./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_label48+token_ring.11.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 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:05:50,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:05:50,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:05:50,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:05:50,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:05:50,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:05:50,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:05:50,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:05:50,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:05:50,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:05:50,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:05:50,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:05:50,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:05:50,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:05:50,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:05:50,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:05:50,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:05:50,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:05:50,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:05:50,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:05:50,672 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:05:50,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:05:50,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:05:50,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:05:50,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:05:50,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:05:50,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:05:50,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:05:50,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:05:50,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:05:50,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:05:50,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:05:50,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:05:50,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:05:50,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:05:50,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:05:50,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:05:50,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:05:50,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:05:50,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:05:50,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:05:50,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:05:50,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:05:50,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:05:50,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:05:50,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:05:50,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:05:50,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:05:50,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:05:50,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:05:50,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:05:50,724 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:05:50,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:05:50,725 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:05:50,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:05:50,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:05:50,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:05:50,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:05:50,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:05:50,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:05:50,726 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:05:50,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:05:50,726 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:05:50,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:05:50,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:05:50,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:05:50,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:05:50,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:05:50,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:05:50,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:05:50,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:05:50,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:05:50,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:05:50,728 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:05:50,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:05:50,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:05:50,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 [2022-07-21 07:05:51,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:05:51,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:05:51,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:05:51,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:05:51,037 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:05:51,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2022-07-21 07:05:51,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323967799/7833806d91694bf2a2ed67e3193cd3cd/FLAGa062ed42b [2022-07-21 07:05:51,856 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:05:51,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2022-07-21 07:05:51,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323967799/7833806d91694bf2a2ed67e3193cd3cd/FLAGa062ed42b [2022-07-21 07:05:52,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323967799/7833806d91694bf2a2ed67e3193cd3cd [2022-07-21 07:05:52,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:05:52,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:05:52,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:05:52,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:05:52,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:05:52,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:05:52" (1/1) ... [2022-07-21 07:05:52,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb2a417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:52, skipping insertion in model container [2022-07-21 07:05:52,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:05:52" (1/1) ... [2022-07-21 07:05:52,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:05:52,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:05:53,479 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_label48+token_ring.11.cil-2.c[375709,375722] [2022-07-21 07:05:53,501 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_label48+token_ring.11.cil-2.c[383339,383352] [2022-07-21 07:05:53,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:05:53,725 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:05:54,310 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_label48+token_ring.11.cil-2.c[375709,375722] [2022-07-21 07:05:54,318 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_label48+token_ring.11.cil-2.c[383339,383352] [2022-07-21 07:05:54,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:05:54,386 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:05:54,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54 WrapperNode [2022-07-21 07:05:54,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:05:54,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:05:54,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:05:54,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:05:54,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:54,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:54,873 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2022-07-21 07:05:54,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:05:54,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:05:54,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:05:54,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:05:54,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:54,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:54,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:54,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:55,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:55,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:55,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:55,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:05:55,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:05:55,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:05:55,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:05:55,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (1/1) ... [2022-07-21 07:05:55,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:05:55,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:05:55,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 07:05:55,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 07:05:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:05:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 07:05:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 07:05:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 07:05:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 07:05:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 07:05:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 07:05:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 07:05:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 07:05:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 07:05:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 07:05:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 