./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY --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 14116a47f3f4a2a033e7a89d50301476fe518641457365dd95d98c606e6851b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:12:11,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:12:11,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:12:11,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:12:11,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:12:11,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:12:11,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:12:11,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:12:11,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:12:11,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:12:11,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:12:11,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:12:11,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:12:11,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:12:11,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:12:11,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:12:11,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:12:11,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:12:11,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:12:12,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:12:12,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:12:12,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:12:12,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:12:12,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:12:12,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:12:12,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:12:12,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:12:12,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:12:12,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:12:12,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:12:12,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:12:12,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:12:12,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:12:12,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:12:12,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:12:12,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:12:12,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:12:12,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:12:12,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:12:12,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:12:12,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:12:12,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:12:12,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:12:12,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:12:12,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:12:12,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:12:12,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:12:12,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:12:12,108 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:12:12,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:12:12,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:12:12,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:12:12,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:12:12,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:12:12,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:12:12,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:12:12,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:12:12,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:12:12,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:12:12,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:12:12,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:12:12,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:12:12,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:12:12,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:12:12,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:12:12,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:12:12,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:12:12,114 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:12:12,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:12:12,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:12:12,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:12:12,116 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14116a47f3f4a2a033e7a89d50301476fe518641457365dd95d98c606e6851b5 [2021-11-07 08:12:12,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:12:12,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:12:12,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:12:12,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:12:12,564 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:12:12,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-07 08:12:12,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/data/5d2e50a06/ecb5f03f21e04cb7b1d05c58780736a7/FLAG3aea4587e [2021-11-07 08:12:14,031 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:12:14,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-07 08:12:14,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/data/5d2e50a06/ecb5f03f21e04cb7b1d05c58780736a7/FLAG3aea4587e [2021-11-07 08:12:14,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/data/5d2e50a06/ecb5f03f21e04cb7b1d05c58780736a7 [2021-11-07 08:12:14,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:12:14,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:12:14,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:12:14,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:12:14,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:12:14,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:12:14" (1/1) ... [2021-11-07 08:12:14,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1383e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:14, skipping insertion in model container [2021-11-07 08:12:14,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:12:14" (1/1) ... [2021-11-07 08:12:14,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:12:14,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:12:20,966 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485804,485817] [2021-11-07 08:12:20,969 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485973,485986] [2021-11-07 08:12:20,970 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486140,486153] [2021-11-07 08:12:20,971 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486308,486321] [2021-11-07 08:12:21,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:12:21,067 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:12:21,803 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485804,485817] [2021-11-07 08:12:21,805 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485973,485986] [2021-11-07 08:12:21,806 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486140,486153] [2021-11-07 08:12:21,807 WARN L228 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_252b8daf-9ce6-40d4-85a1-129acdb5f03a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486308,486321] [2021-11-07 08:12:21,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:12:22,203 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:12:22,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22 WrapperNode [2021-11-07 08:12:22,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:12:22,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:12:22,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:12:22,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:12:22,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:22,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:24,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:12:24,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:12:24,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:12:24,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:12:24,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:24,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:25,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:25,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:27,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:27,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:27,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:28,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:12:28,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:12:28,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:12:28,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:12:28,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (1/1) ... [2021-11-07 