./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX --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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:41:19,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:41:19,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:41:19,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:41:19,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:41:19,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:41:19,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:41:19,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:41:19,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:41:19,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:41:19,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:41:19,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:41:19,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:41:19,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:41:19,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:41:19,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:41:19,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:41:19,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:41:19,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:41:19,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:41:19,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:41:19,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:41:19,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:41:19,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:41:19,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:41:19,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:41:19,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:41:19,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:41:19,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:41:19,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:41:19,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:41:19,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:41:19,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:41:19,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:41:19,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:41:19,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:41:19,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:41:19,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:41:19,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:41:19,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:41:19,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:41:19,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 10:41:19,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:41:19,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:41:19,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:41:19,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:41:19,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:41:19,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:41:19,841 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:41:19,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:41:19,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:41:19,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:41:19,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:41:19,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:41:19,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:41:19,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:41:19,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:41:19,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:41:19,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:41:19,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:41:19,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:41:19,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:41:19,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:41:19,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:41:19,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:41:19,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:41:19,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:41:19,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:41:19,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:41:19,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:41:19,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:41:19,846 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-09 10:41:20,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:41:20,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:41:20,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:41:20,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:41:20,250 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:41:20,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-09 10:41:20,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/data/ab95821ad/af210ddffcad4789860236f55981bd59/FLAG2a467c1a3 [2021-11-09 10:41:21,530 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:41:21,531 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-09 10:41:21,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/data/ab95821ad/af210ddffcad4789860236f55981bd59/FLAG2a467c1a3 [2021-11-09 10:41:21,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/data/ab95821ad/af210ddffcad4789860236f55981bd59 [2021-11-09 10:41:21,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:41:21,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:41:21,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:41:21,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:41:21,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:41:21,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:41:21" (1/1) ... [2021-11-09 10:41:21,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2dd207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:21, skipping insertion in model container [2021-11-09 10:41:21,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:41:21" (1/1) ... [2021-11-09 10:41:21,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:41:21,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:41:25,584 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-09 10:41:25,588 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-09 10:41:25,589 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-09 10:41:25,589 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-09 10:41:25,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:41:25,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:41:26,343 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-09 10:41:26,344 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-09 10:41:26,345 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-09 10:41:26,346 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_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-09 10:41:26,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:41:26,693 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:41:26,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26 WrapperNode [2021-11-09 10:41:26,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:41:26,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:41:26,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:41:26,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:41:26,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:26,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:27,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:41:27,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:41:27,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:41:27,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:41:27,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:27,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:27,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:27,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:28,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:28,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:28,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:28,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:41:28,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:41:28,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:41:28,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:41:28,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (1/1) ... [2021-11-09 10:41:28,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:41:28,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:28,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:41:28,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcb7f3f-89b1-4cce-92ef-fa560cd31914/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:41:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:41:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:41:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:41:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:41:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:41:28,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:41:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:41:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:41:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 10:41:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-09 10:41:28,628 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-09 10:41:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:41:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:41:57,512 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-09 10:41:57,513 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-09 10:41:57,513 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-09 10:41:57,513 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-09 10:41:57,514 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-09 10:41:57,514 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-09 10:41:57,515 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-09 10:41:58,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:41:58,529 INFO L299 CfgBuilder]: Removed 3411 assume(true) statements. [2021-11-09 10:41:58,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:41:58 BoogieIcfgContainer [2021-11-09 10:41:58,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:41:58,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:41:58,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:41:58,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:41:58,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:41:21" (1/3) ... [2021-11-09 10:41:58,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748dba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:41:58, skipping insertion in model container [2021-11-09 10:41:58,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:26" (2/3) ... [2021-11-09 10:41:58,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748dba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:41:58, skipping insertion in model container [2021-11-09 10:41:58,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:41:58" (3/3) ... [2021-11-09 10:41:58,546 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-09 10:41:58,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:41:58,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-09 10:41:58,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:41:58,628 