./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_label45+token_ring.12.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 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:16:55,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:16:55,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:16:55,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:16:55,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:16:55,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:16:55,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:16:55,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:16:55,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:16:55,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:16:55,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:16:55,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:16:55,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:16:55,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:16:55,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:16:55,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:16:55,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:16:55,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:16:55,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:16:55,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:16:55,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:16:55,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:16:55,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:16:55,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:16:55,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:16:55,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:16:55,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:16:55,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:16:55,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:16:55,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:16:55,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:16:55,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:16:55,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:16:55,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:16:55,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:16:55,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:16:55,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:16:55,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:16:55,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:16:55,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:16:55,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:16:55,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:16:55,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:16:55,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:16:55,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:16:55,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:16:55,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:16:55,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:16:55,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:16:55,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:16:55,650 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:16:55,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:16:55,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:16:55,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:16:55,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:16:55,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:16:55,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:16:55,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:16:55,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:16:55,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:16:55,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:16:55,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:16:55,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:16:55,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:16:55,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:16:55,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:16:55,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:16:55,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:16:55,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:16:55,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:16:55,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:16:55,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:16:55,655 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:16:55,655 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:16:55,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:16:55,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:16:55,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 [2021-12-21 14:16:55,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:16:55,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:16:55,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:16:55,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:16:55,863 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:16:55,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2021-12-21 14:16:55,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05d6a577f/a2d38cf5497b4e01b426d283bff06492/FLAGf082dbe0e [2021-12-21 14:16:56,650 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:16:56,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2021-12-21 14:16:56,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05d6a577f/a2d38cf5497b4e01b426d283bff06492/FLAGf082dbe0e [2021-12-21 14:16:57,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05d6a577f/a2d38cf5497b4e01b426d283bff06492 [2021-12-21 14:16:57,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:16:57,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:16:57,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:16:57,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:16:57,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:16:57,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:57" (1/1) ... [2021-12-21 14:16:57,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44981a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:57, skipping insertion in model container [2021-12-21 14:16:57,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:57" (1/1) ... [2021-12-21 14:16:57,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:16:57,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:16:58,848 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_label45+token_ring.12.cil-2.c[380323,380336] [2021-12-21 14:16:58,878 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_label45+token_ring.12.cil-2.c[383339,383352] [2021-12-21 14:16:59,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:16:59,186 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:16:59,918 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_label45+token_ring.12.cil-2.c[380323,380336] [2021-12-21 14:16:59,925 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_label45+token_ring.12.cil-2.c[383339,383352] [2021-12-21 14:16:59,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:17:00,108 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:17:00,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00 WrapperNode [2021-12-21 14:17:00,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:17:00,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:17:00,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:17:00,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:17:00,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:00,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:00,566 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-21 14:17:00,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:17:00,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:17:00,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:17:00,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:17:00,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:00,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:00,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:00,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:00,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:00,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:01,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:01,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:17:01,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:17:01,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:17:01,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:17:01,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (1/1) ... [2021-12-21 14:17:01,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:17:01,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:17:01,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 14:17:01,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 14:17:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:17:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:17:01,243 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:17:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:17:01,243 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:17:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:17:01,243 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:17:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:17:01,244 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:17:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:17:01,244 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:17:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:17:01,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:17:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:17:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:17:01,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:17:01,450 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:17:01,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:17:07,239 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:17:07,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:17:07,266 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-21 14:17:07,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:17:07 BoogieIcfgContainer [2021-12-21 14:17:07,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:17:07,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:17:07,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:17:07,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:17:07,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:16:57" (1/3) ... [2021-12-21 