./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:25:31,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:25:31,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:25:31,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:25:31,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:25:31,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:25:31,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:25:31,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:25:31,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:25:31,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:25:31,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:25:31,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:25:31,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:25:31,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:25:31,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:25:31,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:25:31,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:25:31,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:25:31,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:25:31,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:25:31,832 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:25:31,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:25:31,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:25:31,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:25:31,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:25:31,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:25:31,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:25:31,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:25:31,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:25:31,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:25:31,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:25:31,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:25:31,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:25:31,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:25:31,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:25:31,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:25:31,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:25:31,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:25:31,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:25:31,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:25:31,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:25:31,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:25:31,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:25:31,873 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:25:31,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:25:31,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:25:31,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:25:31,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:25:31,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:25:31,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:25:31,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:25:31,875 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:25:31,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:25:31,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:25:31,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:25:31,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:25:31,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:25:31,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:25:31,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:25:31,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:25:31,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:25:31,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:25:31,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:25:31,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:25:31,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:25:31,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:25:31,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:25:31,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:25:31,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:25:31,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:25:31,886 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:25:31,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:25:31,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:25:31,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b [2022-07-21 11:25:32,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:25:32,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:25:32,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:25:32,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:25:32,144 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:25:32,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2022-07-21 11:25:32,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8225e391/26a8ebe1e8e64e299a91c43d0cdb5317/FLAG1c887bf97 [2022-07-21 11:25:32,791 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:25:32,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2022-07-21 11:25:32,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8225e391/26a8ebe1e8e64e299a91c43d0cdb5317/FLAG1c887bf97 [2022-07-21 11:25:32,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8225e391/26a8ebe1e8e64e299a91c43d0cdb5317 [2022-07-21 11:25:32,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:25:32,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:25:32,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:25:32,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:25:32,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:25:32,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:25:32" (1/1) ... [2022-07-21 11:25:32,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411c602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:32, skipping insertion in model container [2022-07-21 11:25:32,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:25:32" (1/1) ... [2022-07-21 11:25:32,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:25:33,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:25:33,420 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2022-07-21 11:25:33,421 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2022-07-21 11:25:33,696 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2022-07-21 11:25:34,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:25:34,411 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:25:34,486 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2022-07-21 11:25:34,487 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2022-07-21 11:25:34,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2022-07-21 11:25:34,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:25:34,948 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:25:34,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34 WrapperNode [2022-07-21 11:25:34,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:25:34,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:25:34,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:25:34,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:25:34,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,156 INFO L137 Inliner]: procedures = 324, calls = 3022, calls flagged for inlining = 155, calls inlined = 152, statements flattened = 6316 [2022-07-21 11:25:35,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:25:35,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:25:35,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:25:35,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:25:35,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:25:35,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:25:35,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:25:35,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:25:35,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (1/1) ... [2022-07-21 11:25:35,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:25:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:25:35,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:25:35,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:25:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-21 11:25:35,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-21 11:25:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-21 11:25:35,532 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-21 11:25:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure hso_start_serial_device [2022-07-21 11:25:35,533 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_start_serial_device [2022-07-21 11:25:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-21 11:25:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:25:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:25:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:25:35,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:25:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2022-07-21 11:25:35,533 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2022-07-21 11:25:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure mux_device_request [2022-07-21 11:25:35,534 INFO L138 BoogieDeclarations]: Found implementation of procedure mux_device_request [2022-07-21 11:25:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure hso_unthrottle [2022-07-21 11:25:35,534 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_unthrottle [2022-07-21 11:25:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure hso_get_ep [2022-07-21 11:25:35,534 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_get_ep [2022-07-21 11:25:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-07-21 11:25:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-07-21 11:25:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 11:25:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 11:25:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-21 11:25:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-21 11:25:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:25:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:25:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure hso_kick_transmit [2022-07-21 11:25:35,536 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_kick_transmit [2022-07-21 11:25:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure hso_get_activity [2022-07-21 11:25:35,536 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_get_activity [2022-07-21 11:25:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure fix_crc_bug [2022-07-21 11:25:35,536 INFO L138 BoogieDeclarations]: Found implementation of procedure fix_crc_bug [2022-07-21 11:25:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-07-21 11:25:35,537 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-07-21 11:25:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_set_termios [2022-07-21 11:25:35,537 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_set_termios [2022-07-21 11:25:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 11:25:35,537 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 11:25:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-21 11:25:35,537 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-21 11:25:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:25:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:25:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure dev2ser [2022-07-21 11:25:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure dev2ser [2022-07-21 11:25:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 11:25:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 11:25:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:25:35,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:25:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:25:35,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:25:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 11:25:35,540 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 11:25:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:25:35,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:25:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_device [2022-07-21 11:25:35,541 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_device [2022-07-21 11:25:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure hso_create_net_device [2022-07-21 11:25:35,541 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_create_net_device [2022-07-21 11:25:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-21 11:25:35,541 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-21 11:25:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:25:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 11:25:35,542 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 11:25:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 11:25:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure put_rxbuf_data [2022-07-21 11:25:35,542 INFO L138 BoogieDeclarations]: Found implementation of procedure put_rxbuf_data [2022-07-21 11:25:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_tiocmget [2022-07-21 11:25:35,554 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_tiocmget [2022-07-21 11:25:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_net_device [2022-07-21 11:25:35,554 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_net_device [2022-07-21 11:25:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:25:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-21 11:25:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-21 11:25:35,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-21 11:25:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 11:25:35,555 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 11:25:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure hso_mux_serial_read [2022-07-21 11:25:35,555 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_mux_serial_read [2022-07-21 11:25:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_common_free [2022-07-21 11:25:35,556 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_common_free [2022-07-21 11:25:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:25:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-21 11:25:35,556 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-21 11:25:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:25:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure hso_get_count [2022-07-21 11:25:35,557 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_get_count [2022-07-21 11:25:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget_submit_urb [2022-07-21 11:25:35,557 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget_submit_urb [2022-07-21 11:25:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-07-21 11:25:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-07-21 11:25:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-21 11:25:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-21 11:25:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-21 11:25:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-21 11:25:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 11:25:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 11:25:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_close [2022-07-21 11:25:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_close [2022-07-21 11:25:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 11:25:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 11:25:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 11:25:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 11:25:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-21 11:25:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-21 11:25:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 11:25:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 11:25:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-21 11:25:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-21 11:25:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-21 11:25:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-21 11:25:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure _hso_serial_set_termios [2022-07-21 11:25:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure _hso_serial_set_termios [2022-07-21 11:25:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-21 11:25:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-21 11:25:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:25:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:25:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:25:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure hso_resume [2022-07-21 11:25:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_resume [2022-07-21 11:25:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure put_rxbuf_data_and_resubmit_bulk_urb [2022-07-21 11:25:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure put_rxbuf_data_and_resubmit_bulk_urb [2022-07-21 11:25:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:25:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:25:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure hso_put_activity [2022-07-21 11:25:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_put_activity [2022-07-21 11:25:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:25:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2022-07-21 11:25:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2022-07-21 11:25:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure hso_mux_submit_intr_urb [2022-07-21 11:25:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_mux_submit_intr_urb [2022-07-21 11:25:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2022-07-21 11:25:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2022-07-21 11:25:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-07-21 11:25:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-07-21 11:25:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure hso_mux_to_port [2022-07-21 11:25:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_mux_to_port [2022-07-21 11:25:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:25:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_chars_in_buffer [2022-07-21 11:25:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_chars_in_buffer [2022-07-21 11:25:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure dev2net [2022-07-21 11:25:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure dev2net [2022-07-21 11:25:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2022-07-21 11:25:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2022-07-21 11:25:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:25:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:25:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 11:25:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 11:25:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_ioctl [2022-07-21 