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 [2021-11-09 10:41:58,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-09 10:41:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:41:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 10:41:58,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:58,701 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] [2021-11-09 10:41:58,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:41:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 619962046, now seen corresponding path program 1 times [2021-11-09 10:41:58,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:58,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578055238] [2021-11-09 10:41:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:58,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:59,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:59,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578055238] [2021-11-09 10:41:59,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578055238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:41:59,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:41:59,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:41:59,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743164282] [2021-11-09 10:41:59,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:41:59,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:41:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:41:59,783 INFO L87 Difference]: Start difference. First operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:02,816 INFO L93 Difference]: Finished difference Result 8635 states and 11145 transitions. [2021-11-09 10:42:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-09 10:42:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:02,872 INFO L225 Difference]: With dead ends: 8635 [2021-11-09 10:42:02,872 INFO L226 Difference]: Without dead ends: 5512 [2021-11-09 10:42:02,890 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 [2021-11-09 10:42:02,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2021-11-09 10:42:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 5450. [2021-11-09 10:42:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5375 states have (on average 1.2673488372093022) internal successors, (6812), 5441 states have internal predecessors, (6812), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 10:42:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6824 transitions. [2021-11-09 10:42:03,223 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6824 transitions. Word has length 54 [2021-11-09 10:42:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:03,224 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 6824 transitions. [2021-11-09 10:42:03,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:03,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6824 transitions. [2021-11-09 10:42:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 10:42:03,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:03,238 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] [2021-11-09 10:42:03,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:42:03,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1150160792, now seen corresponding path program 1 times [2021-11-09 10:42:03,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:03,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076315424] [2021-11-09 10:42:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:03,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:03,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:03,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076315424] [2021-11-09 10:42:03,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076315424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:03,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:03,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:03,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082110881] [2021-11-09 10:42:03,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:03,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:03,760 INFO L87 Difference]: Start difference. First operand 5450 states and 6824 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-09 10:42:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:06,293 INFO L93 Difference]: Finished difference Result 10032 states and 12574 transitions. [2021-11-09 10:42:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-09 10:42:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:06,326 INFO L225 Difference]: With dead ends: 10032 [2021-11-09 10:42:06,326 INFO L226 Difference]: Without dead ends: 4682 [2021-11-09 10:42:06,341 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 [2021-11-09 10:42:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-11-09 10:42:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4682. [2021-11-09 10:42:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 4611 states have (on average 1.2669702884406853) internal successors, (5842), 4673 states have internal predecessors, (5842), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 10:42:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 5854 transitions. [2021-11-09 10:42:06,564 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 5854 transitions. Word has length 59 [2021-11-09 10:42:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:06,567 INFO L470 AbstractCegarLoop]: Abstraction has 4682 states and 5854 transitions. [2021-11-09 10:42:06,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-09 10:42:06,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 5854 transitions. [2021-11-09 10:42:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 10:42:06,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:06,571 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] [2021-11-09 10:42:06,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:42:06,572 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -148878727, now seen corresponding path program 1 times [2021-11-09 10:42:06,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:06,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128132987] [2021-11-09 10:42:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:06,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:06,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:06,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128132987] [2021-11-09 10:42:06,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128132987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:06,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:06,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:06,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309631869] [2021-11-09 10:42:06,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:06,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:06,984 INFO L87 Difference]: Start difference. First operand 4682 states and 5854 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-09 10:42:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:09,835 INFO L93 Difference]: Finished difference Result 12434 states and 15571 transitions. [2021-11-09 10:42:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:09,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-09 10:42:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:09,897 INFO L225 Difference]: With dead ends: 12434 [2021-11-09 10:42:09,897 INFO L226 Difference]: Without dead ends: 7852 [2021-11-09 10:42:09,911 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 [2021-11-09 10:42:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2021-11-09 10:42:10,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 7516. [2021-11-09 10:42:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7516 states, 7437 states have (on average 1.2717493613016002) internal successors, (9458), 7499 states have internal predecessors, (9458), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-09 10:42:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7516 states to 7516 states and 9482 transitions. [2021-11-09 10:42:10,525 INFO L78 Accepts]: Start accepts. Automaton has 7516 states and 9482 transitions. Word has length 59 [2021-11-09 10:42:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:10,527 INFO L470 AbstractCegarLoop]: Abstraction has 7516 states and 9482 transitions. [2021-11-09 10:42:10,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-09 10:42:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states and 9482 transitions. [2021-11-09 10:42:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 10:42:10,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:10,529 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] [2021-11-09 10:42:10,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:42:10,530 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash 589305686, now seen corresponding path program 1 times [2021-11-09 10:42:10,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:10,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595987715] [2021-11-09 10:42:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:10,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:10,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:10,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595987715] [2021-11-09 10:42:10,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595987715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:10,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:10,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:10,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923189199] [2021-11-09 10:42:10,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:10,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:10,944 INFO L87 Difference]: Start difference. First operand 7516 states and 9482 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-09 10:42:13,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:13,586 INFO L93 Difference]: Finished difference Result 13404 states and 16932 transitions. [2021-11-09 10:42:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:13,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-09 10:42:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:13,623 INFO L225 Difference]: With dead ends: 13404 [2021-11-09 10:42:13,624 INFO L226 Difference]: Without dead ends: 5988 [2021-11-09 10:42:13,641 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 [2021-11-09 10:42:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2021-11-09 10:42:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5988. [2021-11-09 10:42:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5913 states have (on average 1.2721122949433452) internal successors, (7522), 5971 states have internal predecessors, (7522), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-09 10:42:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 7546 transitions. [2021-11-09 10:42:13,976 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 7546 transitions. Word has length 60 [2021-11-09 10:42:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:13,978 INFO L470 AbstractCegarLoop]: Abstraction has 5988 states and 7546 transitions. [2021-11-09 10:42:13,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-09 