./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8 --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 b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:43:43,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:43:43,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:43:43,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:43:43,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:43:43,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:43:43,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:43:43,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:43:43,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:43:43,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:43:43,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:43:43,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:43:43,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:43:43,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:43:43,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:43:43,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:43:43,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:43:43,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:43:43,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:43:43,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:43:43,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:43:43,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:43:43,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:43:43,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:43:43,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:43:43,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:43:43,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:43:43,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:43:43,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:43:43,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:43:43,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:43:43,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:43:43,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:43:43,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:43:43,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:43:43,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:43:43,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:43:43,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:43:43,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:43:43,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:43:43,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:43:43,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:43:43,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:43:43,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:43:43,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:43:43,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:43:43,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:43:43,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:43:43,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:43:43,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:43:43,810 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:43:43,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:43:43,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:43:43,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:43:43,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:43:43,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:43:43,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:43:43,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:43:43,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:43:43,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:43:43,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:43:43,813 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:43:43,814 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 [2022-12-13 15:43:43,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:43:43,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:43:43,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:43:43,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:43:43,995 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:43:43,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-12-13 15:43:46,522 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:43:46,944 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:43:46,944 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-12-13 15:43:46,976 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/data/23803d0ae/1af1d74634454a048d3c5c40ccce38b5/FLAG12055932a [2022-12-13 15:43:47,102 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/data/23803d0ae/1af1d74634454a048d3c5c40ccce38b5 [2022-12-13 15:43:47,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:43:47,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:43:47,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:43:47,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:43:47,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:43:47,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:43:47" (1/1) ... [2022-12-13 15:43:47,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bb31b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:47, skipping insertion in model container [2022-12-13 15:43:47,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:43:47" (1/1) ... [2022-12-13 15:43:47,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:43:47,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:43:48,571 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[380323,380336] [2022-12-13 15:43:48,590 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[383339,383352] [2022-12-13 15:43:48,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:43:48,817 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:43:49,589 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[380323,380336] [2022-12-13 15:43:49,593 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[383339,383352] [2022-12-13 15:43:49,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:43:49,652 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:43:49,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49 WrapperNode [2022-12-13 15:43:49,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:43:49,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:43:49,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:43:49,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:43:49,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:49,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:49,976 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-12-13 15:43:49,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:43:49,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:43:49,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:43:49,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:43:49,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:49,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,190 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:43:50,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:43:50,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:43:50,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:43:50,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (1/1) ... [2022-12-13 15:43:50,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:43:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:43:50,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:43:50,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bada1c5-ecc3-48ff-b856-8b03969ea21c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:43:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:43:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 15:43:50,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 15:43:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 15:43:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 15:43:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 15:43:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 15:43:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-13 15:43:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-13 15:43:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 15:43:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 15:43:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 15:43:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 15:43:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 15:43:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 15:43:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:43:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:43:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:43:50,405 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:43:50,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:43:55,823 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:43:55,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:43:55,849 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-12-13 15:43:55,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:43:55 BoogieIcfgContainer [2022-12-13 15:43:55,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:43:55,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:43:55,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:43:55,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:43:55,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:43:47" (1/3) ... [2022-12-13 15:43:55,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1991046c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:43:55, skipping