./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0 --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 64bit --witnessprinter.graph.data.programhash 8dda3f7c080a6e7302d861accabde0bee64e4cb5e7a0fb77650fdd775ecd7779 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:55:08,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:55:08,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:55:08,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:55:08,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:55:08,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:55:08,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:55:08,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:55:08,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:55:08,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:55:08,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:55:08,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:55:08,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:55:08,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:55:08,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:55:08,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:55:08,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:55:08,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:55:08,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:55:08,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:55:08,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:55:08,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:55:08,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:55:08,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:55:08,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:55:08,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:55:08,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:55:08,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:55:08,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:55:08,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:55:08,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:55:08,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:55:08,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:55:08,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:55:08,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:55:08,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:55:08,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:55:08,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:55:08,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:55:08,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:55:08,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:55:08,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 14:55:09,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:55:09,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:55:09,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:55:09,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:55:09,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:55:09,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:55:09,036 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:55:09,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:55:09,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:55:09,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:55:09,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:55:09,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:55:09,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:55:09,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:55:09,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:55:09,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:55:09,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:55:09,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:55:09,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:55:09,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:55:09,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:55:09,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:55:09,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:55:09,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:55:09,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:55:09,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:55:09,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:55:09,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:55:09,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:55:09,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dda3f7c080a6e7302d861accabde0bee64e4cb5e7a0fb77650fdd775ecd7779 [2021-11-22 14:55:09,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:55:09,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:55:09,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:55:09,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:55:09,371 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:55:09,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-22 14:55:09,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/data/72a5d8a18/3eca3bcd55364280b8b153f3294d4f83/FLAGed7225912 [2021-11-22 14:55:10,523 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:55:10,525 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-22 14:55:10,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/data/72a5d8a18/3eca3bcd55364280b8b153f3294d4f83/FLAGed7225912 [2021-11-22 14:55:10,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/data/72a5d8a18/3eca3bcd55364280b8b153f3294d4f83 [2021-11-22 14:55:10,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:55:10,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:55:10,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:55:10,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:55:10,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:55:10,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:55:10" (1/1) ... [2021-11-22 14:55:10,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f991d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:10, skipping insertion in model container [2021-11-22 14:55:10,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:55:10" (1/1) ... [2021-11-22 14:55:10,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:55:11,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:55:14,208 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[334651,334664] [2021-11-22 14:55:14,211 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[334820,334833] [2021-11-22 14:55:14,212 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[334987,335000] [2021-11-22 14:55:14,213 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335155,335168] [2021-11-22 14:55:14,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:55:14,314 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:55:14,638 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[334651,334664] [2021-11-22 14:55:14,639 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[334820,334833] [2021-11-22 14:55:14,639 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[334987,335000] [2021-11-22 14:55:14,640 WARN L230 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_bf72e754-cd35-4a06-9f0f-c61696ee8df4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335155,335168] [2021-11-22 14:55:14,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:55:14,894 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:55:14,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14 WrapperNode [2021-11-22 14:55:14,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:55:14,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:55:14,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:55:14,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:55:14,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:15,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:15,963 INFO L137 Inliner]: procedures = 455, calls = 1830, calls flagged for inlining = 935, calls inlined = 3499, statements flattened = 32789 [2021-11-22 14:55:15,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:55:15,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:55:15,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:55:15,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:55:15,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:15,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:16,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:16,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:16,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:17,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:17,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:17,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:55:17,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:55:17,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:55:17,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:55:17,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (1/1) ... [2021-11-22 