07:05:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 07:05:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:05:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:05:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:05:55,634 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:05:55,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:06:00,304 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:06:00,324 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:06:00,324 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-21 07:06:00,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:06:00 BoogieIcfgContainer [2022-07-21 07:06:00,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:06:00,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:06:00,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:06:00,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:06:00,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:05:52" (1/3) ... [2022-07-21 07:06:00,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7072e089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:06:00, skipping insertion in model container [2022-07-21 07:06:00,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:05:54" (2/3) ... [2022-07-21 07:06:00,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7072e089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:06:00, skipping insertion in model container [2022-07-21 07:06:00,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:06:00" (3/3) ... [2022-07-21 07:06:00,333 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.11.cil-2.c [2022-07-21 07:06:00,343 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:06:00,343 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:06:00,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:06:00,404 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40773bfc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e0ad14b [2022-07-21 07:06:00,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:06:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-21 07:06:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:00,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:00,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:00,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-07-21 07:06:00,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:00,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840624048] [2022-07-21 07:06:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:00,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:00,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:00,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840624048] [2022-07-21 07:06:00,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840624048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:00,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:00,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:06:00,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212754112] [2022-07-21 07:06:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:00,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:06:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:06:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:06:00,813 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-21 07:06:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:02,180 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2022-07-21 07:06:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:06:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:02,205 INFO L225 Difference]: With dead ends: 5199 [2022-07-21 07:06:02,205 INFO L226 Difference]: Without dead ends: 2604 [2022-07-21 07:06:02,215 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:06:02,220 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17076 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:02,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 17076 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 07:06:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-07-21 07:06:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2022-07-21 07:06:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-21 07:06:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-07-21 07:06:02,440 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-07-21 07:06:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:02,441 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-07-21 07:06:02,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-21 07:06:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-07-21 07:06:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:02,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:02,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:02,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:06:02,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:02,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-07-21 07:06:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:02,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854060494] [2022-07-21 07:06:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:02,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:02,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854060494] [2022-07-21 07:06:02,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854060494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:02,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:02,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:06:02,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221780747] [2022-07-21 07:06:02,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:02,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:06:02,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:06:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:06:02,596 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-21 07:06:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:04,934 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2022-07-21 07:06:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:06:04,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:04,946 INFO L225 Difference]: With dead ends: 3417 [2022-07-21 07:06:04,946 INFO L226 Difference]: Without dead ends: 3084 [2022-07-21 07:06:04,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:06:04,950 INFO L413 NwaCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12755 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17371 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:04,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 17371 Invalid, 1981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 07:06:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-07-21 07:06:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2022-07-21 07:06:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-21 07:06:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2022-07-21 07:06:05,022 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2022-07-21 07:06:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:05,022 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2022-07-21 07:06:05,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-21 07:06:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2022-07-21 07:06:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:05,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:05,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:05,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:06:05,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:05,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-07-21 07:06:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:05,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749720477] [2022-07-21 07:06:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:05,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:05,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:05,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:05,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749720477] [2022-07-21 07:06:05,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749720477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:05,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:05,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216066781] [2022-07-21 07:06:05,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:05,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:05,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:05,207 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:08,037 INFO L93 Difference]: Finished difference Result 4265 states and 7403 transitions. [2022-07-21 07:06:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:08,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:08,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:08,050 INFO L225 Difference]: With dead ends: 4265 [2022-07-21 07:06:08,063 INFO L226 Difference]: Without dead ends: 3582 [2022-07-21 07:06:08,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:06:08,073 INFO L413 NwaCegarLoop]: 4895 mSDtfsCounter, 5420 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 22471 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:08,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 22471 Invalid, 2978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 07:06:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-07-21 07:06:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3148. [2022-07-21 07:06:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7775236850702385) internal successors, (5441), 3065 states have