insertion in model container [2022-12-13 15:43:55,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:49" (2/3) ... [2022-12-13 15:43:55,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1991046c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:43:55, skipping insertion in model container [2022-12-13 15:43:55,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:43:55" (3/3) ... [2022-12-13 15:43:55,861 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-2.c [2022-12-13 15:43:55,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:43:55,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:43:55,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:43:55,959 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36d1b1e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:43:55,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 15:43:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 15:43:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:43:56,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:43:56,011 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] [2022-12-13 15:43:56,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:43:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-12-13 15:43:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:56,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119870101] [2022-12-13 15:43:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:56,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:43:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:43:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:56,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:43:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:43:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:43:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:56,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:56,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119870101] [2022-12-13 15:43:56,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119870101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:56,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:56,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:43:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389335721] [2022-12-13 15:43:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:56,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:43:56,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:43:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:43:56,431 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:43:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:43:57,792 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-12-13 15:43:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:43:57,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:43:57,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:43:57,811 INFO L225 Difference]: With dead ends: 5096 [2022-12-13 15:43:57,811 INFO L226 Difference]: Without dead ends: 2539 [2022-12-13 15:43:57,818 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 [2022-12-13 15:43:57,820 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 825 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 16720 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:43:57,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 16720 Invalid, 860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:43:57,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-12-13 15:43:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-12-13 15:43:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 15:43:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-12-13 15:43:57,920 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-12-13 15:43:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:43:57,920 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-12-13 15:43:57,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:43:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-12-13 15:43:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:43:57,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:43:57,924 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] [2022-12-13 15:43:57,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:43:57,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:43:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-12-13 15:43:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:57,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455734249] [2022-12-13 15:43:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:43:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:43:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:43:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:43:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:43:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:58,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:58,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455734249] [2022-12-13 15:43:58,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455734249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:58,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:58,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:43:58,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983163355] [2022-12-13 15:43:58,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:58,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:43:58,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:58,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:43:58,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:43:58,138 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:00,346 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-12-13 15:44:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:44:00,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:00,358 INFO L225 Difference]: With dead ends: 3244 [2022-12-13 15:44:00,358 INFO L226 Difference]: Without dead ends: 2952 [2022-12-13 15:44:00,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:44:00,361 INFO L413 NwaCegarLoop]: 4251 mSDtfsCounter, 5189 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5205 SdHoareTripleChecker+Valid, 16918 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:00,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5205 Valid, 16918 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 15:44:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-12-13 15:44:00,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-12-13 15:44:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-13 15:44:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-12-13 15:44:00,431 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-12-13 15:44:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:00,431 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-12-13 15:44:00,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-12-13 15:44:00,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:00,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:00,433 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] [2022-12-13 15:44:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:44:00,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-12-13 15:44:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:00,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919372692] [2022-12-13 15:44:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:00,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:00,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:00,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:00,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:00,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919372692] [2022-12-13 15:44:00,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919372692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:00,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:00,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:00,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460845454] [2022-12-13 15:44:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:00,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:00,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:00,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:00,648 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:03,050 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-12-13 15:44:03,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:44:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:03,062 INFO L225 Difference]: With dead ends: 3972 [2022-12-13 15:44:03,062 INFO L226 Difference]: Without dead ends: 3377 [2022-12-13 15:44:03,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:44:03,066 INFO L413 NwaCegarLoop]: 4423 mSDtfsCounter, 5218 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5234 SdHoareTripleChecker+Valid, 21826 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:03,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5234 Valid, 21826 Invalid, 2870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 15:44:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-12-13 15:44:03,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-12-13 15:44:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-12-13 15:44:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-12-13 15:44:03,197 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-12-13 15:44:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:03,197 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-12-13 15:44:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-12-13 