14:55:17,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:55:17,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:55:17,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:55:17,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf72e754-cd35-4a06-9f0f-c61696ee8df4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:55:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:55:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 14:55:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 14:55:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:55:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:55:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:55:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 14:55:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:55:17,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:55:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 14:55:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 14:55:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:55:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 14:55:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 14:55:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:55:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:55:18,571 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:55:18,572 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:55:31,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-22 14:55:31,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-22 14:55:31,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-22 14:55:31,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-22 14:55:31,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-22 14:55:31,641 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-22 14:55:31,643 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:55:31,708 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:55:31,708 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 14:55:31,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:55:31 BoogieIcfgContainer [2021-11-22 14:55:31,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:55:31,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:55:31,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:55:31,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:55:31,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:55:10" (1/3) ... [2021-11-22 14:55:31,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdb9f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:55:31, skipping insertion in model container [2021-11-22 14:55:31,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:55:14" (2/3) ... [2021-11-22 14:55:31,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdb9f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:55:31, skipping insertion in model container [2021-11-22 14:55:31,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:55:31" (3/3) ... [2021-11-22 14:55:31,727 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-22 14:55:31,732 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:55:31,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2021-11-22 14:55:31,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:55:31,819 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:55:31,820 INFO L340 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2021-11-22 14:55:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 6528 states, 6450 states have (on average 1.2770542635658915) internal successors, (8237), 6527 states have internal predecessors, (8237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 14:55:31,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:31,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:31,952 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1629210075, now seen corresponding path program 1 times [2021-11-22 14:55:31,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:31,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127509537] [2021-11-22 14:55:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:31,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:32,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:32,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127509537] [2021-11-22 14:55:32,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127509537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:32,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:32,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:32,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734763320] [2021-11-22 14:55:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:32,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:55:32,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:55:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:32,750 INFO L87 Difference]: Start difference. First operand has 6528 states, 6450 states have (on average 1.2770542635658915) internal successors, (8237), 6527 states have internal predecessors, (8237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:33,506 INFO L93 Difference]: Finished difference Result 19223 states and 24255 transitions. [2021-11-22 14:55:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:55:33,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-22 14:55:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:33,611 INFO L225 Difference]: With dead ends: 19223 [2021-11-22 14:55:33,611 INFO L226 Difference]: Without dead ends: 12463 [2021-11-22 14:55:33,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:33,637 INFO L933 BasicCegarLoop]: 8091 mSDtfsCounter, 7823 mSDsluCounter, 8050 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7823 SdHoareTripleChecker+Valid, 16141 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:33,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7823 Valid, 16141 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12463 states. [2021-11-22 14:55:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12463 to 12355. [2021-11-22 14:55:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12355 states, 12277 states have (on average 1.236132605685428) internal successors, (15176), 12354 states have internal predecessors, (15176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12355 states to 12355 states and 15176 transitions. [2021-11-22 14:55:34,169 INFO L78 Accepts]: Start accepts. Automaton has 12355 states and 15176 transitions. Word has length 46 [2021-11-22 14:55:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:34,171 INFO L470 AbstractCegarLoop]: Abstraction has 12355 states and 15176 transitions. [2021-11-22 14:55:34,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12355 states and 15176 transitions. [2021-11-22 14:55:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 14:55:34,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:34,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:34,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:55:34,186 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash -387216318, now seen corresponding path program 1 times [2021-11-22 14:55:34,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:34,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133678466] [2021-11-22 14:55:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:34,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:34,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133678466] [2021-11-22 14:55:34,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133678466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:34,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:34,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:34,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244432630] [2021-11-22 14:55:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:34,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:55:34,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:55:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:34,426 INFO L87 Difference]: Start difference. First operand 12355 states and 15176 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:35,401 INFO L93 Difference]: Finished difference Result 34457 states and 42422 transitions. [2021-11-22 14:55:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:55:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-22 14:55:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:35,562 INFO L225 Difference]: With dead ends: 34457 [2021-11-22 14:55:35,562 