internal predecessors, (5441), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-21 07:06:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5576 transitions. [2022-07-21 07:06:08,247 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5576 transitions. Word has length 167 [2022-07-21 07:06:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:08,248 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5576 transitions. [2022-07-21 07:06:08,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5576 transitions. [2022-07-21 07:06:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:08,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:08,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:08,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:06:08,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2022-07-21 07:06:08,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:08,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329662646] [2022-07-21 07:06:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:08,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:08,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329662646] [2022-07-21 07:06:08,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329662646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:08,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:08,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420252545] [2022-07-21 07:06:08,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:08,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:08,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:08,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:08,415 INFO L87 Difference]: Start difference. First operand 3148 states and 5576 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:11,199 INFO L93 Difference]: Finished difference Result 5515 states and 9398 transitions. [2022-07-21 07:06:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:11,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:11,217 INFO L225 Difference]: With dead ends: 5515 [2022-07-21 07:06:11,217 INFO L226 Difference]: Without dead ends: 4507 [2022-07-21 07:06:11,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:06:11,223 INFO L413 NwaCegarLoop]: 4887 mSDtfsCounter, 5417 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5435 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:11,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5435 Valid, 22463 Invalid, 2983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 07:06:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-07-21 07:06:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3799. [2022-07-21 07:06:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3658 states have (on average 1.7419354838709677) internal successors, (6372), 3664 states have internal predecessors, (6372), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-21 07:06:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6595 transitions. [2022-07-21 07:06:11,358 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6595 transitions. Word has length 167 [2022-07-21 07:06:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:11,359 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 6595 transitions. [2022-07-21 07:06:11,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6595 transitions. [2022-07-21 07:06:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:11,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:11,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:06:11,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:11,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2022-07-21 07:06:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:11,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606134549] [2022-07-21 07:06:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:11,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:11,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:11,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606134549] [2022-07-21 07:06:11,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606134549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:11,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:11,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:11,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098533670] [2022-07-21 07:06:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:11,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:11,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:11,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:11,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:11,517 INFO L87 Difference]: Start difference. First operand 3799 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:14,260 INFO L93 Difference]: Finished difference Result 7918 states and 13209 transitions. [2022-07-21 07:06:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:14,280 INFO L225 Difference]: With dead ends: 7918 [2022-07-21 07:06:14,280 INFO L226 Difference]: Without dead ends: 6259 [2022-07-21 07:06:14,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:06:14,285 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5413 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5431 SdHoareTripleChecker+Valid, 22459 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:14,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5431 Valid, 22459 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 07:06:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2022-07-21 07:06:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5102. [2022-07-21 07:06:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 4853 states have (on average 1.6966824644549763) internal successors, (8234), 4863 states have internal predecessors, (8234), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-21 07:06:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8639 transitions. [2022-07-21 07:06:14,498 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8639 transitions. Word has length 167 [2022-07-21 07:06:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:14,499 INFO L495 AbstractCegarLoop]: Abstraction has 5102 states and 8639 transitions. [2022-07-21 07:06:14,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:14,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8639 transitions. [2022-07-21 07:06:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:14,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:14,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:06:14,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2022-07-21 07:06:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:14,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991271490] [2022-07-21 07:06:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:14,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:14,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:14,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:14,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991271490] [2022-07-21 07:06:14,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991271490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:14,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:14,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339754045] [2022-07-21 07:06:14,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:14,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:14,642 INFO L87 Difference]: Start difference. First operand 5102 states and 8639 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:17,520 INFO L93 Difference]: Finished difference Result 12723 states and 20847 transitions. [2022-07-21 07:06:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:17,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:17,563 INFO L225 Difference]: With dead ends: 12723 [2022-07-21 07:06:17,564 INFO L226 Difference]: Without dead ends: 9761 [2022-07-21 07:06:17,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:06:17,576 INFO L413 NwaCegarLoop]: 4879 mSDtfsCounter, 5409 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:17,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22455 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 07:06:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2022-07-21 07:06:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7713. [2022-07-21 07:06:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7248 states have (on average 1.650662251655629) internal successors, (11964), 7266 states have internal predecessors, (11964), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-21 07:06:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12751 transitions. [2022-07-21 07:06:17,875 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12751 transitions. Word has length 167 [2022-07-21 07:06:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:17,876 INFO L495 AbstractCegarLoop]: Abstraction has 7713 states and 12751 transitions. [2022-07-21 07:06:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12751 transitions. [2022-07-21 07:06:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:17,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:17,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:17,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:06:17,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2022-07-21 07:06:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:17,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661033326] [2022-07-21 