08:12:28,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:12:28,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:12:28,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:12:28,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252b8daf-9ce6-40d4-85a1-129acdb5f03a/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:12:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2021-11-07 08:12:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2021-11-07 08:12:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:12:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:12:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:12:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:12:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:12:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:12:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2021-11-07 08:12:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2021-11-07 08:12:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2021-11-07 08:12:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2021-11-07 08:12:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:12:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2021-11-07 08:12:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2021-11-07 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2021-11-07 08:12:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2021-11-07 08:12:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2021-11-07 08:12:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2021-11-07 08:12:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:12:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:12:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 08:12:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 08:12:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:12:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 08:12:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 08:12:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2021-11-07 08:12:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2021-11-07 08:12:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:12:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2021-11-07 08:12:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2021-11-07 08:12:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:12:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 08:13:08,977 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 08:13:08,977 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 08:13:08,978 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 08:13:08,979 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 08:13:08,982 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 08:13:08,983 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 08:13:09,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:13:09,091 INFO L299 CfgBuilder]: Removed 9691 assume(true) statements. [2021-11-07 08:13:09,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:13:09 BoogieIcfgContainer [2021-11-07 08:13:09,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:13:09,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:13:09,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:13:09,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:13:09,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:12:14" (1/3) ... [2021-11-07 08:13:09,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f119233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:13:09, skipping insertion in model container [2021-11-07 08:13:09,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:12:22" (2/3) ... [2021-11-07 08:13:09,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f119233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:13:09, skipping insertion in model container [2021-11-07 08:13:09,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:13:09" (3/3) ... [2021-11-07 08:13:09,115 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-07 08:13:09,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:13:09,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-07 08:13:09,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:13:09,235 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 [2021-11-07 08:13:09,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-07 08:13:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 9382 states, 9215 states have (on average 1.3274009766684753) internal successors, (12232), 9256 states have internal predecessors, (12232), 115 states have call successors, (115), 10 states have call predecessors, (115), 10 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-07 08:13:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 08:13:09,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:09,577 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:09,578 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash -623206203, now seen corresponding path program 1 times [2021-11-07 08:13:09,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:09,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379496055] [2021-11-07 08:13:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:09,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:13:10,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:10,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379496055] [2021-11-07 08:13:10,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379496055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:10,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:10,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:10,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273430517] [2021-11-07 08:13:10,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:13:10,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:13:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:13:10,725 INFO L87 Difference]: Start difference. First operand has 9382 states, 9215 states have (on average 1.3274009766684753) internal successors, (12232), 9256 states have internal predecessors, (12232), 115 states have call successors, (115), 10 states have call predecessors, (115), 10 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-07 08:13:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:12,893 INFO L93 Difference]: Finished difference Result 27424 states and 36462 transitions. [2021-11-07 08:13:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:13:12,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2021-11-07 08:13:12,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:13,041 INFO L225 Difference]: With dead ends: 27424 [2021-11-07 08:13:13,041 INFO L226 Difference]: Without dead ends: 17758 [2021-11-07 08:13:13,083 INFO L786 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 [2021-11-07 08:13:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17758 states. [2021-11-07 08:13:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17758 to 17758. [2021-11-07 08:13:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17758 states, 17466 states have (on average 1.2856979274018092) internal successors, (22456), 17507 states have internal predecessors, (22456), 230 states have call successors, (230), 20 states have call predecessors, (230), 20 states have return successors, (230), 230 states have call predecessors, (230), 230 states have call successors, (230) [2021-11-07 08:13:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17758 