INFO L226 Difference]: Without dead ends: 22187 [2021-11-22 14:55:35,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:35,601 INFO L933 BasicCegarLoop]: 7718 mSDtfsCounter, 7125 mSDsluCounter, 6733 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7125 SdHoareTripleChecker+Valid, 14451 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:35,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7125 Valid, 14451 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22187 states. [2021-11-22 14:55:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22187 to 21338. [2021-11-22 14:55:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21338 states, 21260 states have (on average 1.2428974600188147) internal successors, (26424), 21337 states have internal predecessors, (26424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21338 states to 21338 states and 26424 transitions. [2021-11-22 14:55:36,670 INFO L78 Accepts]: Start accepts. Automaton has 21338 states and 26424 transitions. Word has length 50 [2021-11-22 14:55:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:36,670 INFO L470 AbstractCegarLoop]: Abstraction has 21338 states and 26424 transitions. [2021-11-22 14:55:36,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 21338 states and 26424 transitions. [2021-11-22 14:55:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 14:55:36,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:36,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:36,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:55:36,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1372268656, now seen corresponding path program 1 times [2021-11-22 14:55:36,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:36,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600196652] [2021-11-22 14:55:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:36,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:36,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:36,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600196652] [2021-11-22 14:55:36,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600196652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:36,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:36,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:36,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562494894] [2021-11-22 14:55:36,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:36,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:55:36,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:55:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:36,875 INFO L87 Difference]: Start difference. First operand 21338 states and 26424 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:38,122 INFO L93 Difference]: Finished difference Result 56980 states and 70536 transitions. [2021-11-22 14:55:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:55:38,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-22 14:55:38,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:38,220 INFO L225 Difference]: With dead ends: 56980 [2021-11-22 14:55:38,220 INFO L226 Difference]: Without dead ends: 35727 [2021-11-22 14:55:38,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:38,267 INFO L933 BasicCegarLoop]: 7722 mSDtfsCounter, 5478 mSDsluCounter, 7634 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5478 SdHoareTripleChecker+Valid, 15356 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:38,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5478 Valid, 15356 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35727 states. [2021-11-22 14:55:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35727 to 34048. [2021-11-22 14:55:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34048 states, 33970 states have (on average 1.2451574919046218) internal successors, (42298), 34047 states have internal predecessors, (42298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34048 states to 34048 states and 42298 transitions. [2021-11-22 14:55:39,800 INFO L78 Accepts]: Start accepts. Automaton has 34048 states and 42298 transitions. Word has length 54 [2021-11-22 14:55:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:39,803 INFO L470 AbstractCegarLoop]: Abstraction has 34048 states and 42298 transitions. [2021-11-22 14:55:39,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:39,805 INFO L276 IsEmpty]: Start isEmpty. Operand 34048 states and 42298 transitions. [2021-11-22 14:55:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 14:55:39,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:39,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:39,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:55:39,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:39,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:39,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2120807590, now seen corresponding path program 1 times [2021-11-22 14:55:39,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:39,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325969245] [2021-11-22 14:55:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:39,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:39,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:39,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325969245] [2021-11-22 14:55:39,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325969245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:39,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:39,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:39,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928092454] [2021-11-22 14:55:39,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:39,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:55:39,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:55:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:39,961 INFO L87 Difference]: Start difference. First operand 34048 states and 42298 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:40,944 INFO L93 Difference]: Finished difference Result 55782 states and 69342 transitions. [2021-11-22 14:55:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:55:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-22 14:55:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:40,992 INFO L225 Difference]: With dead ends: 55782 [2021-11-22 14:55:40,992 INFO L226 Difference]: Without dead ends: 21819 [2021-11-22 14:55:41,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:41,037 INFO L933 BasicCegarLoop]: 10350 mSDtfsCounter, 2824 mSDsluCounter, 7621 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 17971 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:41,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2824 Valid, 17971 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21819 states. [2021-11-22 14:55:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21819 to 21697. [2021-11-22 14:55:41,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21697 states, 21619 states have (on average 1.2471437161755863) internal successors, (26962), 21696 states have internal predecessors, (26962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21697 states to 21697 states and 26962 transitions. [2021-11-22 14:55:41,725 INFO L78 Accepts]: Start accepts. Automaton has 21697 states and 26962 transitions. Word has length 54 [2021-11-22 14:55:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:41,726 INFO L470 AbstractCegarLoop]: Abstraction has 21697 states and 26962 transitions. [2021-11-22 14:55:41,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 21697 states and 26962 transitions. [2021-11-22 14:55:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 14:55:41,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:41,729 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:41,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:55:41,729 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:41,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1173331780, now seen corresponding path program 1 times [2021-11-22 14:55:41,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:41,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163872956] [2021-11-22 14:55:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:41,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:41,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:41,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163872956] [2021-11-22 14:55:41,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163872956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:41,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:41,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:41,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537901367] [2021-11-22 