10:42:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 7546 transitions. [2021-11-09 10:42:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 10:42:13,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:13,983 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] [2021-11-09 10:42:13,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:42:13,984 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash -621039907, now seen corresponding path program 1 times [2021-11-09 10:42:13,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:13,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388792889] [2021-11-09 10:42:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:13,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:14,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:14,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388792889] [2021-11-09 10:42:14,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388792889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:14,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:14,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:14,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956575368] [2021-11-09 10:42:14,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:14,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:14,346 INFO L87 Difference]: Start difference. First operand 5988 states and 7546 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-09 10:42:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:16,935 INFO L93 Difference]: Finished difference Result 11918 states and 15009 transitions. [2021-11-09 10:42:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-09 10:42:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:16,996 INFO L225 Difference]: With dead ends: 11918 [2021-11-09 10:42:16,996 INFO L226 Difference]: Without dead ends: 8836 [2021-11-09 10:42:17,007 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 [2021-11-09 10:42:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2021-11-09 10:42:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 8790. [2021-11-09 10:42:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 8707 states have (on average 1.273458137131044) internal successors, (11088), 8765 states have internal predecessors, (11088), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:42:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 11124 transitions. [2021-11-09 10:42:17,497 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 11124 transitions. Word has length 83 [2021-11-09 10:42:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:17,499 INFO L470 AbstractCegarLoop]: Abstraction has 8790 states and 11124 transitions. [2021-11-09 10:42:17,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-09 10:42:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 11124 transitions. [2021-11-09 10:42:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 10:42:17,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:17,506 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] [2021-11-09 10:42:17,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:42:17,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:17,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1900903585, now seen corresponding path program 1 times [2021-11-09 10:42:17,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:17,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305673283] [2021-11-09 10:42:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:17,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:17,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:17,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305673283] [2021-11-09 10:42:17,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305673283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:17,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:17,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:17,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908750694] [2021-11-09 10:42:17,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:17,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:17,864 INFO L87 Difference]: Start difference. First operand 8790 states and 11124 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-09 10:42:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:20,560 INFO L93 Difference]: Finished difference Result 17524 states and 22169 transitions. [2021-11-09 10:42:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:20,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-09 10:42:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:20,599 INFO L225 Difference]: With dead ends: 17524 [2021-11-09 10:42:20,599 INFO L226 Difference]: Without dead ends: 11640 [2021-11-09 10:42:20,618 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 [2021-11-09 10:42:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2021-11-09 10:42:20,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 11587. [2021-11-09 10:42:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11587 states, 11496 states have (on average 1.274269311064718) internal successors, (14649), 11554 states have internal predecessors, (14649), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 14697 transitions. [2021-11-09 10:42:21,061 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 14697 transitions. Word has length 83 [2021-11-09 10:42:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:21,062 INFO L470 AbstractCegarLoop]: Abstraction has 11587 states and 14697 transitions. [2021-11-09 10:42:21,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-09 10:42:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 14697 transitions. [2021-11-09 10:42:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 10:42:21,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:21,071 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] [2021-11-09 10:42:21,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:42:21,073 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1391660714, now seen corresponding path program 1 times [2021-11-09 10:42:21,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:21,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787711115] [2021-11-09 10:42:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:21,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:21,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:21,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787711115] [2021-11-09 10:42:21,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787711115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:21,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:21,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:21,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080980261] [2021-11-09 10:42:21,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:21,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:21,523 INFO L87 Difference]: Start difference. First operand 11587 states and 14697 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:22,305 INFO L93 Difference]: Finished difference Result 11587 states and 14697 transitions. [2021-11-09 10:42:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:22,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-09 10:42:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:22,337 INFO L225 Difference]: With dead ends: 11587 [2021-11-09 10:42:22,337 INFO L226 Difference]: Without dead ends: 11581 [2021-11-09 10:42:22,344 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 [2021-11-09 10:42:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11581 states. [2021-11-09 10:42:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11581 to 11581. [2021-11-09 10:42:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11581 states, 11493 states have (on average 1.274079874706343) internal successors, (14643), 11548 states have internal predecessors, (14643), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11581 states to 11581 states and 14691 transitions. [2021-11-09 10:42:22,868 INFO L78 Accepts]: Start accepts. Automaton has 11581 states and 14691 transitions. Word has length 84 [2021-11-09 10:42:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:22,869 INFO L470 AbstractCegarLoop]: Abstraction has 11581 states and 14691 transitions. [2021-11-09 10:42:22,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11581 states and 14691 transitions. [2021-11-09 10:42:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-09 10:42:22,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:22,872 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] [2021-11-09 10:42:22,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:42:22,872 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1650967527, now seen corresponding path program 1 times [2021-11-09 10:42:22,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:22,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479787000] [2021-11-09 10:42:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:22,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:23,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:23,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479787000] [2021-11-09 10:42:23,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479787000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:23,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:23,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:23,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419830583] [2021-11-09 10:42:23,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:23,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:23,322 INFO L87 Difference]: Start difference. First operand 11581 states and 14691 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:24,130 INFO L93 Difference]: Finished difference Result 11581 states and 14691 transitions. [2021-11-09 10:42:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:24,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-09 10:42:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:24,159 INFO L225 Difference]: With dead ends: 11581 [2021-11-09 10:42:24,159 INFO L226 Difference]: Without dead ends: 11575 [2021-11-09 10:42:24,162 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 [2021-11-09 10:42:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11575 states. [2021-11-09 10:42:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11575 to 11575. [2021-11-09 10:42:24,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11575 states, 11490 states have (on average 1.2738903394255874) internal successors, (14637), 11542 states have internal predecessors, (14637), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11575 states to 11575 states and 14685 transitions. [2021-11-09 10:42:24,684 INFO L78 Accepts]: Start accepts. Automaton has 11575 states and 14685 transitions. Word has length 86 [2021-11-09 10:42:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:24,684 INFO L470 AbstractCegarLoop]: Abstraction has 11575 states and 14685 transitions. [2021-11-09 10:42:24,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 11575 states and 14685 transitions. [2021-11-09 10:42:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 10:42:24,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:24,687 