 62371 transitions. [2021-12-17 18:55:57,372 INFO L78 Accepts]: Start accepts. Automaton has 38623 states and 62371 transitions. Word has length 146 [2021-12-17 18:55:57,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:57,373 INFO L470 AbstractCegarLoop]: Abstraction has 38623 states and 62371 transitions. [2021-12-17 18:55:57,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:55:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 38623 states and 62371 transitions. [2021-12-17 18:55:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:55:57,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:57,395 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] [2021-12-17 18:55:57,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:55:57,395 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2021-12-17 18:55:57,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:57,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264877989] [2021-12-17 18:55:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:57,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:55:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:57,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:55:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:55:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:55:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:55:57,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:57,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264877989] [2021-12-17 18:55:57,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264877989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:57,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:55:57,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:55:57,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499774028] [2021-12-17 18:55:57,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:57,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:55:57,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:55:57,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:55:57,511 INFO L87 Difference]: Start difference. First operand 38623 states and 62371 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:00,949 INFO L93 Difference]: Finished difference Result 86516 states and 141372 transitions. [2021-12-17 18:56:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:56:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:01,133 INFO L225 Difference]: With dead ends: 86516 [2021-12-17 18:56:01,133 INFO L226 Difference]: Without dead ends: 50031 [2021-12-17 18:56:01,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:01,219 INFO L933 BasicCegarLoop]: 4440 mSDtfsCounter, 4845 mSDsluCounter, 16606 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4862 SdHoareTripleChecker+Valid, 21046 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:01,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4862 Valid, 21046 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:56:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50031 states. [2021-12-17 18:56:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50031 to 38623. [2021-12-17 18:56:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38623 states, 35454 states have (on average 1.5625599368195409) internal successors, (55399), 35585 states have internal predecessors, (55399), 2265 states have call successors, (2265), 775 states have call predecessors, (2265), 902 states have return successors, (4578), 2390 states have call predecessors, (4578), 2263 states have call successors, (4578) [2021-12-17 18:56:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38623 states to 38623 states and 62242 transitions. [2021-12-17 18:56:03,093 INFO L78 Accepts]: Start accepts. Automaton has 38623 states and 62242 transitions. Word has length 146 [2021-12-17 18:56:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:03,094 INFO L470 AbstractCegarLoop]: Abstraction has 38623 states and 62242 transitions. [2021-12-17 18:56:03,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 38623 states and 62242 transitions. [2021-12-17 18:56:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:56:03,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:03,108 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] [2021-12-17 18:56:03,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:56:03,109 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2021-12-17 18:56:03,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:03,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902384207] [2021-12-17 18:56:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:03,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:56:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:56:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:56:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:56:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:03,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:03,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902384207] [2021-12-17 18:56:03,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902384207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:03,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:03,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:03,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073168915] [2021-12-17 18:56:03,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:03,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:03,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:03,224 INFO L87 Difference]: Start difference. First operand 38623 states and 62242 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:10,717 INFO L93 Difference]: Finished difference Result 144980 states and 233593 transitions. [2021-12-17 18:56:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:56:10,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:56:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:11,124 INFO L225 Difference]: With dead ends: 144980 [2021-12-17 18:56:11,124 INFO L226 Difference]: Without dead ends: 108495 [2021-12-17 18:56:11,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:56:11,247 INFO L933 BasicCegarLoop]: 4705 mSDtfsCounter, 5419 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:11,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5445 Valid, 22154 Invalid, 2357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 18:56:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108495 states. [2021-12-17 18:56:15,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108495 to 74913. [2021-12-17 18:56:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74913 states, 68736 states have (on average 1.5536982076350092) internal successors, (106795), 68995 states have internal predecessors, (106795), 4377 states have call successors, (4377), 1543 states have call predecessors, (4377), 1798 states have return successors, (11192), 4630 states have call predecessors, (11192), 4375 states have call successors, (11192) [2021-12-17 18:56:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74913 states to 74913 states and 122364 transitions. [2021-12-17 18:56:15,559 INFO L78 Accepts]: Start accepts. Automaton has 74913 states and 122364 transitions. Word has length 146 [2021-12-17 18:56:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:15,559 INFO L470 AbstractCegarLoop]: Abstraction has 74913 states and 122364 transitions. [2021-12-17 18:56:15,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 74913 states and 122364 transitions. [2021-12-17 18:56:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 18:56:15,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:15,588 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] [2021-12-17 18:56:15,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:56:15,589 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash -177302660, now seen corresponding path program 1 times [2021-12-17 18:56:15,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:15,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947518788] [2021-12-17 18:56:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:15,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 18:56:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 18:56:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 18:56:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 18:56:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:15,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:15,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947518788] [2021-12-17 18:56:15,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947518788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:15,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:15,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:15,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660835039] [2021-12-17 18:56:15,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:15,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:15,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:15,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:15,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:15,675 INFO L87 Difference]: Start difference. First operand 74913 states and 122364 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:21,903 INFO L93 Difference]: Finished difference Result 169332 states and 281659 transitions. [2021-12-17 18:56:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:21,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-17 18:56:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:22,264 INFO L225 Difference]: With dead ends: 169332 [2021-12-17 18:56:22,264 INFO L226 Difference]: Without dead ends: 96557 [2021-12-17 18:56:22,592 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 [2021-12-17 18:56:22,593 INFO L933 BasicCegarLoop]: 4421 mSDtfsCounter, 4866 mSDsluCounter, 16605 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4883 SdHoareTripleChecker+Valid, 21026 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:22,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4883 Valid, 21026 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:56:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96557 states.