states to 17758 states and 22916 transitions. [2021-11-07 08:13:14,193 INFO L78 Accepts]: Start accepts. Automaton has 17758 states and 22916 transitions. Word has length 90 [2021-11-07 08:13:14,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:14,197 INFO L470 AbstractCegarLoop]: Abstraction has 17758 states and 22916 transitions. [2021-11-07 08:13:14,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-07 08:13:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 17758 states and 22916 transitions. [2021-11-07 08:13:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:13:14,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:14,216 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:14,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:13:14,217 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -968367872, now seen corresponding path program 1 times [2021-11-07 08:13:14,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:14,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703819935] [2021-11-07 08:13:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:14,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:13:14,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:14,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703819935] [2021-11-07 08:13:14,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703819935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:14,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:14,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:14,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646598570] [2021-11-07 08:13:14,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:13:14,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:13:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:13:14,754 INFO L87 Difference]: Start difference. First operand 17758 states and 22916 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:13:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:17,235 INFO L93 Difference]: Finished difference Result 35318 states and 45614 transitions. [2021-11-07 08:13:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:13:17,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 119 [2021-11-07 08:13:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:17,407 INFO L225 Difference]: With dead ends: 35318 [2021-11-07 08:13:17,407 INFO L226 Difference]: Without dead ends: 26428 [2021-11-07 08:13:17,444 INFO L786 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 [2021-11-07 08:13:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26428 states. [2021-11-07 08:13:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26428 to 26428. [2021-11-07 08:13:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26428 states, 26011 states have (on average 1.2863403944485026) internal successors, (33459), 26052 states have internal predecessors, (33459), 345 states have call successors, (345), 30 states have call predecessors, (345), 30 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2021-11-07 08:13:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26428 states to 26428 states and 34149 transitions. [2021-11-07 08:13:18,598 INFO L78 Accepts]: Start accepts. Automaton has 26428 states and 34149 transitions. Word has length 119 [2021-11-07 08:13:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:18,601 INFO L470 AbstractCegarLoop]: Abstraction has 26428 states and 34149 transitions. [2021-11-07 08:13:18,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:13:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 26428 states and 34149 transitions. [2021-11-07 08:13:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:13:18,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:18,616 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:18,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:13:18,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2046735746, now seen corresponding path program 1 times [2021-11-07 08:13:18,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:18,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212936750] [2021-11-07 08:13:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:18,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:13:19,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:19,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212936750] [2021-11-07 08:13:19,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212936750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:19,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:19,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:19,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369105461] [2021-11-07 08:13:19,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:13:19,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:13:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:13:19,241 INFO L87 Difference]: Start difference. First operand 26428 states and 34149 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:13:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:21,689 INFO L93 Difference]: Finished difference Result 52659 states and 68082 transitions. [2021-11-07 08:13:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:13:21,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 119 [2021-11-07 08:13:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:21,827 INFO L225 Difference]: With dead ends: 52659 [2021-11-07 08:13:21,827 INFO L226 Difference]: Without dead ends: 35099 [2021-11-07 08:13:21,886 INFO L786 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 [2021-11-07 08:13:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35099 states. [2021-11-07 08:13:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35099 to 35099. [2021-11-07 08:13:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35099 states, 34557 states have (on average 1.2866568278496398) internal successors, (44463), 34598 states have internal predecessors, (44463), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35099 states to 35099 states and 45383 transitions. [2021-11-07 08:13:23,299 INFO L78 Accepts]: Start accepts. Automaton has 35099 states and 45383 transitions. Word has length 119 [2021-11-07 08:13:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:23,301 INFO L470 AbstractCegarLoop]: Abstraction has 35099 states and 45383 transitions. [2021-11-07 08:13:23,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:13:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 35099 states and 45383 transitions. [2021-11-07 08:13:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 08:13:23,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:23,307 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:23,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:13:23,308 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:23,311 INFO L85 PathProgramCache]: Analyzing trace with hash 764247360, now seen corresponding path program 1 times [2021-11-07 08:13:23,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:23,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360922793] [2021-11-07 08:13:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:23,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:23,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:23,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360922793] [2021-11-07 08:13:23,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360922793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:23,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:23,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:23,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944554361] [2021-11-07 08:13:23,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:23,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:23,865 INFO L87 Difference]: Start difference. First operand 35099 states and 45383 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-11-07 08:13:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:25,329 INFO L93 Difference]: Finished difference Result 35099 