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] [2021-11-09 10:42:24,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 10:42:24,690 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:24,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:24,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1736711332, now seen corresponding path program 1 times [2021-11-09 10:42:24,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:24,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879201179] [2021-11-09 10:42:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:24,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:25,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:25,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879201179] [2021-11-09 10:42:25,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879201179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:25,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:25,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:25,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407689693] [2021-11-09 10:42:25,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:25,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:25,143 INFO L87 Difference]: Start difference. First operand 11575 states and 14685 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:25,864 INFO L93 Difference]: Finished difference Result 11575 states and 14685 transitions. [2021-11-09 10:42:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:25,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-09 10:42:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:25,895 INFO L225 Difference]: With dead ends: 11575 [2021-11-09 10:42:25,895 INFO L226 Difference]: Without dead ends: 11569 [2021-11-09 10:42:25,901 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 [2021-11-09 10:42:25,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2021-11-09 10:42:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 11569. [2021-11-09 10:42:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11487 states have (on average 1.2737007051449465) internal successors, (14631), 11536 states have internal predecessors, (14631), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 14679 transitions. [2021-11-09 10:42:26,638 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 14679 transitions. Word has length 88 [2021-11-09 10:42:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:26,639 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 14679 transitions. [2021-11-09 10:42:26,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 14679 transitions. [2021-11-09 10:42:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 10:42:26,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:26,642 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] [2021-11-09 10:42:26,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 10:42:26,643 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1762838303, now seen corresponding path program 1 times [2021-11-09 10:42:26,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:26,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204659689] [2021-11-09 10:42:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:26,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:27,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:27,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204659689] [2021-11-09 10:42:27,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204659689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:27,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:27,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:27,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793156436] [2021-11-09 10:42:27,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:27,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:27,119 INFO L87 Difference]: Start difference. First operand 11569 states and 14679 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-09 10:42:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:27,898 INFO L93 Difference]: Finished difference Result 11569 states and 14679 transitions. [2021-11-09 10:42:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:27,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 [2021-11-09 10:42:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:27,928 INFO L225 Difference]: With dead ends: 11569 [2021-11-09 10:42:27,928 INFO L226 Difference]: Without dead ends: 11563 [2021-11-09 10:42:27,934 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 [2021-11-09 10:42:27,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11563 states. [2021-11-09 10:42:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11563 to 11563. [2021-11-09 10:42:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11563 states, 11484 states have (on average 1.2735109717868338) internal successors, (14625), 11530 states have internal predecessors, (14625), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11563 states to 11563 states and 14673 transitions. [2021-11-09 10:42:28,620 INFO L78 Accepts]: Start accepts. Automaton has 11563 states and 14673 transitions. Word has length 90 [2021-11-09 10:42:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:28,621 INFO L470 AbstractCegarLoop]: Abstraction has 11563 states and 14673 transitions. [2021-11-09 10:42:28,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-09 10:42:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11563 states and 14673 transitions. [2021-11-09 10:42:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 10:42:28,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:28,624 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] [2021-11-09 10:42:28,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:42:28,625 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:28,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1870645090, now seen corresponding path program 1 times [2021-11-09 10:42:28,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:28,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004668197] [2021-11-09 10:42:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:28,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:28,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:28,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004668197] [2021-11-09 10:42:28,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004668197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:28,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:28,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:28,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140627466] [2021-11-09 10:42:28,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:28,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:29,000 INFO L87 Difference]: Start difference. First operand 11563 states and 14673 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-09 10:42:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:29,754 INFO L93 Difference]: Finished difference Result 11563 states and 14673 transitions. [2021-11-09 10:42:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 92 [2021-11-09 10:42:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:29,784 INFO L225 Difference]: With dead ends: 11563 [2021-11-09 10:42:29,785 INFO L226 Difference]: Without dead ends: 11557 [2021-11-09 10:42:29,791 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 [2021-11-09 10:42:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11557 states. [2021-11-09 10:42:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11557 to 11557. [2021-11-09 10:42:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11557 states, 11481 states have (on average 1.2733211392735824) internal successors, (14619), 11524 states have internal predecessors, (14619), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11557 states to 11557 states and 14667 transitions. [2021-11-09 10:42:30,328 INFO L78 Accepts]: Start accepts. Automaton has 11557 states and 14667 transitions. Word has length 92 [2021-11-09 10:42:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:30,328 INFO L470 AbstractCegarLoop]: Abstraction has 11557 states and 14667 transitions. [2021-11-09 10:42:30,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-09 10:42:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 11557 states and 14667 transitions. [2021-11-09 10:42:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 10:42:30,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:30,332 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] [2021-11-09 10:42:30,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 10:42:30,332 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1901214683, now seen corresponding path program 1 times [2021-11-09 10:42:30,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:30,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533798695] [2021-11-09 10:42:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:30,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:30,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:30,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533798695] [2021-11-09 10:42:30,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533798695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:30,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:30,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:30,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983632538] [2021-11-09 10:42:30,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:30,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:30,814 INFO L87 Difference]: Start difference. First operand 11557 states and 14667 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-09 10:42:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:31,670 INFO L93 Difference]: Finished difference Result 11557 states and 14667 transitions. [2021-11-09 10:42:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:31,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 94 [2021-11-09 10:42:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:31,702 INFO L225 Difference]: With dead ends: 11557 [2021-11-09 10:42:31,702 INFO L226 Difference]: Without dead ends: 11551 [2021-11-09 10:42:31,709 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 [2021-11-09 10:42:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11551 states. [2021-11-09 10:42:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11551 to 11551. [2021-11-09 10:42:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11478 states have (on average 1.273131207527444) internal successors, (14613), 11518 states have internal predecessors, (14613), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 14661 transitions. [2021-11-09 10:42:32,313 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 14661 transitions. Word has length 94 [2021-11-09 10:42:32,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:32,313 INFO L470 AbstractCegarLoop]: Abstraction has 11551 states and 14661 transitions. [2021-11-09 10:42:32,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-09 10:42:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 14661 transitions. [2021-11-09 10:42:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 