11:25:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_ioctl [2022-07-21 11:25:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 11:25:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 11:25:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-21 11:25:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-21 11:25:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-21 11:25:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-21 11:25:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure hso_create_device [2022-07-21 11:25:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_create_device [2022-07-21 11:25:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-07-21 11:25:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-07-21 11:25:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:25:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:25:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_write_room [2022-07-21 11:25:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_write_room [2022-07-21 11:25:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-21 11:25:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-21 11:25:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:25:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_tx_timeout [2022-07-21 11:25:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_tx_timeout [2022-07-21 11:25:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure hso_urb_to_index [2022-07-21 11:25:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_urb_to_index [2022-07-21 11:25:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-21 11:25:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-21 11:25:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-21 11:25:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-21 11:25:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:25:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:25:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure set_serial_by_index [2022-07-21 11:25:35,576 INFO L138 BoogieDeclarations]: Found implementation of procedure set_serial_by_index [2022-07-21 11:25:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure hso_stop_net_device [2022-07-21 11:25:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_stop_net_device [2022-07-21 11:25:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:25:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_interface [2022-07-21 11:25:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_interface [2022-07-21 11:25:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:25:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure handle_usb_error [2022-07-21 11:25:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_usb_error [2022-07-21 11:25:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_start_xmit [2022-07-21 11:25:35,577 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_start_xmit [2022-07-21 11:25:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:25:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:25:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure hso_disconnect [2022-07-21 11:25:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_disconnect [2022-07-21 11:25:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_tiocmset [2022-07-21 11:25:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_tiocmset [2022-07-21 11:25:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_common_create [2022-07-21 11:25:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_common_create [2022-07-21 11:25:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:25:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:25:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-21 11:25:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-21 11:25:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-21 11:25:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-21 11:25:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure hso_log_port [2022-07-21 11:25:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_log_port [2022-07-21 11:25:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure hso_unthrottle_tasklet [2022-07-21 11:25:35,579 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_unthrottle_tasklet [2022-07-21 11:25:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-21 11:25:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-21 11:25:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-21 11:25:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-21 11:25:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-21 11:25:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-21 11:25:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-21 11:25:35,580 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-21 11:25:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_tiomget [2022-07-21 11:25:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_tiomget [2022-07-21 11:25:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-21 11:25:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-21 11:25:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 11:25:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 11:25:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:25:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:25:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-21 11:25:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-21 11:25:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_open [2022-07-21 11:25:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_open [2022-07-21 11:25:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_set [2022-07-21 11:25:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_set [2022-07-21 11:25:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:25:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:25:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure hso_start_net_device [2022-07-21 11:25:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_start_net_device [2022-07-21 11:25:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:25:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure hso_stop_serial_device [2022-07-21 11:25:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_stop_serial_device [2022-07-21 11:25:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-21 11:25:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-21 11:25:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:25:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:25:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-21 11:25:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-21 11:25:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure put_rxbuf_data_and_resubmit_ctrl_urb [2022-07-21 11:25:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure put_rxbuf_data_and_resubmit_ctrl_urb [2022-07-21 11:25:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-21 11:25:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-21 11:25:36,285 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:25:36,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:25:36,501 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:25:45,031 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:25:45,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:25:45,044 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 11:25:45,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:25:45 BoogieIcfgContainer [2022-07-21 11:25:45,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:25:45,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:25:45,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:25:45,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:25:45,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:25:32" (1/3) ... [2022-07-21 11:25:45,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e94c845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:25:45, skipping insertion in model container [2022-07-21 11:25:45,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:25:34" (2/3) ... [2022-07-21 11:25:45,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e94c845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:25:45, skipping insertion in model container [2022-07-21 11:25:45,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:25:45" (3/3) ... [2022-07-21 11:25:45,054 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2022-07-21 11:25:45,064 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:25:45,064 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:25:45,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:25:45,154 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49b9dd4d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@343e70a7 [2022-07-21 11:25:45,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:25:45,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 2120 states, 1527 states have (on average 1.3929273084479372) internal successors, (2127), 1566 states have internal predecessors, (2127), 479 states have call successors, (479), 113 states have call predecessors, (479), 112 states have return successors, (471), 466 states have call predecessors, (471), 471 states have call successors, (471) [2022-07-21 11:25:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-21 11:25:45,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:25:45,187 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-21 