states and 45383 transitions. [2021-11-07 08:13:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 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 120 [2021-11-07 08:13:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:25,439 INFO L225 Difference]: With dead ends: 35099 [2021-11-07 08:13:25,439 INFO L226 Difference]: Without dead ends: 35093 [2021-11-07 08:13:25,447 INFO L786 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 [2021-11-07 08:13:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35093 states. [2021-11-07 08:13:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35093 to 35093. [2021-11-07 08:13:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35093 states, 34554 states have (on average 1.2865948949470394) internal successors, (44457), 34592 states have internal predecessors, (44457), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35093 states to 35093 states and 45377 transitions. [2021-11-07 08:13:26,703 INFO L78 Accepts]: Start accepts. Automaton has 35093 states and 45377 transitions. Word has length 120 [2021-11-07 08:13:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:26,703 INFO L470 AbstractCegarLoop]: Abstraction has 35093 states and 45377 transitions. [2021-11-07 08:13:26,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-11-07 08:13:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 35093 states and 45377 transitions. [2021-11-07 08:13:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 08:13:26,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:26,711 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:26,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:13:26,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2485027, now seen corresponding path program 1 times [2021-11-07 08:13:26,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:26,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840525112] [2021-11-07 08:13:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:26,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:27,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:27,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840525112] [2021-11-07 08:13:27,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840525112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:27,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:27,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:27,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103619005] [2021-11-07 08:13:27,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:27,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:27,523 INFO L87 Difference]: Start difference. First operand 35093 states and 45377 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-07 08:13:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:28,823 INFO L93 Difference]: Finished difference Result 35093 states and 45377 transitions. [2021-11-07 08:13:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:28,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 122 [2021-11-07 08:13:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:28,942 INFO L225 Difference]: With dead ends: 35093 [2021-11-07 08:13:28,942 INFO L226 Difference]: Without dead ends: 35087 [2021-11-07 08:13:28,961 INFO L786 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 [2021-11-07 08:13:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35087 states. [2021-11-07 08:13:30,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35087 to 35087. [2021-11-07 08:13:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35087 states, 34551 states have (on average 1.2865329512893984) internal successors, (44451), 34586 states have internal predecessors, (44451), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35087 states to 35087 states and 45371 transitions. [2021-11-07 08:13:30,394 INFO L78 Accepts]: Start accepts. Automaton has 35087 states and 45371 transitions. Word has length 122 [2021-11-07 08:13:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:30,395 INFO L470 AbstractCegarLoop]: Abstraction has 35087 states and 45371 transitions. [2021-11-07 08:13:30,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-07 08:13:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 35087 states and 45371 transitions. [2021-11-07 08:13:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 08:13:30,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:30,404 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:30,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:13:30,405 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:30,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1906676346, now seen corresponding path program 1 times [2021-11-07 08:13:30,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:30,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100696125] [2021-11-07 08:13:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:30,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:30,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:30,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100696125] [2021-11-07 08:13:30,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100696125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:30,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:30,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:30,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337558909] [2021-11-07 08:13:30,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:30,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:30,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:30,843 INFO L87 Difference]: Start difference. First operand 35087 states and 45371 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-07 08:13:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:32,366 INFO L93 Difference]: Finished difference Result 35087 states and 45371 transitions. [2021-11-07 08:13:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:32,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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 124 [2021-11-07 08:13:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:32,478 INFO L225 Difference]: With dead ends: 35087 [2021-11-07 08:13:32,478 INFO L226 Difference]: Without dead ends: 35081 [2021-11-07 08:13:32,488 INFO L786 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 [2021-11-07 08:13:32,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35081 states. [2021-11-07 08:13:33,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35081 to 35081. [2021-11-07 08:13:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35081 states, 34548 states have (on average 1.2864709968739145) internal successors, (44445), 34580 states have internal predecessors, (44445), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35081 states to 35081 states and 45365 transitions. [2021-11-07 08:13:34,040 INFO L78 Accepts]: Start accepts. Automaton has 35081 states and 45365 transitions. Word has length 124 [2021-11-07 08:13:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:34,040 INFO L470 AbstractCegarLoop]: Abstraction has 35081 states and 45365 transitions. [2021-11-07 08:13:34,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-07 08:13:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 35081 states and 45365 transitions. [2021-11-07 08:13:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 08:13:34,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:34,052 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:34,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:13:34,052 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1635247209, now seen corresponding path program 1 times [2021-11-07 08:13:34,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:34,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960565266] [2021-11-07 08:13:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:34,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:34,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:34,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960565266] [2021-11-07 