15:44:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:03,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:03,200 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] [2022-12-13 15:44:03,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:44:03,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:03,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-12-13 15:44:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:03,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578665739] [2022-12-13 15:44:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:03,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:03,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578665739] [2022-12-13 15:44:03,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578665739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:03,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:03,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406199874] [2022-12-13 15:44:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:03,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:03,421 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:06,048 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-12-13 15:44:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:44:06,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:06,059 INFO L225 Difference]: With dead ends: 5044 [2022-12-13 15:44:06,059 INFO L226 Difference]: Without dead ends: 4167 [2022-12-13 15:44:06,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:44:06,063 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5212 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5228 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:06,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5228 Valid, 21824 Invalid, 2851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 15:44:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-12-13 15:44:06,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-12-13 15:44:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-12-13 15:44:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-12-13 15:44:06,204 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-12-13 15:44:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:06,205 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-12-13 15:44:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-12-13 15:44:06,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:06,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:06,207 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] [2022-12-13 15:44:06,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:44:06,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-12-13 15:44:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:06,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949379646] [2022-12-13 15:44:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:06,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:06,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949379646] [2022-12-13 15:44:06,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949379646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:06,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:06,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:06,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747962721] [2022-12-13 15:44:06,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:06,388 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:08,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:08,870 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-12-13 15:44:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:44:08,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:08,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:08,884 INFO L225 Difference]: With dead ends: 7114 [2022-12-13 15:44:08,884 INFO L226 Difference]: Without dead ends: 5669 [2022-12-13 15:44:08,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:44:08,888 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5211 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5227 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:08,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5227 Valid, 21824 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 15:44:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-12-13 15:44:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-12-13 15:44:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-12-13 15:44:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-12-13 15:44:09,089 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-12-13 15:44:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:09,089 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-12-13 15:44:09,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-12-13 15:44:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:09,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:09,091 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] [2022-12-13 15:44:09,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:44:09,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-12-13 15:44:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:09,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225317405] [2022-12-13 15:44:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225317405] [2022-12-13 15:44:09,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225317405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:09,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:09,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154311895] [2022-12-13 15:44:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:09,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:09,245 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:12,211 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-12-13 15:44:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:44:12,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:12,240 INFO L225 Difference]: With dead ends: 11253 [2022-12-13 15:44:12,240 INFO L226 Difference]: Without dead ends: 8671 [2022-12-13 15:44:12,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:44:12,249 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5210 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:12,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5226 Valid, 21824 Invalid, 2825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 15:44:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-12-13 15:44:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-12-13 15:44:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-12-13 15:44:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-12-13 15:44:12,683 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-12-13 15:44:12,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:12,684 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-12-13 15:44:12,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-12-13 15:44:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:12,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:12,689 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] [2022-12-13 15:44:12,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:44:12,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:12,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-12-13 15:44:12,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:12,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901715203] [2022-12-13 15:44:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:12,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:12,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901715203] [2022-12-13 15:44:12,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901715203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:12,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:12,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:12,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308205083] [2022-12-13 15:44:12,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:12,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:12,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:12,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:12,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:12,868 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:16,114 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-12-13 15:44:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:44:16,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:16,145 INFO L225 Difference]: With dead ends: 19532 [2022-12-13 15:44:16,145 INFO L226 Difference]: Without dead ends: 14669 [2022-12-13 15:44:16,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:44:16,157 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 5291 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 21123 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:16,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5307 Valid, 21123 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 15:44:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-12-13 15:44:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-12-13 15:44:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-12-13 15:44:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-12-13 15:44:16,961 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-12-13 15:44:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:16,961 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-12-13 15:44:16,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:16,962 