10:42:32,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:32,317 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] [2021-11-09 10:42:32,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 10:42:32,317 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1706058392, now seen corresponding path program 1 times [2021-11-09 10:42:32,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:32,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508166423] [2021-11-09 10:42:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:32,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:32,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:32,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508166423] [2021-11-09 10:42:32,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508166423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:32,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:32,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:32,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817646724] [2021-11-09 10:42:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:32,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:32,784 INFO L87 Difference]: Start difference. First operand 11551 states and 14661 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-09 10:42:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:33,878 INFO L93 Difference]: Finished difference Result 11551 states and 14661 transitions. [2021-11-09 10:42:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 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 96 [2021-11-09 10:42:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:33,908 INFO L225 Difference]: With dead ends: 11551 [2021-11-09 10:42:33,908 INFO L226 Difference]: Without dead ends: 11545 [2021-11-09 10:42:33,915 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 [2021-11-09 10:42:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2021-11-09 10:42:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 11545. [2021-11-09 10:42:34,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11545 states, 11475 states have (on average 1.2729411764705882) internal successors, (14607), 11512 states have internal predecessors, (14607), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11545 states to 11545 states and 14655 transitions. [2021-11-09 10:42:34,540 INFO L78 Accepts]: Start accepts. Automaton has 11545 states and 14655 transitions. Word has length 96 [2021-11-09 10:42:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:34,540 INFO L470 AbstractCegarLoop]: Abstraction has 11545 states and 14655 transitions. [2021-11-09 10:42:34,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-09 10:42:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 11545 states and 14655 transitions. [2021-11-09 10:42:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-09 10:42:34,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:34,544 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] [2021-11-09 10:42:34,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 10:42:34,545 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1155543851, now seen corresponding path program 1 times [2021-11-09 10:42:34,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:34,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231416967] [2021-11-09 10:42:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:34,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:34,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:34,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231416967] [2021-11-09 10:42:34,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231416967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:34,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:34,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:34,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511119800] [2021-11-09 10:42:34,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:34,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:34,925 INFO L87 Difference]: Start difference. First operand 11545 states and 14655 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-09 10:42:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:35,795 INFO L93 Difference]: Finished difference Result 11545 states and 14655 transitions. [2021-11-09 10:42:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:35,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 98 [2021-11-09 10:42:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:35,826 INFO L225 Difference]: With dead ends: 11545 [2021-11-09 10:42:35,827 INFO L226 Difference]: Without dead ends: 11539 [2021-11-09 10:42:35,833 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 [2021-11-09 10:42:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2021-11-09 10:42:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 11539. [2021-11-09 10:42:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11539 states, 11472 states have (on average 1.2727510460251046) internal successors, (14601), 11506 states have internal predecessors, (14601), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11539 states to 11539 states and 14649 transitions. [2021-11-09 10:42:36,487 INFO L78 Accepts]: Start accepts. Automaton has 11539 states and 14649 transitions. Word has length 98 [2021-11-09 10:42:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:36,488 INFO L470 AbstractCegarLoop]: Abstraction has 11539 states and 14649 transitions. [2021-11-09 10:42:36,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-09 10:42:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 11539 states and 14649 transitions. [2021-11-09 10:42:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 10:42:36,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:36,492 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] [2021-11-09 10:42:36,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 10:42:36,492 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:36,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1918737042, now seen corresponding path program 1 times [2021-11-09 10:42:36,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:36,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087705806] [2021-11-09 10:42:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:36,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:36,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:36,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087705806] [2021-11-09 10:42:36,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087705806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:36,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:36,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:36,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789170371] [2021-11-09 10:42:36,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:36,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:36,972 INFO L87 Difference]: Start difference. First operand 11539 states and 14649 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-09 10:42:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:37,821 INFO L93 Difference]: Finished difference Result 11539 states and 14649 transitions. [2021-11-09 10:42:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:37,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 100 [2021-11-09 10:42:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:37,853 INFO L225 Difference]: With dead ends: 11539 [2021-11-09 10:42:37,853 INFO L226 Difference]: Without dead ends: 11533 [2021-11-09 10:42:37,860 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 [2021-11-09 10:42:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-11-09 10:42:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11533. [2021-11-09 10:42:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11533 states, 11469 states have (on average 1.2725608161130002) internal successors, (14595), 11500 states have internal predecessors, (14595), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11533 states to 11533 states and 14643 transitions. [2021-11-09 10:42:38,608 INFO L78 Accepts]: Start accepts. Automaton has 11533 states and 14643 transitions. Word has length 100 [2021-11-09 10:42:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:38,608 INFO L470 AbstractCegarLoop]: Abstraction has 11533 states and 14643 transitions. [2021-11-09 10:42:38,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-09 10:42:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 11533 states and 14643 transitions. [2021-11-09 10:42:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 10:42:38,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:38,613 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] [2021-11-09 10:42:38,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 10:42:38,613 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:38,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1365175247, now seen corresponding path program 1 times [2021-11-09 10:42:38,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:38,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893603762] [2021-11-09 10:42:38,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:38,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:39,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:39,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893603762] [2021-11-09 10:42:39,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893603762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:39,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:39,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:39,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881304429] [2021-11-09 10:42:39,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:39,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:39,057 INFO L87 Difference]: Start difference. First operand 11533 states and 14643 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-11-09 10:42:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:40,006 INFO L93 Difference]: Finished difference Result 11533 states and 14643 transitions. [2021-11-09 10:42:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 102 [2021-11-09 10:42:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:40,036 INFO L225 Difference]: With dead ends: 11533 [2021-11-09 10:42:40,037 INFO L226 Difference]: Without dead ends: 11527 [2021-11-09 10:42:40,042 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 [2021-11-09 10:42:40,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11527 states. [2021-11-09 10:42:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11527 to 11527. [2021-11-09 10:42:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11527 states, 11466 states have (on average 1.272370486656201) internal successors, (14589), 11494 states have internal predecessors, (14589), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 14637 transitions. [2021-11-09 10:42:40,833 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 14637 transitions. Word has length 102 [2021-11-09 10:42:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:40,833 INFO L470 AbstractCegarLoop]: Abstraction has 11527 states and 14637 transitions. [2021-11-09 10:42:40,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-11-09 