11:25:45,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:25:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:25:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1167061181, now seen corresponding path program 1 times [2022-07-21 11:25:45,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:25:45,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435035440] [2022-07-21 11:25:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:25:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:25:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:25:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:25:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:25:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:25:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:25:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:25:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:25:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:25:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:25:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:25:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:25:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:25:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:25:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:25:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-21 11:25:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:25:45,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435035440] [2022-07-21 11:25:45,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435035440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:25:45,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:25:45,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:25:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369781426] [2022-07-21 11:25:45,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:25:45,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:25:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:25:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:25:45,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:25:45,893 INFO L87 Difference]: Start difference. First operand has 2120 states, 1527 states have (on average 1.3929273084479372) internal successors, (2127), 1566 states have internal predecessors, (2127), 479 states have call successors, (479), 113 states have call predecessors, (479), 112 states have return successors, (471), 466 states have call predecessors, (471), 471 states have call successors, (471) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 11:25:48,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:25:50,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:25:53,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:25:57,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:25:59,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:03,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:06,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:26:12,182 INFO L93 Difference]: Finished difference Result 6605 states and 9880 transitions. [2022-07-21 11:26:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:26:12,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2022-07-21 11:26:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:26:12,291 INFO L225 Difference]: With dead ends: 6605 [2022-07-21 11:26:12,292 INFO L226 Difference]: Without dead ends: 4444 [2022-07-21 11:26:12,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:26:12,309 INFO L413 NwaCegarLoop]: 3280 mSDtfsCounter, 5326 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 4259 mSolverCounterSat, 2617 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5594 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 6881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2617 IncrementalHoareTripleChecker+Valid, 4259 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:26:12,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5594 Valid, 7615 Invalid, 6881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2617 Valid, 4259 Invalid, 5 Unknown, 0 Unchecked, 25.8s Time] [2022-07-21 11:26:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2022-07-21 11:26:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3732. [2022-07-21 11:26:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 2701 states have (on average 1.371714179933358) internal successors, (3705), 2754 states have internal predecessors, (3705), 816 states have call successors, (816), 213 states have call predecessors, (816), 214 states have return successors, (821), 806 states have call predecessors, (821), 815 states have call successors, (821) [2022-07-21 11:26:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 5342 transitions. [2022-07-21 11:26:12,517 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 5342 transitions. Word has length 94 [2022-07-21 11:26:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:26:12,517 INFO L495 AbstractCegarLoop]: Abstraction has 3732 states and 5342 transitions. [2022-07-21 11:26:12,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 11:26:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 5342 transitions. [2022-07-21 11:26:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-21 11:26:12,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:26:12,525 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-21 11:26:12,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:26:12,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:26:12,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:26:12,526 INFO L85 PathProgramCache]: Analyzing trace with hash 270868088, now seen corresponding path program 1 times [2022-07-21 11:26:12,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:26:12,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349995314] [2022-07-21 11:26:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:26:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:26:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:26:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:26:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:26:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:26:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:26:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:26:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:26:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:26:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:26:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:26:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:26:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:26:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:26:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 11:26:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 11:26:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:26:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 11:26:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 11:26:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 11:26:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 11:26:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-21 11:26:12,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:26:12,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349995314] [2022-07-21 11:26:12,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349995314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:26:12,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:26:12,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:26:12,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157545401] [2022-07-21 11:26:12,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:26:12,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:26:12,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:26:12,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:26:12,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:26:12,943 INFO L87 Difference]: Start difference. First operand 3732 states and 5342 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:26:15,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:18,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:20,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:29,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:31,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:26:36,850 INFO L93 Difference]: Finished difference Result 13142 states and 19159 transitions. [2022-07-21 11:26:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:26:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 136 [2022-07-21 11:26:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:26:36,892 INFO L225 Difference]: With dead ends: 13142 [2022-07-21 11:26:36,893 INFO L226 Difference]: Without dead ends: 9437 [2022-07-21 11:26:36,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:26:36,909 INFO L413 NwaCegarLoop]: 2923 mSDtfsCounter, 8653 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 6357 mSolverCounterSat, 5131 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9097 SdHoareTripleChecker+Valid, 7202 SdHoareTripleChecker+Invalid, 11493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5131 IncrementalHoareTripleChecker+Valid, 6357 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:26:36,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9097 Valid, 7202 Invalid, 11493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5131 Valid, 6357 Invalid, 5 Unknown, 0 Unchecked, 23.3s Time] [2022-07-21 