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-12-13 15:44:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:16,966 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:16,967 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] [2022-12-13 15:44:16,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:44:16,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:16,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:16,967 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-12-13 15:44:16,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:16,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045434677] [2022-12-13 15:44:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:17,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:17,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:17,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:17,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045434677] [2022-12-13 15:44:17,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045434677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:17,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:17,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:17,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408289942] [2022-12-13 15:44:17,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:17,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:17,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:17,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:17,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:17,136 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:19,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:19,861 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-12-13 15:44:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:44:19,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:19,911 INFO L225 Difference]: With dead ends: 24276 [2022-12-13 15:44:19,911 INFO L226 Difference]: Without dead ends: 14836 [2022-12-13 15:44:19,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:44:19,936 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4998 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 16692 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:19,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5015 Valid, 16692 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:44:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-12-13 15:44:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-12-13 15:44:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-12-13 15:44:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-12-13 15:44:20,797 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-12-13 15:44:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:20,797 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-12-13 15:44:20,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-12-13 15:44:20,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:20,803 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:20,803 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] [2022-12-13 15:44:20,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:44:20,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-12-13 15:44:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:20,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329439660] [2022-12-13 15:44:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:20,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:20,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:20,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329439660] [2022-12-13 15:44:20,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329439660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:20,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:20,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:20,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645872231] [2022-12-13 15:44:20,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:20,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:20,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:20,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:20,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:20,995 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:25,965 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-12-13 15:44:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:44:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:26,022 INFO L225 Difference]: With dead ends: 36057 [2022-12-13 15:44:26,023 INFO L226 Difference]: Without dead ends: 26617 [2022-12-13 15:44:26,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:44:26,042 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:26,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 21824 Invalid, 2774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 15:44:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-12-13 15:44:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-12-13 15:44:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-12-13 15:44:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-12-13 15:44:27,815 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-12-13 15:44:27,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:27,815 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-12-13 15:44:27,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-12-13 15:44:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:27,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:27,823 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] [2022-12-13 15:44:27,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:44:27,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-12-13 15:44:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:27,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646143429] [2022-12-13 15:44:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:27,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:27,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:27,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:27,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:27,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:27,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646143429] [2022-12-13 15:44:27,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646143429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:27,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:27,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:27,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655271366] [2022-12-13 15:44:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:27,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:27,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:27,966 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:35,248 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-12-13 15:44:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:44:35,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:35,362 INFO L225 Difference]: With dead ends: 69177 [2022-12-13 15:44:35,362 INFO L226 Difference]: Without dead ends: 50519 [2022-12-13 15:44:35,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:44:35,397 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5206 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:35,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 21824 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 15:44:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-12-13 15:44:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-12-13 15:44:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-12-13 15:44:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-12-13 15:44:39,294 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-12-13 15:44:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:39,294 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-12-13 15:44:39,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-12-13 15:44:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:44:39,306 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:39,306 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] [2022-12-13 15:44:39,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:44:39,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:39,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-12-13 15:44:39,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:39,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79211153] [2022-12-13 15:44:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:39,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:39,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:44:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:39,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:44:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:44:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:44:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:44:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:44:39,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:39,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79211153] [2022-12-13 15:44:39,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79211153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:39,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:39,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825082094] [2022-12-13 15:44:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:39,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:39,441 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:44:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:58,420 