10:42:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 14637 transitions. [2021-11-09 10:42:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 10:42:40,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:40,838 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] [2021-11-09 10:42:40,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 10:42:40,838 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:40,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1968234636, now seen corresponding path program 1 times [2021-11-09 10:42:40,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:40,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488618256] [2021-11-09 10:42:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:40,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:41,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:41,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488618256] [2021-11-09 10:42:41,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488618256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:41,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:41,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:41,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702366321] [2021-11-09 10:42:41,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:41,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:41,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:41,179 INFO L87 Difference]: Start difference. First operand 11527 states and 14637 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-09 10:42:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:41,924 INFO L93 Difference]: Finished difference Result 11527 states and 14637 transitions. [2021-11-09 10:42:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:41,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 104 [2021-11-09 10:42:41,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:41,951 INFO L225 Difference]: With dead ends: 11527 [2021-11-09 10:42:41,951 INFO L226 Difference]: Without dead ends: 11521 [2021-11-09 10:42:41,958 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 [2021-11-09 10:42:41,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2021-11-09 10:42:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11521. [2021-11-09 10:42:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11521 states, 11463 states have (on average 1.2721800575765507) internal successors, (14583), 11488 states have internal predecessors, (14583), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 14631 transitions. [2021-11-09 10:42:42,700 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 14631 transitions. Word has length 104 [2021-11-09 10:42:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:42,701 INFO L470 AbstractCegarLoop]: Abstraction has 11521 states and 14631 transitions. [2021-11-09 10:42:42,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-09 10:42:42,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 14631 transitions. [2021-11-09 10:42:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 10:42:42,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:42,705 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] [2021-11-09 10:42:42,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 10:42:42,706 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:42,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1687722185, now seen corresponding path program 1 times [2021-11-09 10:42:42,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:42,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893304829] [2021-11-09 10:42:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:42,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:42:43,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:43,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893304829] [2021-11-09 10:42:43,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893304829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:43,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:43,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:43,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591444050] [2021-11-09 10:42:43,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:43,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:43,050 INFO L87 Difference]: Start difference. First operand 11521 states and 14631 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-09 10:42:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:43,885 INFO L93 Difference]: Finished difference Result 11521 states and 14631 transitions. [2021-11-09 10:42:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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 106 [2021-11-09 10:42:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:43,905 INFO L225 Difference]: With dead ends: 11521 [2021-11-09 10:42:43,905 INFO L226 Difference]: Without dead ends: 11422 [2021-11-09 10:42:43,911 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 [2021-11-09 10:42:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2021-11-09 10:42:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 11422. [2021-11-09 10:42:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11422 states, 11367 states have (on average 1.273774962611067) internal successors, (14479), 11389 states have internal predecessors, (14479), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 10:42:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 14527 transitions. [2021-11-09 10:42:44,728 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 14527 transitions. Word has length 106 [2021-11-09 10:42:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:44,729 INFO L470 AbstractCegarLoop]: Abstraction has 11422 states and 14527 transitions. [2021-11-09 10:42:44,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-09 10:42:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 14527 transitions. [2021-11-09 10:42:44,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 10:42:44,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:44,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:42:44,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 10:42:44,734 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:44,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:44,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1775453187, now seen corresponding path program 1 times [2021-11-09 10:42:44,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:44,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977809980] [2021-11-09 10:42:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:44,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:44,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:44,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977809980] [2021-11-09 10:42:44,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977809980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:44,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:44,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:44,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182489994] [2021-11-09 10:42:44,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:44,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:44,984 INFO L87 Difference]: Start difference. First operand 11422 states and 14527 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-09 10:42:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:48,152 INFO L93 Difference]: Finished difference Result 22498 states and 28664 transitions. [2021-11-09 10:42:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-09 10:42:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:48,173 INFO L225 Difference]: With dead ends: 22498 [2021-11-09 10:42:48,173 INFO L226 Difference]: Without dead ends: 11118 [2021-11-09 10:42:48,201 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 [2021-11-09 10:42:48,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2021-11-09 10:42:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 11076. [2021-11-09 10:42:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11076 states, 11029 states have (on average 1.2709221144256053) internal successors, (14017), 11051 states have internal predecessors, (14017), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:42:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11076 states to 11076 states and 14053 transitions. [2021-11-09 10:42:49,072 INFO L78 Accepts]: Start accepts. Automaton has 11076 states and 14053 transitions. Word has length 108 [2021-11-09 10:42:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:49,072 INFO L470 AbstractCegarLoop]: Abstraction has 11076 states and 14053 transitions. [2021-11-09 10:42:49,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-09 10:42:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 11076 states and 14053 transitions. [2021-11-09 10:42:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-09 10:42:49,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:49,079 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:42:49,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 10:42:49,079 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:49,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash -86695441, now seen corresponding path program 1 times [2021-11-09 10:42:49,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:49,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849861235] [2021-11-09 10:42:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:49,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:49,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:49,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849861235] [2021-11-09 10:42:49,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849861235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:49,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:49,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:49,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075681180] [2021-11-09 10:42:49,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:49,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:49,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:49,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:49,443 INFO L87 Difference]: Start difference. First operand 11076 states and 14053 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-09 10:42:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:52,551 INFO L93 Difference]: Finished difference Result 24478 states and 31119 transitions. [2021-11-09 10:42:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:52,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-09 10:42:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:52,573 INFO L225 Difference]: With dead ends: 24478 [2021-11-09 10:42:52,573 INFO L226 Difference]: Without dead ends: 13566 [2021-11-09 10:42:52,594 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 [2021-11-09 10:42:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2021-11-09 10:42:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 13524. [2021-11-09 10:42:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13524 states, 13477 states have (on average 1.2700155821028418) internal successors, (17116), 13499 states have