14:17:07,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656d9218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:17:07, skipping insertion in model container [2021-12-21 14:17:07,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:17:00" (2/3) ... [2021-12-21 14:17:07,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656d9218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:17:07, skipping insertion in model container [2021-12-21 14:17:07,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:17:07" (3/3) ... [2021-12-21 14:17:07,277 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-2.c [2021-12-21 14:17:07,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:17:07,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:17:07,323 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:17:07,327 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:17:07,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:17:07,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-21 14:17:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:07,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:07,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:07,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-21 14:17:07,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:07,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903969507] [2021-12-21 14:17:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:07,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:07,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:07,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903969507] [2021-12-21 14:17:07,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903969507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:07,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:07,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:17:07,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658590855] [2021-12-21 14:17:07,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:07,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:17:07,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:07,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:17:07,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:17:08,001 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:09,722 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-21 14:17:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:17:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:09,750 INFO L225 Difference]: With dead ends: 5266 [2021-12-21 14:17:09,751 INFO L226 Difference]: Without dead ends: 2640 [2021-12-21 14:17:09,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:17:09,765 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17168 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:09,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17168 Invalid, 763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:17:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-21 14:17:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-21 14:17:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-21 14:17:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-21 14:17:09,927 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-21 14:17:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:09,928 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-21 14:17:09,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-21 14:17:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:09,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:09,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:09,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:17:09,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-21 14:17:09,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:09,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294082473] [2021-12-21 14:17:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:09,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:10,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:10,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294082473] [2021-12-21 14:17:10,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294082473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:10,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:10,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:17:10,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409162122] [2021-12-21 14:17:10,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:10,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:17:10,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:10,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:17:10,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:17:10,136 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:11,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:11,536 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-21 14:17:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:17:11,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:11,548 INFO L225 Difference]: With dead ends: 3002 [2021-12-21 14:17:11,548 INFO L226 Difference]: Without dead ends: 2640 [2021-12-21 14:17:11,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:17:11,551 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16895 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:11,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16895 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:17:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-21 14:17:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-21 14:17:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-21 14:17:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-21 14:17:11,616 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-21 14:17:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:11,617 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-21 14:17:11,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-21 14:17:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:11,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:11,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:11,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:17:11,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:11,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:11,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-21 14:17:11,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:11,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140230674] [2021-12-21 14:17:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:11,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:11,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:11,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:11,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140230674] [2021-12-21 14:17:11,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140230674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:11,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:11,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:17:11,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509950450] [2021-12-21 14:17:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:11,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:17:11,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:17:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:17:11,792 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:14,671 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-21 14:17:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:17:14,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:14,685 INFO L225 Difference]: With dead ends: 3514 [2021-12-21 14:17:14,685 INFO L226 Difference]: Without dead ends: 3157 [2021-12-21 14:17:14,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:17:14,695 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12878 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17543 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:14,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17543 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:17:14,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-21 14:17:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-21 14:17:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-21 14:17:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-21 14:17:14,810 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-21 14:17:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:14,811 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-21 14:17:14,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-21 14:17:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:14,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:14,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:14,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:17:14,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-21 14:17:14,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:14,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241369793] [2021-12-21 14:17:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:14,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:14,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:14,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:14,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241369793] [2021-12-21 14:17:14,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241369793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:14,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:14,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:14,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372463478] [2021-12-21 14:17:14,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:14,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:14,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:14,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:14,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:14,993 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:18,333 INFO L93 Difference]: Finished difference Result 4427 states and 7672 transitions. [2021-12-21 14:17:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:17:18,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:18,349 INFO L225 Difference]: With dead ends: 4427 [2021-12-21 14:17:18,350 INFO L226 Difference]: Without