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-12-13 15:44:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:44:58,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:44:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:58,720 INFO L225 Difference]: With dead ends: 151030 [2022-12-13 15:44:58,721 INFO L226 Difference]: Without dead ends: 113875 [2022-12-13 15:44:58,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:44:58,800 INFO L413 NwaCegarLoop]: 4418 mSDtfsCounter, 5283 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5298 SdHoareTripleChecker+Valid, 21810 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:58,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5298 Valid, 21810 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 15:44:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2022-12-13 15:45:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2022-12-13 15:45:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-12-13 15:45:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2022-12-13 15:45:06,882 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2022-12-13 15:45:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:06,883 INFO L495 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2022-12-13 15:45:06,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:45:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2022-12-13 15:45:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:45:06,923 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:06,924 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] [2022-12-13 15:45:06,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:45:06,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2022-12-13 15:45:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011911940] [2022-12-13 15:45:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:06,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:45:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:45:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:45:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:45:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:45:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:45:07,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:07,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011911940] [2022-12-13 15:45:07,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011911940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:45:07,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:45:07,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:45:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442993306] [2022-12-13 15:45:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:45:07,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:45:07,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:07,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:45:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:45:07,083 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:45:42,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:45:42,982 INFO L93 Difference]: Finished difference Result 290934 states and 478781 transitions. [2022-12-13 15:45:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:45:42,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:45:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:43,728 INFO L225 Difference]: With dead ends: 290934 [2022-12-13 15:45:43,728 INFO L226 Difference]: Without dead ends: 218193 [2022-12-13 15:45:43,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:45:43,942 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5491 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5517 SdHoareTripleChecker+Valid, 21814 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:43,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5517 Valid, 21814 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 15:45:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218193 states. [2022-12-13 15:46:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218193 to 147200. [2022-12-13 15:46:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147200 states, 134879 states have (on average 1.558811972212131) internal successors, (210251), 135394 states have internal predecessors, (210251), 8729 states have call successors, (8729), 3079 states have call predecessors, (8729), 3590 states have return successors, (28922), 9238 states have call predecessors, (28922), 8727 states have call successors, (28922) [2022-12-13 15:46:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147200 states to 147200 states and 247902 transitions. [2022-12-13 15:46:01,417 INFO L78 Accepts]: Start accepts. Automaton has 147200 states and 247902 transitions. Word has length 146 [2022-12-13 15:46:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:46:01,417 INFO L495 AbstractCegarLoop]: Abstraction has 147200 states and 247902 transitions. [2022-12-13 15:46:01,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:46:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 147200 states and 247902 transitions. [2022-12-13 15:46:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:46:01,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:46:01,462 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] [2022-12-13 15:46:01,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:46:01,462 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:46:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:46:01,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2022-12-13 15:46:01,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:46:01,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659008475] [2022-12-13 15:46:01,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:01,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:46:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:46:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:46:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:46:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:46:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:46:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:46:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:46:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659008475] [2022-12-13 15:46:01,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659008475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:46:01,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:46:01,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:46:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213072702] [2022-12-13 15:46:01,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:46:01,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:46:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:46:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:46:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:46:01,592 INFO L87 Difference]: Start difference. First operand 147200 states and 247902 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:47:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:47:13,800 INFO L93 Difference]: Finished difference Result 569589 states and 963651 transitions. [2022-12-13 15:47:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:47:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:47:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:47:15,432 INFO L225 Difference]: With dead ends: 569589 [2022-12-13 15:47:15,433 INFO L226 Difference]: Without dead ends: 424527 [2022-12-13 15:47:15,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:47:15,888 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5451 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5477 SdHoareTripleChecker+Valid, 21814 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:47:15,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5477 Valid, 21814 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 15:47:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424527 states. [2022-12-13 15:47:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424527 to 291585. [2022-12-13 15:47:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291585 states, 267488 states have (on average 1.5583689735614308) internal successors, (416845), 268515 states have internal predecessors, (416845), 16921 states have call successors, (16921), 6151 states have call predecessors, (16921), 7174 states have return successors, (76992), 17942 states have call predecessors, (76992), 16919 states have call successors, (76992) [2022-12-13 15:47:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291585 states to 291585 states and 510758 transitions. [2022-12-13 15:47:52,510 INFO L78 Accepts]: Start accepts. Automaton has 291585 states and 510758 transitions. Word has length 146 [2022-12-13 15:47:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:47:52,511 INFO L495 AbstractCegarLoop]: Abstraction has 291585 states and 510758 transitions. [2022-12-13 15:47:52,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:47:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 291585 states and 510758 transitions. [2022-12-13 15:47:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:47:52,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:47:52,602 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] [2022-12-13 15:47:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:47:52,602 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:47:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:47:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash -177302660, now seen corresponding path program 1 times [2022-12-13 15:47:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:47:52,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016240727] [2022-12-13 15:47:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:52,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:47:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:47:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:47:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:47:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:47:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:47:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:47:52,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:47:52,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016240727] [2022-12-13 15:47:52,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016240727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:47:52,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:47:52,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:47:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526930459] [2022-12-13 15:47:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:47:52,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:47:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:47:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:47:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:47:52,734 INFO L87 Difference]: Start difference. First operand 291585 states and 510758 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:50:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:50:13,552 INFO L93 Difference]: Finished difference Result 1117428 states and 1970777 transitions. [2022-12-13 15:50:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:50:13,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:50:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:50:17,402 INFO L225 Difference]: With dead ends: 1117428 [2022-12-13 15:50:17,403 INFO L226 Difference]: Without dead ends: 827981 [2022-12-13 15:50:18,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:50:18,761 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 5317 mSDsluCounter, 16863 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5332 SdHoareTripleChecker+Valid, 21119 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:50:18,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5332 Valid, 21119 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 15:50:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827981 states. [2022-12-13 15:51:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827981 to 579842. [2022-12-13 15:51:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579842 states, 532705 states have (on average 1.5591049455139336) internal successors, (830543), 534756 states have internal predecessors, (830543), 32793 states have call successors, (32793), 12295 states have call predecessors, (32793), 14342 states have return successors, (211986), 34838 states have call predecessors, (211986), 32791 states have call successors, (211986) [2022-12-13 15:51:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579842 states to 579842 states and 1075322 transitions. [2022-12-13 15:51:34,741 INFO L78 Accepts]: Start accepts. Automaton has 579842 states and 1075322 transitions. Word has length 146 [2022-12-13 15:51:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:51:34,741 INFO L495 AbstractCegarLoop]: Abstraction has 579842 states and 1075322 transitions. [2022-12-13 15:51:34,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:51:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 579842 states and 1075322 transitions. [2022-12-13 15:51:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:51:35,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:51:35,012 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] [2022-12-13 15:51:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:51:35,012 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:51:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:51:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash 294053690, now seen corresponding path program 1 times [2022-12-13 15:51:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:51:35,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898770747] [2022-12-13 15:51:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:51:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:51:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:51:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:51:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:51:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:51:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:51:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:51:35,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:51:35,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898770747] [2022-12-13 15:51:35,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898770747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:51:35,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:51:35,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:51:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987175536] [2022-12-13 15:51:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:51:35,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:51:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:51:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:51:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:51:35,209 INFO L87 Difference]: Start difference. First operand 579842 states and 1075322 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:53:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:53:35,837 INFO L93 Difference]: Finished difference Result 1323732 states and 2584431 transitions. [2022-12-13 15:53:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:53:35,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 15:53:35,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:53:39,650 INFO L225 Difference]: With dead ends: 1323732 [2022-12-13 15:53:39,650 INFO L226 Difference]: Without dead ends: 746028 [2022-12-13 15:53:41,974 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 [2022-12-13 15:53:41,975 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4873 mSDsluCounter, 16605 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4890 SdHoareTripleChecker+Valid, 20812 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:53:41,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4890 Valid, 20812 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:53:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746028 states. [2022-12-13 15:55:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746028 to 579842. [2022-12-13 15:55:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579842 states, 532705 states have (on average 1.5552585389662197) internal successors, (828494), 534756 states have internal predecessors, (828494), 32793 states have call successors, (32793), 12295 states have call predecessors, (32793), 14342 states have return successors, (211986), 34838 states have call predecessors, (211986), 32791 states have call successors, (211986) [2022-12-13 15:55:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579842 states to 579842 states and 1073273 transitions. [2022-12-13 15:55:07,043 INFO L78 Accepts]: Start accepts. Automaton has 579842 states and 1073273 transitions. Word has length 146 [2022-12-13 15:55:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:55:07,043 INFO L495 AbstractCegarLoop]: Abstraction has 579842 states and 1073273 transitions. [2022-12-13 15:55:07,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:55:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 579842 states and 1073273 transitions. [2022-12-13 15:55:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 15:55:07,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:55:07,243 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] [2022-12-13 15:55:07,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:55:07,243 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:55:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1353309252, now seen corresponding path program 1 times [2022-12-13 15:55:07,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:07,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261395962] [2022-12-13 15:55:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:07,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:55:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 15:55:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:55:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:55:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 15:55:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:55:07,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:07,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261395962] [2022-12-13 15:55:07,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261395962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:07,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:07,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:55:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646554806] [2022-12-13 15:55:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:07,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:07,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:07,385 INFO L87 Difference]: Start difference. First operand 579842 states and 1073273 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)