07:06:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:17,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:18,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:18,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661033326] [2022-07-21 07:06:18,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661033326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:18,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:18,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695018227] [2022-07-21 07:06:18,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:18,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:18,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:18,005 INFO L87 Difference]: Start difference. First operand 7713 states and 12751 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:21,301 INFO L93 Difference]: Finished difference Result 22332 states and 36181 transitions. [2022-07-21 07:06:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:21,349 INFO L225 Difference]: With dead ends: 22332 [2022-07-21 07:06:21,350 INFO L226 Difference]: Without dead ends: 16759 [2022-07-21 07:06:21,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:06:21,371 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22449 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:21,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22449 Invalid, 2968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 07:06:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2022-07-21 07:06:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12948. [2022-07-21 07:06:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.613310098746992) internal successors, (19442), 12085 states have internal predecessors, (19442), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-21 07:06:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21047 transitions. [2022-07-21 07:06:22,256 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21047 transitions. Word has length 167 [2022-07-21 07:06:22,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:22,257 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21047 transitions. [2022-07-21 07:06:22,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21047 transitions. [2022-07-21 07:06:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:22,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:22,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:22,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:06:22,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:22,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2022-07-21 07:06:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:22,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713284710] [2022-07-21 07:06:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:22,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:22,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:22,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:22,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713284710] [2022-07-21 07:06:22,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713284710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:22,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:22,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:22,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577137486] [2022-07-21 07:06:22,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:22,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:22,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:22,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:22,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:22,466 INFO L87 Difference]: Start difference. First operand 12948 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:24,644 INFO L93 Difference]: Finished difference Result 27774 states and 45096 transitions. [2022-07-21 07:06:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:06:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:24,688 INFO L225 Difference]: With dead ends: 27774 [2022-07-21 07:06:24,688 INFO L226 Difference]: Without dead ends: 16966 [2022-07-21 07:06:24,715 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:06:24,716 INFO L413 NwaCegarLoop]: 4542 mSDtfsCounter, 4998 mSDsluCounter, 16699 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:24,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21241 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 07:06:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16966 states. [2022-07-21 07:06:25,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16966 to 12948. [2022-07-21 07:06:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.610571736785329) internal successors, (19409), 12085 states have internal predecessors, (19409), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-21 07:06:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21014 transitions. [2022-07-21 07:06:25,406 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21014 transitions. Word has length 167 [2022-07-21 07:06:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:25,406 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21014 transitions. [2022-07-21 07:06:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21014 transitions. [2022-07-21 07:06:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:25,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:25,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:25,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:06:25,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2022-07-21 07:06:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:25,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537736772] [2022-07-21 07:06:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:25,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:25,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:25,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:25,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537736772] [2022-07-21 07:06:25,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537736772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:25,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:25,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080636208] [2022-07-21 07:06:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:25,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:25,520 INFO L87 Difference]: Start difference. First operand 12948 states and 21014 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:29,719 INFO L93 Difference]: Finished difference Result 41484 states and 66747 transitions. [2022-07-21 07:06:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:29,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:29,800 INFO L225 Difference]: With dead ends: 41484 [2022-07-21 07:06:29,800 INFO L226 Difference]: Without dead ends: 30676 [2022-07-21 07:06:29,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:06:29,830 INFO L413 NwaCegarLoop]: 4859 mSDtfsCounter, 5396 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 22435 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:29,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 22435 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 07:06:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2022-07-21 07:06:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 23513. [2022-07-21 07:06:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 21752 states have (on average 1.5849117322545054) internal successors, (34475), 21818 states have internal predecessors, (34475), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-21 07:06:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 37878 transitions. [2022-07-21 07:06:31,058 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 37878 transitions. Word has length 167 [2022-07-21 07:06:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:31,058 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 37878 transitions. [2022-07-21 07:06:31,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 37878 transitions. [2022-07-21 07:06:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:31,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:31,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:31,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:06:31,071 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:31,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2022-07-21 07:06:31,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:31,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172361686] [2022-07-21 07:06:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:31,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:31,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172361686] [2022-07-21 07:06:31,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172361686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:31,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:31,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489052919] [2022-07-21 07:06:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:31,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:31,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:31,195 INFO L87 Difference]: Start difference. First operand 23513 states and 37878 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:36,848 INFO L93 Difference]: Finished difference Result 79923 states and 128881 transitions. [2022-07-21 07:06:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:36,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:37,162 INFO L225 Difference]: With dead ends: 79923 [2022-07-21 07:06:37,162 INFO L226 Difference]: Without dead ends: 58550 [2022-07-21 07:06:37,267 