./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.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 21399f6c1c6de0b812a418410b61643449f7872d7a63a6928748a1ba61200764 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:22:39,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:22:39,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:22:39,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:22:39,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:22:39,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:22:39,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:22:39,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:22:39,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:22:39,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:22:39,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:22:39,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:22:39,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:22:39,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:22:39,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:22:39,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:22:39,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:22:39,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:22:39,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:22:39,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:22:39,125 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:22:39,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:22:39,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:22:39,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:22:39,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:22:39,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:22:39,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:22:39,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:22:39,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:22:39,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:22:39,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:22:39,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:22:39,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:22:39,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:22:39,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:22:39,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:22:39,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:22:39,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:22:39,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:22:39,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:22:39,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:22:39,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:22:39,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:22:39,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:22:39,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:22:39,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:22:39,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:22:39,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:22:39,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:22:39,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:22:39,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:22:39,179 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:22:39,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:22:39,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:22:39,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:22:39,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:22:39,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:22:39,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:22:39,183 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:22:39,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:22:39,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:22:39,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21399f6c1c6de0b812a418410b61643449f7872d7a63a6928748a1ba61200764 [2022-07-12 08:22:39,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:22:39,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:22:39,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:22:39,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:22:39,372 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:22:39,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c [2022-07-12 08:22:39,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1205633e/95565de1c97b4065a2866e3080bc7259/FLAG36040d567 [2022-07-12 08:22:40,172 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:22:40,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c [2022-07-12 08:22:40,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1205633e/95565de1c97b4065a2866e3080bc7259/FLAG36040d567 [2022-07-12 08:22:40,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1205633e/95565de1c97b4065a2866e3080bc7259 [2022-07-12 08:22:40,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:22:40,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:22:40,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:22:40,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:22:40,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:22:40,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:22:40" (1/1) ... [2022-07-12 08:22:40,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2881c27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:40, skipping insertion in model container [2022-07-12 08:22:40,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:22:40" (1/1) ... [2022-07-12 08:22:40,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:22:40,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:22:41,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c[382357,382370] [2022-07-12 08:22:42,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c[383339,383352] [2022-07-12 08:22:42,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:22:42,151 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:22:42,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c[382357,382370] [2022-07-12 08:22:42,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c[383339,383352] [2022-07-12 08:22:42,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:22:42,760 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:22:42,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42 WrapperNode [2022-07-12 08:22:42,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:22:42,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:22:42,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:22:42,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:22:42,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:42,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,093 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2022-07-12 08:22:43,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:22:43,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:22:43,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:22:43,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:22:43,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:22:43,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:22:43,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:22:43,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:22:43,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (1/1) ... [2022-07-12 08:22:43,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:22:43,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:43,685 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) [2022-07-12 08:22:43,704 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 [2022-07-12 08:22:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:22:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:22:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:22:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:22:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:22:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:22:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:22:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:22:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:22:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:22:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:22:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:22:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:22:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:22:43,821 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:22:43,822 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:22:48,439 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:22:48,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:22:48,458 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-12 08:22:48,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:22:48 BoogieIcfgContainer [2022-07-12 08:22:48,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:22:48,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:22:48,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:22:48,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:22:48,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:22:40" (1/3) ... [2022-07-12 08:22:48,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e877b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:22:48, skipping insertion in model container [2022-07-12 08:22:48,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:42" (2/3) ... [2022-07-12 08:22:48,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e877b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:22:48, skipping insertion in model container [2022-07-12 08:22:48,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:22:48" (3/3) ... [2022-07-12 08:22:48,466 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.05.cil-2.c [2022-07-12 08:22:48,475 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:22:48,475 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:22:48,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:22:48,529 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69b88781, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@b771223 [2022-07-12 08:22:48,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:22:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-12 08:22:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:48,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:48,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:48,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2022-07-12 