internal predecessors, (17116), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:42:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13524 states to 13524 states and 17152 transitions. [2021-11-09 10:42:53,362 INFO L78 Accepts]: Start accepts. Automaton has 13524 states and 17152 transitions. Word has length 140 [2021-11-09 10:42:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:53,362 INFO L470 AbstractCegarLoop]: Abstraction has 13524 states and 17152 transitions. [2021-11-09 10:42:53,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-09 10:42:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 13524 states and 17152 transitions. [2021-11-09 10:42:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-09 10:42:53,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:53,368 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:42:53,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 10:42:53,369 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1125790003, now seen corresponding path program 1 times [2021-11-09 10:42:53,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:53,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973802303] [2021-11-09 10:42:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:53,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:42:53,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:53,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973802303] [2021-11-09 10:42:53,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973802303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:53,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:53,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:53,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212742530] [2021-11-09 10:42:53,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:53,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:53,690 INFO L87 Difference]: Start difference. First operand 13524 states and 17152 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-09 10:42:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:56,954 INFO L93 Difference]: Finished difference Result 29350 states and 37269 transitions. [2021-11-09 10:42:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:56,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 170 [2021-11-09 10:42:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:56,980 INFO L225 Difference]: With dead ends: 29350 [2021-11-09 10:42:56,980 INFO L226 Difference]: Without dead ends: 15939 [2021-11-09 10:42:57,000 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 [2021-11-09 10:42:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2021-11-09 10:42:57,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15897. [2021-11-09 10:42:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15850 states have (on average 1.2696529968454258) internal successors, (20124), 15872 states have internal predecessors, (20124), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:42:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 20160 transitions. [2021-11-09 10:42:57,892 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 20160 transitions. Word has length 170 [2021-11-09 10:42:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:57,893 INFO L470 AbstractCegarLoop]: Abstraction has 15897 states and 20160 transitions. [2021-11-09 10:42:57,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-09 10:42:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 20160 transitions. [2021-11-09 10:42:57,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-09 10:42:57,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:57,898 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:42:57,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 10:42:57,899 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:42:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash 633163829, now seen corresponding path program 1 times [2021-11-09 10:42:57,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:57,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096536447] [2021-11-09 10:42:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:57,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:42:58,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:58,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096536447] [2021-11-09 10:42:58,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096536447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:58,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:58,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:58,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275399600] [2021-11-09 10:42:58,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:58,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:58,207 INFO L87 Difference]: Start difference. First operand 15897 states and 20160 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-09 10:43:01,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:01,626 INFO L93 Difference]: Finished difference Result 34114 states and 43321 transitions. [2021-11-09 10:43:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:01,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 170 [2021-11-09 10:43:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:01,654 INFO L225 Difference]: With dead ends: 34114 [2021-11-09 10:43:01,654 INFO L226 Difference]: Without dead ends: 18381 [2021-11-09 10:43:01,669 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 [2021-11-09 10:43:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18381 states. [2021-11-09 10:43:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18381 to 18339. [2021-11-09 10:43:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18339 states, 18292 states have (on average 1.2692433850863765) internal successors, (23217), 18314 states have internal predecessors, (23217), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:43:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18339 states to 18339 states and 23253 transitions. [2021-11-09 10:43:02,559 INFO L78 Accepts]: Start accepts. Automaton has 18339 states and 23253 transitions. Word has length 170 [2021-11-09 10:43:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:02,559 INFO L470 AbstractCegarLoop]: Abstraction has 18339 states and 23253 transitions. [2021-11-09 10:43:02,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-09 10:43:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 18339 states and 23253 transitions. [2021-11-09 10:43:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-09 10:43:02,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:02,569 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:02,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 10:43:02,570 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:43:02,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash 613054494, now seen corresponding path program 1 times [2021-11-09 10:43:02,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:02,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411059001] [2021-11-09 10:43:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:02,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 10:43:02,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:02,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411059001] [2021-11-09 10:43:02,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411059001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:02,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:02,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:02,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124458336] [2021-11-09 10:43:02,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:02,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:02,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:02,928 INFO L87 Difference]: Start difference. First operand 18339 states and 23253 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-09 10:43:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:06,725 INFO L93 Difference]: Finished difference Result 38986 states and 49483 transitions. [2021-11-09 10:43:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:06,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 213 [2021-11-09 10:43:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:06,768 INFO L225 Difference]: With dead ends: 38986 [2021-11-09 10:43:06,769 INFO L226 Difference]: Without dead ends: 20811 [2021-11-09 10:43:06,801 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 [2021-11-09 10:43:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20811 states. [2021-11-09 10:43:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20811 to 20769. [2021-11-09 10:43:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20769 states, 20722 states have (on average 1.269085995560274) internal successors, (26298), 20744 states have internal predecessors, (26298), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:43:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20769 states to 20769 states and 26334 transitions. [2021-11-09 10:43:07,819 INFO L78 Accepts]: Start accepts. Automaton has 20769 states and 26334 transitions. Word has length 213 [2021-11-09 10:43:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:07,820 INFO L470 AbstractCegarLoop]: Abstraction has 20769 states and 26334 transitions. [2021-11-09 10:43:07,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-09 10:43:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20769 states and 26334 transitions. [2021-11-09 10:43:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-09 10:43:07,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:07,831 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:07,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 10:43:07,831 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:43:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash 120428320, now seen corresponding path program 1 times [2021-11-09 10:43:07,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:07,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072130368] [2021-11-09 10:43:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:07,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 10:43:08,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:08,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072130368] [2021-11-09 10:43:08,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072130368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:08,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:08,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:08,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088506484] [2021-11-09 10:43:08,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:08,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:08,187 INFO L87 Difference]: Start difference. First operand 20769 states and 26334 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-09 10:43:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:11,802 INFO L93 Difference]: Finished difference Result 43852 states and 55657 transitions. [2021-11-09 10:43:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:11,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 213 [2021-11-09 10:43:11,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:11,838 