dead ends: 3694 [2021-12-21 14:17:18,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:17:18,362 INFO L933 BasicCegarLoop]: 4964 mSDtfsCounter, 5539 mSDsluCounter, 17768 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22732 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:18,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22732 Invalid, 3135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 14:17:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2021-12-21 14:17:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3223. [2021-12-21 14:17:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7736993297159271) internal successors, (5557), 3137 states have internal predecessors, (5557), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-21 14:17:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5698 transitions. [2021-12-21 14:17:18,494 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5698 transitions. Word has length 178 [2021-12-21 14:17:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:18,495 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5698 transitions. [2021-12-21 14:17:18,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5698 transitions. [2021-12-21 14:17:18,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:18,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:18,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:18,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:17:18,504 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:18,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-21 14:17:18,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:18,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149827132] [2021-12-21 14:17:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:18,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:18,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:18,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:18,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149827132] [2021-12-21 14:17:18,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149827132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:18,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:18,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:18,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596374990] [2021-12-21 14:17:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:18,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:18,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:18,676 INFO L87 Difference]: Start difference. First operand 3223 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:21,737 INFO L93 Difference]: Finished difference Result 5773 states and 9826 transitions. [2021-12-21 14:17:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:17:21,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:21,755 INFO L225 Difference]: With dead ends: 5773 [2021-12-21 14:17:21,756 INFO L226 Difference]: Without dead ends: 4691 [2021-12-21 14:17:21,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:17:21,760 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 5648 mSDsluCounter, 17123 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 21832 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:21,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 21832 Invalid, 2833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 14:17:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-12-21 14:17:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 3922. [2021-12-21 14:17:21,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3776 states have (on average 1.7378177966101696) internal successors, (6562), 3782 states have internal predecessors, (6562), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-21 14:17:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6795 transitions. [2021-12-21 14:17:21,934 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6795 transitions. Word has length 178 [2021-12-21 14:17:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:21,935 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 6795 transitions. [2021-12-21 14:17:21,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6795 transitions. [2021-12-21 14:17:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:21,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:21,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:21,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:17:21,951 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-21 14:17:21,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:21,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298335669] [2021-12-21 14:17:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:21,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:22,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:22,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298335669] [2021-12-21 14:17:22,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298335669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:22,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:22,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:22,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382842083] [2021-12-21 14:17:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:22,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:22,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:22,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:22,125 INFO L87 Difference]: Start difference. First operand 3922 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:25,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:25,247 INFO L93 Difference]: Finished difference Result 8360 states and 13939 transitions. [2021-12-21 14:17:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:17:25,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:25,281 INFO L225 Difference]: With dead ends: 8360 [2021-12-21 14:17:25,282 INFO L226 Difference]: Without dead ends: 6579 [2021-12-21 14:17:25,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:17:25,290 INFO L933 BasicCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22716 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:25,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5553 Valid, 22716 Invalid, 3143 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 14:17:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2021-12-21 14:17:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 5321. [2021-12-21 14:17:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5063 states have (on average 1.693067351372704) internal successors, (8572), 5073 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-21 14:17:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8995 transitions. [2021-12-21 14:17:25,614 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8995 transitions. Word has length 178 [2021-12-21 14:17:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:25,614 INFO L470 AbstractCegarLoop]: Abstraction has 5321 states and 8995 transitions. [2021-12-21 14:17:25,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8995 transitions. [2021-12-21 14:17:25,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:25,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:25,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:25,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:17:25,619 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-21 14:17:25,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:25,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750131932] [2021-12-21 14:17:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:25,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:25,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:25,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750131932] [2021-12-21 14:17:25,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750131932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:25,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:25,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:25,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706530520] [2021-12-21 14:17:25,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:25,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:25,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:25,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:25,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:25,804 INFO L87 Difference]: Start difference. First operand 5321 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:29,203 INFO L93 Difference]: Finished difference Result 13526 states and 22169 transitions. [2021-12-21 14:17:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:17:29,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:29,244 INFO L225 Difference]: With dead ends: 13526 [2021-12-21 14:17:29,245 INFO L226 Difference]: Without dead ends: 10346 [2021-12-21 14:17:29,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:17:29,259 INFO L933 BasicCegarLoop]: 4944 mSDtfsCounter, 5529 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 22708 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:29,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5548 Valid, 22708 Invalid, 3124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:17:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2021-12-21 14:17:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 8133. [2021-12-21 14:17:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 7651 states have (on average 1.6489347797673506) internal successors, (12616), 7669 states have internal predecessors, (12616), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-21 14:17:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 13437 transitions. [2021-12-21 14:17:29,820 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 13437 transitions. Word has length 178 [2021-12-21 14:17:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:29,820 INFO L470 AbstractCegarLoop]: Abstraction has 8133 states and 13437 transitions. [2021-12-21 14:17:29,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 13437 transitions. [2021-12-21 14:17:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:29,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:29,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:29,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:17:29,826 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-21 