11:26:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2022-07-21 11:26:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 7508. [2022-07-21 11:26:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7508 states, 5427 states have (on average 1.3681592039800996) internal successors, (7425), 5540 states have internal predecessors, (7425), 1625 states have call successors, (1625), 425 states have call predecessors, (1625), 455 states have return successors, (1727), 1619 states have call predecessors, (1727), 1624 states have call successors, (1727) [2022-07-21 11:26:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7508 states to 7508 states and 10777 transitions. [2022-07-21 11:26:37,177 INFO L78 Accepts]: Start accepts. Automaton has 7508 states and 10777 transitions. Word has length 136 [2022-07-21 11:26:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:26:37,180 INFO L495 AbstractCegarLoop]: Abstraction has 7508 states and 10777 transitions. [2022-07-21 11:26:37,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:26:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7508 states and 10777 transitions. [2022-07-21 11:26:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 11:26:37,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:26:37,189 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-21 11:26:37,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:26:37,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:26:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:26:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1739517869, now seen corresponding path program 1 times [2022-07-21 11:26:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:26:37,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175793092] [2022-07-21 11:26:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:26:37,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:26:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:26:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:26:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:26:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:26:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:26:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:26:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:26:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:26:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:26:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:26:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:26:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:26:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 11:26:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 11:26:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:26:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 11:26:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:26:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 11:26:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 11:26:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:26:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-21 11:26:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:26:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175793092] [2022-07-21 11:26:37,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175793092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:26:37,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:26:37,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:26:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380378775] [2022-07-21 11:26:37,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:26:37,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:26:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:26:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:26:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:26:37,557 INFO L87 Difference]: Start difference. First operand 7508 states and 10777 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:26:39,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:41,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:46,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:48,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:50,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:26:57,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:27:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:03,573 INFO L93 Difference]: Finished difference Result 21808 states and 31618 transitions. [2022-07-21 11:27:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:27:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 148 [2022-07-21 11:27:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:03,651 INFO L225 Difference]: With dead ends: 21808 [2022-07-21 11:27:03,651 INFO L226 Difference]: Without dead ends: 14327 [2022-07-21 11:27:03,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:27:03,692 INFO L413 NwaCegarLoop]: 3015 mSDtfsCounter, 7830 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 6253 mSolverCounterSat, 4759 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8197 SdHoareTripleChecker+Valid, 7422 SdHoareTripleChecker+Invalid, 11017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4759 IncrementalHoareTripleChecker+Valid, 6253 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:03,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8197 Valid, 7422 Invalid, 11017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4759 Valid, 6253 Invalid, 5 Unknown, 0 Unchecked, 25.3s Time] [2022-07-21 11:27:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14327 states. [2022-07-21 11:27:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14327 to 11501. [2022-07-21 11:27:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11501 states, 8327 states have (on average 1.364356911252552) internal successors, (11361), 8500 states have internal predecessors, (11361), 2444 states have call successors, (2444), 682 states have call predecessors, (2444), 729 states have return successors, (2597), 2436 states have call predecessors, (2597), 2443 states have call successors, (2597) [2022-07-21 11:27:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11501 states to 11501 states and 16402 transitions. [2022-07-21 11:27:04,210 INFO L78 Accepts]: Start accepts. Automaton has 11501 states and 16402 transitions. Word has length 148 [2022-07-21 11:27:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:04,212 INFO L495 AbstractCegarLoop]: Abstraction has 11501 states and 16402 transitions. [2022-07-21 11:27:04,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:27:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 11501 states and 16402 transitions. [2022-07-21 11:27:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 11:27:04,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:04,215 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-07-21 11:27:04,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:27:04,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1988760036, now seen corresponding path program 1 times [2022-07-21 11:27:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:04,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529982306] [2022-07-21 11:27:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:04,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 11:27:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:27:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 11:27:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 11:27:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-21 11:27:04,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:04,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529982306] [2022-07-21 11:27:04,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529982306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:04,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:27:04,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:27:04,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966283444] [2022-07-21 11:27:04,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:04,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:27:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:27:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:27:04,613 INFO L87 Difference]: Start difference. First operand 11501 states and 16402 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:27:06,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:27:10,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:27:17,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:27:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:21,682 INFO L93 Difference]: Finished difference Result 25932 states and 37533 transitions. [2022-07-21 11:27:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:27:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 154 [2022-07-21 11:27:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:21,746 INFO L225 Difference]: With dead ends: 25932 [2022-07-21 11:27:21,746 INFO L226 Difference]: Without dead ends: 14471 [2022-07-21 11:27:21,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:27:21,787 INFO L413 NwaCegarLoop]: 2656 mSDtfsCounter, 3023 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 3867 mSolverCounterSat, 2191 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3174 SdHoareTripleChecker+Valid, 6614 SdHoareTripleChecker+Invalid, 6061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2191 