08:22:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:48,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106157363] [2022-07-12 08:22:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:48,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:48,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:48,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106157363] [2022-07-12 08:22:48,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106157363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:48,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:48,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:22:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130984109] [2022-07-12 08:22:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:22:48,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:22:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:22:48,811 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-07-12 08:22:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:49,448 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2022-07-12 08:22:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:22:49,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 102 [2022-07-12 08:22:49,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:49,471 INFO L225 Difference]: With dead ends: 4852 [2022-07-12 08:22:49,472 INFO L226 Difference]: Without dead ends: 2395 [2022-07-12 08:22:49,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:49,488 INFO L413 NwaCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16674 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:49,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 16674 Invalid, 402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 08:22:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-07-12 08:22:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2022-07-12 08:22:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 08:22:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2022-07-12 08:22:49,653 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2022-07-12 08:22:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:49,653 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2022-07-12 08:22:49,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-07-12 08:22:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2022-07-12 08:22:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:49,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:49,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:49,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:22:49,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:49,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2022-07-12 08:22:49,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:49,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306571923] [2022-07-12 08:22:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:49,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:49,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306571923] [2022-07-12 08:22:49,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306571923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:49,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:49,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:22:49,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685943576] [2022-07-12 08:22:49,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:49,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:22:49,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:49,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:22:49,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:22:49,802 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-12 08:22:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:51,064 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2022-07-12 08:22:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:22:51,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-07-12 08:22:51,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:51,075 INFO L225 Difference]: With dead ends: 2856 [2022-07-12 08:22:51,075 INFO L226 Difference]: Without dead ends: 2660 [2022-07-12 08:22:51,078 INFO L412 NwaCegarLoop]: 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 [2022-07-12 08:22:51,079 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16743 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:51,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4733 Valid, 16743 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-07-12 08:22:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2022-07-12 08:22:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-12 08:22:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2022-07-12 08:22:51,161 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2022-07-12 08:22:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:51,161 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2022-07-12 08:22:51,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-12 08:22:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2022-07-12 08:22:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:51,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:51,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:51,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:22:51,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2022-07-12 08:22:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:51,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831377983] [2022-07-12 08:22:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:51,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:51,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831377983] [2022-07-12 08:22:51,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831377983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:51,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:51,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:51,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255752362] [2022-07-12 08:22:51,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:51,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:51,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:51,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:51,294 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:52,576 INFO L93 Difference]: Finished difference Result 3324 states and 5839 transitions. [2022-07-12 08:22:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:52,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:22:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:52,592 INFO L225 Difference]: With dead ends: 3324 [2022-07-12 08:22:52,592 INFO L226 Difference]: Without dead ends: 2929 [2022-07-12 08:22:52,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:52,594 INFO L413 NwaCegarLoop]: 4485 mSDtfsCounter, 4725 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:52,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 21376 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:22:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-07-12 08:22:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2715. [2022-07-12 08:22:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2644 states have (on average 1.8037065052950076) internal successors, (4769), 2649 states have internal predecessors, (4769), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-12 08:22:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4870 transitions. [2022-07-12 08:22:52,643 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4870 transitions. Word has length 102 [2022-07-12 08:22:52,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:52,644 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4870 transitions. [2022-07-12 08:22:52,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:52,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4870 transitions. [2022-07-12 08:22:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:52,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:52,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:52,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:22:52,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:52,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2022-07-12 08:22:52,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:52,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533346447] [2022-07-12 08:22:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:52,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:52,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:52,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533346447] [2022-07-12 08:22:52,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533346447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:52,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:52,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:52,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655678139] [2022-07-12 08:22:52,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:52,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:52,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:52,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:52,737 INFO L87 Difference]: Start difference. First operand 2715 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:53,988 INFO L93 Difference]: Finished difference Result 4012 states and 6910 transitions. [2022-07-12 08:22:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:53,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:22:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:54,000 INFO L225 Difference]: With dead ends: 4012 [2022-07-12 08:22:54,001 INFO L226 Difference]: Without dead ends: 3431 [2022-07-12 08:22:54,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:54,003 INFO L413 NwaCegarLoop]: 4473 mSDtfsCounter, 4719 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 21364 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:54,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 21364 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-07-12 08:22:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3091. [2022-07-12 08:22:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 2978 states have (on average 1.77367360644728) internal successors, (5282), 2985 states have internal predecessors, (5282), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-12 