14:55:41,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:41,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:55:41,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:55:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:41,885 INFO L87 Difference]: Start difference. First operand 21697 states and 26962 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:43,353 INFO L93 Difference]: Finished difference Result 64520 states and 80251 transitions. [2021-11-22 14:55:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:55:43,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 14:55:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:43,455 INFO L225 Difference]: With dead ends: 64520 [2021-11-22 14:55:43,455 INFO L226 Difference]: Without dead ends: 42961 [2021-11-22 14:55:43,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:55:43,496 INFO L933 BasicCegarLoop]: 7788 mSDtfsCounter, 7552 mSDsluCounter, 7662 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7552 SdHoareTripleChecker+Valid, 15450 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:43,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7552 Valid, 15450 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:55:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42961 states. [2021-11-22 14:55:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42961 to 42839. [2021-11-22 14:55:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42839 states, 42761 states have (on average 1.248053132527303) internal successors, (53368), 42838 states have internal predecessors, (53368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42839 states to 42839 states and 53368 transitions. [2021-11-22 14:55:44,703 INFO L78 Accepts]: Start accepts. Automaton has 42839 states and 53368 transitions. Word has length 72 [2021-11-22 14:55:44,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:44,703 INFO L470 AbstractCegarLoop]: Abstraction has 42839 states and 53368 transitions. [2021-11-22 14:55:44,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:44,704 INFO L276 IsEmpty]: Start isEmpty. Operand 42839 states and 53368 transitions. [2021-11-22 14:55:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 14:55:44,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:44,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:44,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:55:44,706 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1760137794, now seen corresponding path program 1 times [2021-11-22 14:55:44,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:44,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038776363] [2021-11-22 14:55:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:44,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:55:44,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:44,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038776363] [2021-11-22 14:55:44,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038776363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:44,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:44,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:44,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924022120] [2021-11-22 14:55:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:44,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:55:44,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:55:44,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:55:44,952 INFO L87 Difference]: Start difference. First operand 42839 states and 53368 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:46,498 INFO L93 Difference]: Finished difference Result 42839 states and 53368 transitions. [2021-11-22 14:55:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:55:46,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 14:55:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:46,596 INFO L225 Difference]: With dead ends: 42839 [2021-11-22 14:55:46,597 INFO L226 Difference]: Without dead ends: 42835 [2021-11-22 14:55:46,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:55:46,611 INFO L933 BasicCegarLoop]: 7724 mSDtfsCounter, 7666 mSDsluCounter, 7660 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7666 SdHoareTripleChecker+Valid, 15384 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:46,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7666 Valid, 15384 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:46,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42835 states. [2021-11-22 14:55:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42835 to 42835. [2021-11-22 14:55:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42835 states, 42759 states have (on average 1.24801796113099) internal successors, (53364), 42834 states have internal predecessors, (53364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42835 states to 42835 states and 53364 transitions. [2021-11-22 14:55:47,851 INFO L78 Accepts]: Start accepts. Automaton has 42835 states and 53364 transitions. Word has length 72 [2021-11-22 14:55:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:47,853 INFO L470 AbstractCegarLoop]: Abstraction has 42835 states and 53364 transitions. [2021-11-22 14:55:47,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 42835 states and 53364 transitions. [2021-11-22 14:55:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 14:55:47,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:47,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:47,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:55:47,858 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash 724835841, now seen corresponding path program 1 times [2021-11-22 14:55:47,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:47,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038743542] [2021-11-22 14:55:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:47,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:55:48,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038743542] [2021-11-22 14:55:48,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038743542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:48,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:48,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:48,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881550021] [2021-11-22 14:55:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:48,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:55:48,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:55:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:55:48,084 INFO L87 Difference]: Start difference. First operand 42835 states and 53364 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:49,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:49,217 INFO L93 Difference]: Finished difference Result 42835 states and 53364 transitions. [2021-11-22 14:55:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:55:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-22 14:55:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:49,331 INFO L225 Difference]: With dead ends: 42835 [2021-11-22 14:55:49,332 INFO L226 Difference]: Without dead ends: 42831 [2021-11-22 14:55:49,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:55:49,348 INFO L933 BasicCegarLoop]: 7720 mSDtfsCounter, 7658 mSDsluCounter, 7658 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7658 SdHoareTripleChecker+Valid, 15378 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:49,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7658 Valid, 15378 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42831 states. [2021-11-22 14:55:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42831 to 42831. [2021-11-22 14:55:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42831 states, 42757 states have (on average 1.247982786444325) internal successors, (53360), 42830 states have internal predecessors, (53360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42831 states to 42831 states and 53360 transitions. [2021-11-22 14:55:50,668 INFO L78 Accepts]: Start accepts. Automaton has 42831 states and 53360 transitions. Word has length 74 [2021-11-22 14:55:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:50,668 INFO L470 AbstractCegarLoop]: Abstraction has 42831 states and 53360 transitions. [2021-11-22 14:55:50,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 42831 states and 53360 transitions. [2021-11-22 14:55:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-22 14:55:50,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:50,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:50,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:55:50,671 