08:13:34,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960565266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:34,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:34,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:34,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17550557] [2021-11-07 08:13:34,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:34,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:34,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:34,706 INFO L87 Difference]: Start difference. First operand 35081 states and 45365 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-07 08:13:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:35,965 INFO L93 Difference]: Finished difference Result 35081 states and 45365 transitions. [2021-11-07 08:13:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:35,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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 126 [2021-11-07 08:13:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:36,064 INFO L225 Difference]: With dead ends: 35081 [2021-11-07 08:13:36,064 INFO L226 Difference]: Without dead ends: 35075 [2021-11-07 08:13:36,082 INFO L786 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 [2021-11-07 08:13:36,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35075 states. [2021-11-07 08:13:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35075 to 35075. [2021-11-07 08:13:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35075 states, 34545 states have (on average 1.2864090316977854) internal successors, (44439), 34574 states have internal predecessors, (44439), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35075 states to 35075 states and 45359 transitions. [2021-11-07 08:13:37,756 INFO L78 Accepts]: Start accepts. Automaton has 35075 states and 45359 transitions. Word has length 126 [2021-11-07 08:13:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:37,756 INFO L470 AbstractCegarLoop]: Abstraction has 35075 states and 45359 transitions. [2021-11-07 08:13:37,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-07 08:13:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 35075 states and 45359 transitions. [2021-11-07 08:13:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 08:13:37,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:37,768 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:37,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:13:37,769 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:37,769 INFO L85 PathProgramCache]: Analyzing trace with hash -485281844, now seen corresponding path program 1 times [2021-11-07 08:13:37,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:37,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703049671] [2021-11-07 08:13:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:37,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:38,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:38,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703049671] [2021-11-07 08:13:38,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703049671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:38,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:38,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:38,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967338009] [2021-11-07 08:13:38,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:38,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:38,219 INFO L87 Difference]: Start difference. First operand 35075 states and 45359 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:13:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:39,746 INFO L93 Difference]: Finished difference Result 35075 states and 45359 transitions. [2021-11-07 08:13:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:39,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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 128 [2021-11-07 08:13:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:39,840 INFO L225 Difference]: With dead ends: 35075 [2021-11-07 08:13:39,840 INFO L226 Difference]: Without dead ends: 35069 [2021-11-07 08:13:39,859 INFO L786 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 [2021-11-07 08:13:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35069 states. [2021-11-07 08:13:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35069 to 35069. [2021-11-07 08:13:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35069 states, 34542 states have (on average 1.2863470557582073) internal successors, (44433), 34568 states have internal predecessors, (44433), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35069 states to 35069 states and 45353 transitions. [2021-11-07 08:13:41,601 INFO L78 Accepts]: Start accepts. Automaton has 35069 states and 45353 transitions. Word has length 128 [2021-11-07 08:13:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:41,601 INFO L470 AbstractCegarLoop]: Abstraction has 35069 states and 45353 transitions. [2021-11-07 08:13:41,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:13:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 35069 states and 45353 transitions. [2021-11-07 08:13:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 08:13:41,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:41,618 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:41,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:13:41,619 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1795764143, now seen corresponding path program 1 times [2021-11-07 08:13:41,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:41,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621192929] [2021-11-07 08:13:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:41,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:42,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:42,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621192929] [2021-11-07 08:13:42,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621192929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:42,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:42,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:42,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830967779] [2021-11-07 08:13:42,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:42,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:42,164 INFO L87 Difference]: Start difference. First operand 35069 states and 45353 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-07 08:13:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:43,584 INFO L93 Difference]: Finished difference Result 35069 states and 45353 transitions. [2021-11-07 08:13:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 130 [2021-11-07 08:13:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:43,659 INFO L225 Difference]: With dead ends: 35069 [2021-11-07 08:13:43,659 INFO L226 Difference]: Without dead ends: 35063 [2021-11-07 08:13:43,668 INFO L786 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 [2021-11-07 08:13:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35063 states. [2021-11-07 08:13:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35063 to 35063. [2021-11-07 08:13:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35063 states, 34539 states have (on average 1.2862850690523755) internal successors, (44427), 34562 states have internal predecessors, (44427), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35063 states to 35063 states and 45347 transitions. [2021-11-07 08:13:44,962 INFO L78 Accepts]: Start accepts. Automaton has 35063 states and 45347 transitions. Word has length 130 [2021-11-07 08:13:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:44,963 INFO L470 AbstractCegarLoop]: Abstraction has 35063 states and 45347 transitions. [2021-11-07 08:13:44,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-07 08:13:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 35063 states and 45347 transitions. [2021-11-07 08:13:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 