08:22:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 5447 transitions. [2022-07-12 08:22:54,068 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 5447 transitions. Word has length 102 [2022-07-12 08:22:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:54,069 INFO L495 AbstractCegarLoop]: Abstraction has 3091 states and 5447 transitions. [2022-07-12 08:22:54,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:54,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 5447 transitions. [2022-07-12 08:22:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:54,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:54,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:22:54,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2022-07-12 08:22:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:54,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464561122] [2022-07-12 08:22:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:54,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:54,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464561122] [2022-07-12 08:22:54,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464561122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:54,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:54,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834199197] [2022-07-12 08:22:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:54,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:54,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:54,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:54,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:54,142 INFO L87 Difference]: Start difference. First operand 3091 states and 5447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:55,355 INFO L93 Difference]: Finished difference Result 5346 states and 8979 transitions. [2022-07-12 08:22:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:22:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:55,371 INFO L225 Difference]: With dead ends: 5346 [2022-07-12 08:22:55,371 INFO L226 Difference]: Without dead ends: 4389 [2022-07-12 08:22:55,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:55,376 INFO L413 NwaCegarLoop]: 4468 mSDtfsCounter, 4718 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21359 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:55,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 21359 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-07-12 08:22:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3844. [2022-07-12 08:22:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3647 states have (on average 1.7296408006580752) internal successors, (6308), 3658 states have internal predecessors, (6308), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-12 08:22:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6607 transitions. [2022-07-12 08:22:55,472 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6607 transitions. Word has length 102 [2022-07-12 08:22:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:55,472 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6607 transitions. [2022-07-12 08:22:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6607 transitions. [2022-07-12 08:22:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:55,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:55,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:55,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:22:55,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2022-07-12 08:22:55,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:55,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607276804] [2022-07-12 08:22:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:55,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:55,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:55,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:55,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607276804] [2022-07-12 08:22:55,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607276804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:55,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:55,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:55,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177042885] [2022-07-12 08:22:55,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:55,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:55,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:55,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:55,603 INFO L87 Difference]: Start difference. First operand 3844 states and 6607 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:56,931 INFO L93 Difference]: Finished difference Result 8013 states and 13133 transitions. [2022-07-12 08:22:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:22:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:56,954 INFO L225 Difference]: With dead ends: 8013 [2022-07-12 08:22:56,954 INFO L226 Difference]: Without dead ends: 6303 [2022-07-12 08:22:56,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:56,963 INFO L413 NwaCegarLoop]: 4463 mSDtfsCounter, 4717 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4729 SdHoareTripleChecker+Valid, 21354 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:56,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4729 Valid, 21354 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-07-12 08:22:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 5357. [2022-07-12 08:22:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 4992 states have (on average 1.6766826923076923) internal successors, (8370), 5011 states have internal predecessors, (8370), 245 states have call successors, (245), 103 states have call predecessors, (245), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-12 08:22:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8955 transitions. [2022-07-12 08:22:57,146 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8955 transitions. Word has length 102 [2022-07-12 08:22:57,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:57,146 INFO L495 AbstractCegarLoop]: Abstraction has 5357 states and 8955 transitions. [2022-07-12 08:22:57,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:57,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8955 transitions. [2022-07-12 08:22:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:57,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:57,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:22:57,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2022-07-12 08:22:57,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97955386] [2022-07-12 08:22:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:57,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:57,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:57,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97955386] [2022-07-12 08:22:57,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97955386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:57,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:57,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:57,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285728286] [2022-07-12 08:22:57,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:57,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:57,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:57,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:57,243 INFO L87 Difference]: Start difference. First operand 5357 states and 8955 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:58,753 INFO L93 Difference]: Finished difference Result 14612 states and 23393 transitions. [2022-07-12 08:22:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:22:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:58,791 INFO L225 Difference]: With dead ends: 14612 [2022-07-12 08:22:58,792 INFO L226 Difference]: Without dead ends: 11389 [2022-07-12 08:22:58,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:58,803 INFO L413 NwaCegarLoop]: 4331 mSDtfsCounter, 4979 mSDsluCounter, 16535 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 20866 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:58,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4997 Valid, 20866 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11389 states. [2022-07-12 08:22:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 8350. [2022-07-12 08:22:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 7665 states have (on average 1.6287018917155904) internal successors, (12484), 7700 states have internal predecessors, (12484), 453 states have call successors, (453), 199 states have call predecessors, (453), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-12 08:22:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 13663 transitions. [2022-07-12 08:22:59,070 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 13663 transitions. Word has length 102 [2022-07-12 08:22:59,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:59,070 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 13663 transitions. [2022-07-12 08:22:59,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:22:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 13663 transitions. [2022-07-12 08:22:59,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:22:59,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:59,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:59,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:22:59,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:59,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2022-07-12 08:22:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:59,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996562237] [2022-07-12 08:22:59,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:22:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:22:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:59,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:22:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:59,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:22:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:59,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:59,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996562237] [2022-07-12 08:22:59,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996562237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:59,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:59,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834430831] [2022-07-12 