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 782682820, now seen corresponding path program 1 times [2021-11-22 14:55:50,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:50,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175110069] [2021-11-22 14:55:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:50,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:55:50,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:50,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175110069] [2021-11-22 14:55:50,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175110069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:50,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:50,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:50,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697682794] [2021-11-22 14:55:50,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:50,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:55:50,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:50,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:55:50,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:55:50,891 INFO L87 Difference]: Start difference. First operand 42831 states and 53360 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:52,132 INFO L93 Difference]: Finished difference Result 42831 states and 53360 transitions. [2021-11-22 14:55:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:55:52,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-22 14:55:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:52,224 INFO L225 Difference]: With dead ends: 42831 [2021-11-22 14:55:52,225 INFO L226 Difference]: Without dead ends: 42827 [2021-11-22 14:55:52,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:55:52,240 INFO L933 BasicCegarLoop]: 7716 mSDtfsCounter, 7652 mSDsluCounter, 7656 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7652 SdHoareTripleChecker+Valid, 15372 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:52,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7652 Valid, 15372 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42827 states. [2021-11-22 14:55:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42827 to 42827. [2021-11-22 14:55:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42827 states, 42755 states have (on average 1.247947608466846) internal successors, (53356), 42826 states have internal predecessors, (53356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42827 states to 42827 states and 53356 transitions. [2021-11-22 14:55:53,599 INFO L78 Accepts]: Start accepts. Automaton has 42827 states and 53356 transitions. Word has length 76 [2021-11-22 14:55:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:53,599 INFO L470 AbstractCegarLoop]: Abstraction has 42827 states and 53356 transitions. [2021-11-22 14:55:53,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 42827 states and 53356 transitions. [2021-11-22 14:55:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 14:55:53,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:53,602 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:53,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:55:53,602 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash 539055111, now seen corresponding path program 1 times [2021-11-22 14:55:53,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:53,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686807067] [2021-11-22 14:55:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:53,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:55:54,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:54,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686807067] [2021-11-22 14:55:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686807067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:54,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:54,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:54,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90489303] [2021-11-22 14:55:54,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:54,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:55:54,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:55:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:55:54,006 INFO L87 Difference]: Start difference. First operand 42827 states and 53356 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:55,291 INFO L93 Difference]: Finished difference Result 42827 states and 53356 transitions. [2021-11-22 14:55:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:55:55,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 14:55:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:55,368 INFO L225 Difference]: With dead ends: 42827 [2021-11-22 14:55:55,368 INFO L226 Difference]: Without dead ends: 42823 [2021-11-22 14:55:55,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:55:55,382 INFO L933 BasicCegarLoop]: 7712 mSDtfsCounter, 7646 mSDsluCounter, 7654 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7646 SdHoareTripleChecker+Valid, 15366 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:55,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7646 Valid, 15366 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42823 states. [2021-11-22 14:55:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42823 to 42823. [2021-11-22 14:55:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42823 states, 42753 states have (on average 1.2479124271980913) internal successors, (53352), 42822 states have internal predecessors, (53352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42823 states to 42823 states and 53352 transitions. [2021-11-22 14:55:56,769 INFO L78 Accepts]: Start accepts. Automaton has 42823 states and 53352 transitions. Word has length 78 [2021-11-22 14:55:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:56,769 INFO L470 AbstractCegarLoop]: Abstraction has 42823 states and 53352 transitions. [2021-11-22 14:55:56,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 42823 states and 53352 transitions. [2021-11-22 14:55:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 14:55:56,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:56,772 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:56,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:55:56,772 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:55:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1658938934, now seen corresponding path program 1 times [2021-11-22 14:55:56,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:56,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381740507] [2021-11-22 14:55:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:56,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:55:56,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:56,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381740507] [2021-11-22 14:55:56,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381740507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:56,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:56,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:55:56,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719236660] [2021-11-22 14:55:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:56,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:55:56,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:55:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:55:56,950 INFO L87 Difference]: Start difference. First operand 42823 states and 53352 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:55:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:58,658 INFO L93 Difference]: Finished difference Result 42823 states and 53352 transitions. [2021-11-22 14:55:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:55:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-22 14:55:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:58,719 INFO L225 Difference]: With dead ends: 42823 [2021-11-22 14:55:58,719 INFO L226 Difference]: Without dead ends: 42819 [2021-11-22 14:55:58,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:55:58,729 INFO L933 BasicCegarLoop]: 7708 mSDtfsCounter, 7640 mSDsluCounter, 7652 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7640 SdHoareTripleChecker+Valid, 15360 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:58,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7640 Valid, 15360 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:55:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42819 states. [2021-11-22 14:56:00,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42819 to 42819. [2021-11-22 