14:17:29,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:29,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859718837] [2021-12-21 14:17:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:29,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:29,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:29,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859718837] [2021-12-21 14:17:29,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859718837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:29,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:29,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:29,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628753752] [2021-12-21 14:17:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:29,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:29,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:29,967 INFO L87 Difference]: Start difference. First operand 8133 states and 13437 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:33,671 INFO L93 Difference]: Finished difference Result 23876 states and 38721 transitions. [2021-12-21 14:17:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:17:33,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:33,735 INFO L225 Difference]: With dead ends: 23876 [2021-12-21 14:17:33,735 INFO L226 Difference]: Without dead ends: 17884 [2021-12-21 14:17:33,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:17:33,759 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5528 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5547 SdHoareTripleChecker+Valid, 22703 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:33,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5547 Valid, 22703 Invalid, 3116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 14:17:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2021-12-21 14:17:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 13770. [2021-12-21 14:17:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6138629283489097) internal successors, (20722), 12874 states have internal predecessors, (20722), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-21 14:17:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22393 transitions. [2021-12-21 14:17:34,753 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22393 transitions. Word has length 178 [2021-12-21 14:17:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:34,753 INFO L470 AbstractCegarLoop]: Abstraction has 13770 states and 22393 transitions. [2021-12-21 14:17:34,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22393 transitions. [2021-12-21 14:17:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:34,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:34,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:34,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:17:34,762 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:34,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-21 14:17:34,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:34,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58008350] [2021-12-21 14:17:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:34,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:34,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:34,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58008350] [2021-12-21 14:17:34,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58008350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:34,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:34,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:34,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169717872] [2021-12-21 14:17:34,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:34,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:34,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:34,914 INFO L87 Difference]: Start difference. First operand 13770 states and 22393 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:37,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:37,656 INFO L93 Difference]: Finished difference Result 29766 states and 48386 transitions. [2021-12-21 14:17:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:17:37,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:37,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:37,719 INFO L225 Difference]: With dead ends: 29766 [2021-12-21 14:17:37,720 INFO L226 Difference]: Without dead ends: 18137 [2021-12-21 14:17:37,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:17:37,760 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5079 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5099 SdHoareTripleChecker+Valid, 21350 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:37,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5099 Valid, 21350 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:17:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2021-12-21 14:17:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 13770. [2021-12-21 14:17:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6112928348909656) internal successors, (20689), 12874 states have internal predecessors, (20689), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-21 14:17:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22360 transitions. [2021-12-21 14:17:38,766 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22360 transitions. Word has length 178 [2021-12-21 14:17:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:38,767 INFO L470 AbstractCegarLoop]: Abstraction has 13770 states and 22360 transitions. [2021-12-21 14:17:38,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22360 transitions. [2021-12-21 14:17:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:38,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:38,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:38,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:17:38,776 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-21 14:17:38,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:38,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240301003] [2021-12-21 14:17:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:38,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:38,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:38,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:38,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:38,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240301003] [2021-12-21 14:17:38,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240301003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:38,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:38,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:38,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557025573] [2021-12-21 14:17:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:38,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:38,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:38,947 INFO L87 Difference]: Start difference. First operand 13770 states and 22360 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:44,133 INFO L93 Difference]: Finished difference Result 44541 states and 71783 transitions. [2021-12-21 14:17:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:17:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-21 14:17:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:44,249 INFO L225 Difference]: With dead ends: 44541 [2021-12-21 14:17:44,250 INFO L226 Difference]: Without dead ends: 32912 [2021-12-21 14:17:44,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:17:44,288 INFO L933 BasicCegarLoop]: 4928 mSDtfsCounter, 5520 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 22692 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:44,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5539 Valid, 22692 Invalid, 3089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:17:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2021-12-21 14:17:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 25108. [2021-12-21 14:17:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25108 states, 23282 states have (on average 1.587020015462589) internal successors, (36949), 23348 states have internal predecessors, (36949), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-21 14:17:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25108 states to 25108 states and 40482 transitions. [2021-12-21 14:17:46,139 INFO L78 Accepts]: Start accepts. Automaton has 25108 states and 40482 transitions. Word has length 178 [2021-12-21 14:17:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:46,140 INFO L470 AbstractCegarLoop]: Abstraction has 25108 states and 40482 transitions. [2021-12-21 14:17:46,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:17:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 25108 states and 40482 transitions. [2021-12-21 14:17:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 14:17:46,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:46,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:17:46,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:17:46,155 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-21 14:17:46,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:46,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872303257] [2021-12-21 14:17:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:46,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:46,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 14:17:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 14:17:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 14:17:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:17:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:46,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:46,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872303257] [2021-12-21 14:17:46,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872303257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:46,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:46,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:46,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596833380] [2021-12-21 14:17:46,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:46,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:46,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:46,305 INFO L87 Difference]: Start difference. First operand 25108 states and 40482 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)