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:06:37,267 INFO L413 NwaCegarLoop]: 4854 mSDtfsCounter, 5395 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 22430 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:37,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 22430 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 07:06:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58550 states. [2022-07-21 07:06:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58550 to 44702. [2022-07-21 07:06:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44702 states, 41213 states have (on average 1.5697231456093952) internal successors, (64693), 41343 states have internal predecessors, (64693), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-21 07:06:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44702 states to 44702 states and 72178 transitions. [2022-07-21 07:06:40,122 INFO L78 Accepts]: Start accepts. Automaton has 44702 states and 72178 transitions. Word has length 167 [2022-07-21 07:06:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:40,123 INFO L495 AbstractCegarLoop]: Abstraction has 44702 states and 72178 transitions. [2022-07-21 07:06:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 44702 states and 72178 transitions. [2022-07-21 07:06:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:40,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:40,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:40,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:06:40,139 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:40,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2022-07-21 07:06:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:40,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65396837] [2022-07-21 07:06:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:40,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:40,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65396837] [2022-07-21 07:06:40,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65396837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:40,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:40,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:40,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976357994] [2022-07-21 07:06:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:40,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:40,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:40,250 INFO L87 Difference]: Start difference. First operand 44702 states and 72178 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:06:50,601 INFO L93 Difference]: Finished difference Result 156798 states and 254991 transitions. [2022-07-21 07:06:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:06:50,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:06:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:06:50,973 INFO L225 Difference]: With dead ends: 156798 [2022-07-21 07:06:50,973 INFO L226 Difference]: Without dead ends: 114236 [2022-07-21 07:06:51,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:06:51,093 INFO L413 NwaCegarLoop]: 4849 mSDtfsCounter, 5394 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 22425 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 07:06:51,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5412 Valid, 22425 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 07:06:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114236 states. [2022-07-21 07:06:56,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114236 to 87207. [2022-07-21 07:06:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5613740001495104) internal successors, (125319), 80520 states have internal predecessors, (125319), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-21 07:06:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142426 transitions. [2022-07-21 07:06:56,976 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142426 transitions. Word has length 167 [2022-07-21 07:06:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:06:56,977 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142426 transitions. [2022-07-21 07:06:56,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:06:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142426 transitions. [2022-07-21 07:06:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:06:57,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:06:57,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:06:57,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:06:57,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:06:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:06:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2022-07-21 07:06:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:06:57,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29983759] [2022-07-21 07:06:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:06:57,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:06:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:06:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:06:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:57,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:06:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:06:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:06:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:06:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:06:57,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:06:57,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29983759] [2022-07-21 07:06:57,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29983759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:06:57,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:06:57,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:06:57,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004403457] [2022-07-21 07:06:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:06:57,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:06:57,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:06:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:06:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:06:57,122 INFO L87 Difference]: Start difference. First operand 87207 states and 142426 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:07:07,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:07,591 INFO L93 Difference]: Finished difference Result 200924 states and 334667 transitions. [2022-07-21 07:07:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:07:07,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 07:07:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:08,096 INFO L225 Difference]: With dead ends: 200924 [2022-07-21 07:07:08,096 INFO L226 Difference]: Without dead ends: 115857 [2022-07-21 07:07:08,495 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:07:08,496 INFO L413 NwaCegarLoop]: 4529 mSDtfsCounter, 5153 mSDsluCounter, 12560 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 17089 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:08,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 17089 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 07:07:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115857 states. [2022-07-21 07:07:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115857 to 87207. [2022-07-21 07:07:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5581719867434154) internal successors, (125062), 80520 states have internal predecessors, (125062), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-21 07:07:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142169 transitions. [2022-07-21 07:07:15,181 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142169 transitions. Word has length 167 [2022-07-21 07:07:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:15,181 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142169 transitions. [2022-07-21 07:07:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 07:07:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142169 transitions. [2022-07-21 07:07:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 07:07:15,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:15,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:07:15,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2022-07-21 07:07:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:15,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204527283] [2022-07-21 07:07:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 07:07:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 07:07:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 07:07:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 07:07:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:15,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204527283] [2022-07-21 07:07:15,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204527283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:15,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:15,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:15,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68447912] [2022-07-21 07:07:15,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:15,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:15,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:15,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:15,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:15,339 INFO L87 Difference]: Start difference. First operand 87207 states and 142169 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)