14:56:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42819 states, 42751 states have (on average 1.247877242637599) internal successors, (53348), 42818 states have internal predecessors, (53348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42819 states to 42819 states and 53348 transitions. [2021-11-22 14:56:00,131 INFO L78 Accepts]: Start accepts. Automaton has 42819 states and 53348 transitions. Word has length 80 [2021-11-22 14:56:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:00,132 INFO L470 AbstractCegarLoop]: Abstraction has 42819 states and 53348 transitions. [2021-11-22 14:56:00,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 42819 states and 53348 transitions. [2021-11-22 14:56:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 14:56:00,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:00,133 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:00,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:56:00,134 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:56:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash -807306227, now seen corresponding path program 1 times [2021-11-22 14:56:00,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:00,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640500965] [2021-11-22 14:56:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:00,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:56:00,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:00,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640500965] [2021-11-22 14:56:00,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640500965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:00,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:00,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:56:00,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994101593] [2021-11-22 14:56:00,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:00,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:56:00,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:00,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:56:00,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:56:00,295 INFO L87 Difference]: Start difference. First operand 42819 states and 53348 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:02,387 INFO L93 Difference]: Finished difference Result 42819 states and 53348 transitions. [2021-11-22 14:56:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:56:02,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-22 14:56:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:02,465 INFO L225 Difference]: With dead ends: 42819 [2021-11-22 14:56:02,465 INFO L226 Difference]: Without dead ends: 42815 [2021-11-22 14:56:02,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:56:02,474 INFO L933 BasicCegarLoop]: 7704 mSDtfsCounter, 7634 mSDsluCounter, 7650 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7634 SdHoareTripleChecker+Valid, 15354 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:02,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7634 Valid, 15354 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:56:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42815 states. [2021-11-22 14:56:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42815 to 42815. [2021-11-22 14:56:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42815 states, 42749 states have (on average 1.2478420547849072) internal successors, (53344), 42814 states have internal predecessors, (53344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42815 states to 42815 states and 53344 transitions. [2021-11-22 14:56:03,992 INFO L78 Accepts]: Start accepts. Automaton has 42815 states and 53344 transitions. Word has length 82 [2021-11-22 14:56:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:03,992 INFO L470 AbstractCegarLoop]: Abstraction has 42815 states and 53344 transitions. [2021-11-22 14:56:03,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 42815 states and 53344 transitions. [2021-11-22 14:56:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 14:56:03,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:03,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:03,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:56:03,995 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:56:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1567939280, now seen corresponding path program 1 times [2021-11-22 14:56:03,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:03,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879757885] [2021-11-22 14:56:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:03,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:56:04,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:04,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879757885] [2021-11-22 14:56:04,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879757885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:04,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:04,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:56:04,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342406976] [2021-11-22 14:56:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:04,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:56:04,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:56:04,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:56:04,145 INFO L87 Difference]: Start difference. First operand 42815 states and 53344 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:06,370 INFO L93 Difference]: Finished difference Result 42815 states and 53344 transitions. [2021-11-22 14:56:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:56:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-22 14:56:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:06,433 INFO L225 Difference]: With dead ends: 42815 [2021-11-22 14:56:06,433 INFO L226 Difference]: Without dead ends: 42811 [2021-11-22 14:56:06,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:56:06,441 INFO L933 BasicCegarLoop]: 7648 mSDtfsCounter, 1765 mSDsluCounter, 13349 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 20997 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:06,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1765 Valid, 20997 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 14:56:06,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42811 states. [2021-11-22 14:56:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42811 to 42811. [2021-11-22 14:56:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42811 states, 42747 states have (on average 1.2478068636395536) internal successors, (53340), 42810 states have internal predecessors, (53340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42811 states to 42811 states and 53340 transitions. [2021-11-22 14:56:07,956 INFO L78 Accepts]: Start accepts. Automaton has 42811 states and 53340 transitions. Word has length 84 [2021-11-22 14:56:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 42811 states and 53340 transitions. [2021-11-22 14:56:07,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 42811 states and 53340 transitions. [2021-11-22 14:56:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 14:56:07,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:07,959 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:07,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:56:07,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-22 14:56:07,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash 730155563, now seen corresponding path program 1 times [2021-11-22 14:56:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:07,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662749301] [2021-11-22 14:56:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:07,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:08,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:08,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662749301] [2021-11-22 14:56:08,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662749301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:08,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:08,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:56:08,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901977408] [2021-11-22 14:56:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:08,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:56:08,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:56:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:56:08,070 INFO L87 Difference]: Start difference. First operand 42811 states and 53340 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)