08:13:44,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:44,973 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:44,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:13:44,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash -847330286, now seen corresponding path program 1 times [2021-11-07 08:13:44,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:44,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950703056] [2021-11-07 08:13:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:44,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:45,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:45,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950703056] [2021-11-07 08:13:45,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950703056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:45,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:45,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:45,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246911510] [2021-11-07 08:13:45,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:45,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:45,380 INFO L87 Difference]: Start difference. First operand 35063 states and 45347 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-07 08:13:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:47,166 INFO L93 Difference]: Finished difference Result 35063 states and 45347 transitions. [2021-11-07 08:13:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:47,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 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 132 [2021-11-07 08:13:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:47,258 INFO L225 Difference]: With dead ends: 35063 [2021-11-07 08:13:47,259 INFO L226 Difference]: Without dead ends: 35057 [2021-11-07 08:13:47,271 INFO L786 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 [2021-11-07 08:13:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35057 states. [2021-11-07 08:13:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35057 to 35057. [2021-11-07 08:13:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35057 states, 34536 states have (on average 1.2862230715774843) internal successors, (44421), 34556 states have internal predecessors, (44421), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35057 states to 35057 states and 45341 transitions. [2021-11-07 08:13:48,767 INFO L78 Accepts]: Start accepts. Automaton has 35057 states and 45341 transitions. Word has length 132 [2021-11-07 08:13:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:48,767 INFO L470 AbstractCegarLoop]: Abstraction has 35057 states and 45341 transitions. [2021-11-07 08:13:48,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-07 08:13:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 35057 states and 45341 transitions. [2021-11-07 08:13:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 08:13:48,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:48,780 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:13:48,782 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1759562997, now seen corresponding path program 1 times [2021-11-07 08:13:48,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:48,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160294076] [2021-11-07 08:13:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:48,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:49,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:49,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160294076] [2021-11-07 08:13:49,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160294076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:49,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:49,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:49,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683232179] [2021-11-07 08:13:49,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:49,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:49,210 INFO L87 Difference]: Start difference. First operand 35057 states and 45341 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-07 08:13:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:50,806 INFO L93 Difference]: Finished difference Result 35057 states and 45341 transitions. [2021-11-07 08:13:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:50,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 134 [2021-11-07 08:13:50,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:50,881 INFO L225 Difference]: With dead ends: 35057 [2021-11-07 08:13:50,881 INFO L226 Difference]: Without dead ends: 35051 [2021-11-07 08:13:50,895 INFO L786 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 [2021-11-07 08:13:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35051 states. [2021-11-07 08:13:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35051 to 35051. [2021-11-07 08:13:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35051 states, 34533 states have (on average 1.2861610633307272) internal successors, (44415), 34550 states have internal predecessors, (44415), 460 states have call successors, (460), 40 states have call predecessors, (460), 40 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2021-11-07 08:13:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35051 states to 35051 states and 45335 transitions. [2021-11-07 08:13:52,496 INFO L78 Accepts]: Start accepts. Automaton has 35051 states and 45335 transitions. Word has length 134 [2021-11-07 08:13:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:52,496 INFO L470 AbstractCegarLoop]: Abstraction has 35051 states and 45335 transitions. [2021-11-07 08:13:52,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-07 08:13:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 35051 states and 45335 transitions. [2021-11-07 08:13:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 08:13:52,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:52,511 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:52,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:13:52,511 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 08:13:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1276892584, now seen corresponding path program 1 times [2021-11-07 08:13:52,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:52,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916141151] [2021-11-07 08:13:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:52,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:13:52,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:52,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916141151] [2021-11-07 08:13:52,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916141151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:52,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:52,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:13:52,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302899846] [2021-11-07 08:13:52,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:13:52,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:52,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:13:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:13:52,899 INFO L87 Difference]: Start difference. First operand 35051 states and 45335 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-07 08:13:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:54,442 INFO L93 Difference]: Finished difference Result 35051 states and 45335 transitions. [2021-11-07 08:13:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:13:54,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 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 136 [2021-11-07 08:13:54,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:54,531 INFO L225 Difference]: With dead ends: 35051 [2021-11-07 08:13:54,531 INFO L226 Difference]: Without dead ends: 35045 [2021-11-07 08:13:54,540 INFO L786 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 [2021-11-07 08:13:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35045 states.