08:22:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:59,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:59,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:59,149 INFO L87 Difference]: Start difference. First operand 8350 states and 13663 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:00,928 INFO L93 Difference]: Finished difference Result 26019 states and 41415 transitions. [2022-07-12 08:23:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:23:00,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:23:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:23:00,979 INFO L225 Difference]: With dead ends: 26019 [2022-07-12 08:23:00,980 INFO L226 Difference]: Without dead ends: 19803 [2022-07-12 08:23:01,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:23:01,001 INFO L413 NwaCegarLoop]: 4526 mSDtfsCounter, 4757 mSDsluCounter, 16880 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21406 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:23:01,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21406 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:23:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2022-07-12 08:23:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 13999. [2022-07-12 08:23:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13999 states, 12690 states have (on average 1.5878644602048857) internal successors, (20150), 12757 states have internal predecessors, (20150), 853 states have call successors, (853), 391 states have call predecessors, (853), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-12 08:23:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 22647 transitions. [2022-07-12 08:23:01,511 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 22647 transitions. Word has length 102 [2022-07-12 08:23:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:23:01,512 INFO L495 AbstractCegarLoop]: Abstraction has 13999 states and 22647 transitions. [2022-07-12 08:23:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 22647 transitions. [2022-07-12 08:23:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:23:01,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:23:01,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:23:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:23:01,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:23:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:23:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2022-07-12 08:23:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:23:01,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256796109] [2022-07-12 08:23:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:23:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:23:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:01,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:23:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:01,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:23:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:23:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:23:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:23:01,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:23:01,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256796109] [2022-07-12 08:23:01,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256796109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:23:01,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:23:01,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:23:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278371860] [2022-07-12 08:23:01,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:23:01,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:23:01,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:23:01,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:23:01,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:23:01,599 INFO L87 Difference]: Start difference. First operand 13999 states and 22647 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:04,119 INFO L93 Difference]: Finished difference Result 47282 states and 75405 transitions. [2022-07-12 08:23:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:23:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:23:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:23:04,216 INFO L225 Difference]: With dead ends: 47282 [2022-07-12 08:23:04,216 INFO L226 Difference]: Without dead ends: 35417 [2022-07-12 08:23:04,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:23:04,257 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4849 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:23:04,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4867 Valid, 21329 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:23:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35417 states. [2022-07-12 08:23:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35417 to 25584. [2022-07-12 08:23:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25584 states, 23059 states have (on average 1.5650288390650071) internal successors, (36088), 23190 states have internal predecessors, (36088), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-12 08:23:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25584 states to 25584 states and 41643 transitions. [2022-07-12 08:23:05,396 INFO L78 Accepts]: Start accepts. Automaton has 25584 states and 41643 transitions. Word has length 102 [2022-07-12 08:23:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:23:05,397 INFO L495 AbstractCegarLoop]: Abstraction has 25584 states and 41643 transitions. [2022-07-12 08:23:05,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25584 states and 41643 transitions. [2022-07-12 08:23:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:23:05,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:23:05,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:23:05,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:23:05,411 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:23:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:23:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2022-07-12 08:23:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:23:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108942880] [2022-07-12 08:23:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:23:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:23:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:23:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:23:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:23:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:23:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:23:05,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:23:05,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108942880] [2022-07-12 08:23:05,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108942880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:23:05,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:23:05,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:23:05,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537898555] [2022-07-12 08:23:05,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:23:05,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:23:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:23:05,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:23:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:23:05,490 INFO L87 Difference]: Start difference. First operand 25584 states and 41643 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:09,586 INFO L93 Difference]: Finished difference Result 89521 states and 145107 transitions. [2022-07-12 08:23:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:23:09,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:23:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:23:09,833 INFO L225 Difference]: With dead ends: 89521 [2022-07-12 08:23:09,834 INFO L226 Difference]: Without dead ends: 66071 [2022-07-12 08:23:09,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:23:09,899 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4812 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 21322 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:23:09,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 21322 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:23:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66071 states. [2022-07-12 08:23:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66071 to 48689. [2022-07-12 08:23:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.553246871860444) internal successors, (68026), 44055 states have internal predecessors, (68026), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-12 08:23:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 81027 transitions. [2022-07-12 08:23:12,690 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 81027 transitions. Word has length 102 [2022-07-12 08:23:12,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:23:12,690 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 81027 transitions. [2022-07-12 08:23:12,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 81027 transitions. [2022-07-12 08:23:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:23:12,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:23:12,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:23:12,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:23:12,721 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:23:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:23:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2022-07-12 08:23:12,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:23:12,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055005125] [2022-07-12 08:23:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:23:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:23:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:12,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:23:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:23:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:23:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:12,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:23:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:23:12,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:23:12,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055005125] [2022-07-12 