INFO L225 Difference]: With dead ends: 43852 [2021-11-09 10:43:11,838 INFO L226 Difference]: Without dead ends: 23247 [2021-11-09 10:43:11,870 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 [2021-11-09 10:43:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23247 states. [2021-11-09 10:43:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23247 to 23205. [2021-11-09 10:43:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23205 states, 23158 states have (on average 1.2688919595820018) internal successors, (29385), 23180 states have internal predecessors, (29385), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:43:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23205 states to 23205 states and 29421 transitions. [2021-11-09 10:43:13,168 INFO L78 Accepts]: Start accepts. Automaton has 23205 states and 29421 transitions. Word has length 213 [2021-11-09 10:43:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:13,169 INFO L470 AbstractCegarLoop]: Abstraction has 23205 states and 29421 transitions. [2021-11-09 10:43:13,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-09 10:43:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 23205 states and 29421 transitions. [2021-11-09 10:43:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 10:43:13,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:13,180 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:13,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 10:43:13,180 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:43:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash -957563151, now seen corresponding path program 1 times [2021-11-09 10:43:13,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:13,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039925435] [2021-11-09 10:43:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:13,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 10:43:13,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:13,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039925435] [2021-11-09 10:43:13,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039925435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:13,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:13,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:13,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010147242] [2021-11-09 10:43:13,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:13,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:13,566 INFO L87 Difference]: Start difference. First operand 23205 states and 29421 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:16,173 INFO L93 Difference]: Finished difference Result 67957 states and 86223 transitions. [2021-11-09 10:43:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:16,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-09 10:43:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:16,273 INFO L225 Difference]: With dead ends: 67957 [2021-11-09 10:43:16,273 INFO L226 Difference]: Without dead ends: 44916 [2021-11-09 10:43:16,300 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 [2021-11-09 10:43:16,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44916 states. [2021-11-09 10:43:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44916 to 23211. [2021-11-09 10:43:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23211 states, 23164 states have (on average 1.2688223104817822) internal successors, (29391), 23186 states have internal predecessors, (29391), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:43:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23211 states to 23211 states and 29427 transitions. [2021-11-09 10:43:18,355 INFO L78 Accepts]: Start accepts. Automaton has 23211 states and 29427 transitions. Word has length 235 [2021-11-09 10:43:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:18,356 INFO L470 AbstractCegarLoop]: Abstraction has 23211 states and 29427 transitions. [2021-11-09 10:43:18,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23211 states and 29427 transitions. [2021-11-09 10:43:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-09 10:43:18,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:18,364 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:18,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 10:43:18,365 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:43:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash -687532564, now seen corresponding path program 1 times [2021-11-09 10:43:18,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:18,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278343781] [2021-11-09 10:43:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:18,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 10:43:18,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:18,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278343781] [2021-11-09 10:43:18,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278343781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:18,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:18,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:43:18,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109383379] [2021-11-09 10:43:18,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:43:18,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:43:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:43:18,712 INFO L87 Difference]: Start difference. First operand 23211 states and 29427 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:23,128 INFO L93 Difference]: Finished difference Result 86883 states and 110142 transitions. [2021-11-09 10:43:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:43:23,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-09 10:43:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:23,225 INFO L225 Difference]: With dead ends: 86883 [2021-11-09 10:43:23,225 INFO L226 Difference]: Without dead ends: 63836 [2021-11-09 10:43:23,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63836 states. [2021-11-09 10:43:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63836 to 23223. [2021-11-09 10:43:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23223 states, 23176 states have (on average 1.268683120469451) internal successors, (29403), 23198 states have internal predecessors, (29403), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:43:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23223 states to 23223 states and 29439 transitions. [2021-11-09 10:43:25,765 INFO L78 Accepts]: Start accepts. Automaton has 23223 states and 29439 transitions. Word has length 237 [2021-11-09 10:43:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:25,765 INFO L470 AbstractCegarLoop]: Abstraction has 23223 states and 29439 transitions. [2021-11-09 10:43:25,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 23223 states and 29439 transitions. [2021-11-09 10:43:25,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-09 10:43:25,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:25,777 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:25,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 10:43:25,777 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:43:25,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:25,778 INFO L85 PathProgramCache]: Analyzing trace with hash 183480992, now seen corresponding path program 1 times [2021-11-09 10:43:25,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:25,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423793799] [2021-11-09 10:43:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:25,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 10:43:26,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:26,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423793799] [2021-11-09 10:43:26,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423793799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:26,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:26,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:26,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108880574] [2021-11-09 10:43:26,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:26,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:26,185 INFO L87 Difference]: Start difference. First operand 23223 states and 29439 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:29,128 INFO L93 Difference]: Finished difference Result 46288 states and 58702 transitions. [2021-11-09 10:43:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:29,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-09 10:43:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:29,175 INFO L225 Difference]: With dead ends: 46288 [2021-11-09 10:43:29,175 INFO L226 Difference]: Without dead ends: 23229 [2021-11-09 10:43:29,205 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 [2021-11-09 10:43:29,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23229 states. [2021-11-09 10:43:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23229 to 23229. [2021-11-09 10:43:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23229 states, 23182 states have (on average 1.2686135795013374) internal successors, (29409), 23204 states have internal predecessors, (29409), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-09 10:43:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 29445 transitions. [2021-11-09 10:43:31,728 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 29445 transitions. Word has length 237 [2021-11-09 10:43:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:31,728 INFO L470 AbstractCegarLoop]: Abstraction has 23229 states and 29445 transitions. [2021-11-09 10:43:31,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 29445 transitions. [2021-11-09 10:43:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-09 10:43:31,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:31,738 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:31,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 10:43:31,738 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-09 10:43:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash -484662460, now seen corresponding path program 1 times [2021-11-09 10:43:31,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:31,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131789685] [2021-11-09 10:43:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:31,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-09 10:43:32,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:32,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131789685] [2021-11-09 10:43:32,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131789685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:32,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:32,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:43:32,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446247480] [2021-11-09 10:43:32,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:43:32,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:43:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:43:32,218 INFO L87 Difference]: Start difference. First operand 23229 states and 29445 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)