08:23:12,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055005125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:23:12,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:23:12,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:23:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096936045] [2022-07-12 08:23:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:23:12,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:23:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:23:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:23:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:23:12,813 INFO L87 Difference]: Start difference. First operand 48689 states and 81027 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:16,454 INFO L93 Difference]: Finished difference Result 107098 states and 182436 transitions. [2022-07-12 08:23:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:23:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-12 08:23:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:23:16,693 INFO L225 Difference]: With dead ends: 107098 [2022-07-12 08:23:16,694 INFO L226 Difference]: Without dead ends: 60543 [2022-07-12 08:23:16,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:23:16,793 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4522 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 20603 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:23:16,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 20603 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:23:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60543 states. [2022-07-12 08:23:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60543 to 48689. [2022-07-12 08:23:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.5473787560507808) internal successors, (67769), 44055 states have internal predecessors, (67769), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-12 08:23:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 80770 transitions. [2022-07-12 08:23:19,700 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 80770 transitions. Word has length 102 [2022-07-12 08:23:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:23:19,701 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 80770 transitions. [2022-07-12 08:23:19,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-12 08:23:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 80770 transitions. [2022-07-12 08:23:19,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 08:23:19,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:23:19,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:23:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:23:19,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:23:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:23:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash 724154490, now seen corresponding path program 1 times [2022-07-12 08:23:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:23:19,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922369381] [2022-07-12 08:23:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:23:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:19,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:23:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:19,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:23:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:23:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:23:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:19,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:23:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:23:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:23:19,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922369381] [2022-07-12 08:23:19,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922369381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:23:19,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:23:19,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:23:19,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767896208] [2022-07-12 08:23:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:23:19,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:23:19,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:23:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:23:19,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:23:19,798 INFO L87 Difference]: Start difference. First operand 48689 states and 80770 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-12 08:23:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:25,945 INFO L93 Difference]: Finished difference Result 135211 states and 220744 transitions. [2022-07-12 08:23:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:23:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-07-12 08:23:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:23:26,214 INFO L225 Difference]: With dead ends: 135211 [2022-07-12 08:23:26,214 INFO L226 Difference]: Without dead ends: 88657 [2022-07-12 08:23:26,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 08:23:26,314 INFO L413 NwaCegarLoop]: 4572 mSDtfsCounter, 4929 mSDsluCounter, 12525 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 17097 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:23:26,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 17097 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:23:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88657 states. [2022-07-12 08:23:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88657 to 71452. [2022-07-12 08:23:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71452 states, 64042 states have (on average 1.5303394647262734) internal successors, (98006), 64558 states have internal predecessors, (98006), 4708 states have call successors, (4708), 2317 states have call predecessors, (4708), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2022-07-12 08:23:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71452 states to 71452 states and 116425 transitions. [2022-07-12 08:23:30,224 INFO L78 Accepts]: Start accepts. Automaton has 71452 states and 116425 transitions. Word has length 102 [2022-07-12 08:23:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:23:30,224 INFO L495 AbstractCegarLoop]: Abstraction has 71452 states and 116425 transitions. [2022-07-12 08:23:30,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-12 08:23:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 71452 states and 116425 transitions. [2022-07-12 08:23:30,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-12 08:23:30,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:23:30,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:23:30,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 08:23:30,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:23:30,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:23:30,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1880616710, now seen corresponding path program 1 times [2022-07-12 08:23:30,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:23:30,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462467768] [2022-07-12 08:23:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:30,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:23:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:23:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:23:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:23:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:23:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:23:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 08:23:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:23:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 08:23:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:23:30,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:23:30,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462467768] [2022-07-12 08:23:30,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462467768] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:23:30,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782038862] [2022-07-12 08:23:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:30,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:23:30,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:23:30,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:23:30,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:23:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:30,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:23:30,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:23:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 08:23:30,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:23:30,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782038862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:23:30,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:23:30,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:23:30,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145479352] [2022-07-12 08:23:30,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:23:30,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:23:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:23:30,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:23:30,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:23:30,688 INFO L87 Difference]: Start difference. First operand 71452 states and 116425 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:23:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:36,887 INFO L93 Difference]: Finished difference Result 208731 states and 341317 transitions. [2022-07-12 08:23:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:23:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2022-07-12 08:23:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:23:37,387 INFO L225 Difference]: With dead ends: 208731 [2022-07-12 08:23:37,388 INFO L226 Difference]: Without dead ends: 139414 [2022-07-12 08:23:37,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:23:37,535 INFO L413 NwaCegarLoop]: 4286 mSDtfsCounter, 4204 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:23:37,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 4573 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:23:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139414 states.