IncrementalHoareTripleChecker+Valid, 3867 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:21,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3174 Valid, 6614 Invalid, 6061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2191 Valid, 3867 Invalid, 3 Unknown, 0 Unchecked, 16.5s Time] [2022-07-21 11:27:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14471 states. [2022-07-21 11:27:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14471 to 12016. [2022-07-21 11:27:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12016 states, 8695 states have (on average 1.363772282921219) internal successors, (11858), 8874 states have internal predecessors, (11858), 2561 states have call successors, (2561), 682 states have call predecessors, (2561), 759 states have return successors, (2822), 2589 states have call predecessors, (2822), 2560 states have call successors, (2822) [2022-07-21 11:27:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12016 states to 12016 states and 17241 transitions. [2022-07-21 11:27:22,351 INFO L78 Accepts]: Start accepts. Automaton has 12016 states and 17241 transitions. Word has length 154 [2022-07-21 11:27:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:22,351 INFO L495 AbstractCegarLoop]: Abstraction has 12016 states and 17241 transitions. [2022-07-21 11:27:22,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:27:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12016 states and 17241 transitions. [2022-07-21 11:27:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 11:27:22,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:22,354 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-07-21 11:27:22,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:27:22,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:22,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1680380448, now seen corresponding path program 1 times [2022-07-21 11:27:22,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:22,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952062059] [2022-07-21 11:27:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:22,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:27:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-21 11:27:22,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:22,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952062059] [2022-07-21 11:27:22,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952062059] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:22,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789657811] [2022-07-21 11:27:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:22,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:22,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:22,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:22,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:27:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:24,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 6207 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:27:24,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-21 11:27:24,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:24,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789657811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:24,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:24,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 11:27:24,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579877067] [2022-07-21 11:27:24,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:24,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:24,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:27:24,273 INFO L87 Difference]: Start difference. First operand 12016 states and 17241 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:27:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:24,627 INFO L93 Difference]: Finished difference Result 23992 states and 34427 transitions. [2022-07-21 11:27:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2022-07-21 11:27:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:24,674 INFO L225 Difference]: With dead ends: 23992 [2022-07-21 11:27:24,674 INFO L226 Difference]: Without dead ends: 12016 [2022-07-21 11:27:24,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:27:24,709 INFO L413 NwaCegarLoop]: 3015 mSDtfsCounter, 2929 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:24,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2929 Valid, 3015 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:27:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2022-07-21 11:27:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 12016. [2022-07-21 11:27:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12016 states, 8695 states have (on average 1.3628522139160437) internal successors, (11850), 8874 states have internal predecessors, (11850), 2561 states have call successors, (2561), 682 states have call predecessors, (2561), 759 states have return successors, (2822), 2589 states have call predecessors, (2822), 2560 states have call successors, (2822) [2022-07-21 11:27:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12016 states to 12016 states and 17233 transitions. [2022-07-21 11:27:25,083 INFO L78 Accepts]: Start accepts. Automaton has 12016 states and 17233 transitions. Word has length 156 [2022-07-21 11:27:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:25,085 INFO L495 AbstractCegarLoop]: Abstraction has 12016 states and 17233 transitions. [2022-07-21 11:27:25,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:27:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 12016 states and 17233 transitions. [2022-07-21 11:27:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 11:27:25,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:25,087 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-07-21 11:27:25,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 11:27:25,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:25,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:25,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash 769219682, now seen corresponding path program 1 times [2022-07-21 11:27:25,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:25,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303326405] [2022-07-21 11:27:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:25,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:27:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-21 11:27:25,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:25,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303326405] [2022-07-21 11:27:25,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303326405] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:25,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099458115] [2022-07-21 11:27:25,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:25,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:25,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:25,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 11:27:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:27,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 6196 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:27:27,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-21 11:27:27,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:27,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099458115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:27,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:27,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 11:27:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429390333] [2022-07-21 11:27:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:27,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:27,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:27,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:27:27,118 INFO L87 Difference]: Start difference. First operand 12016 states and 17233 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:27:27,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:27,511 INFO L93 Difference]: Finished difference Result 23996 states and 34415 transitions. [2022-07-21 11:27:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:27,515 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), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2022-07-21 11:27:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:27,554 INFO L225 Difference]: With dead ends: 23996 [2022-07-21 11:27:27,555 INFO L226 Difference]: Without dead ends: 12012 [2022-07-21 11:27:27,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:27:27,580 INFO L413 NwaCegarLoop]: 3016 mSDtfsCounter, 0 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6027 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:27,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6027 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:27:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12012 states. [2022-07-21 11:27:27,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12012 to 11966. [2022-07-21 11:27:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11966 states, 8657 states have (on average 1.3632898232644104) internal successors, (11802), 8838 states have internal predecessors, (11802), 2555 states have call successors, (2555), 676 states have call predecessors, (2555), 753 states have return successors, (2816), 2581 states have call predecessors, (2816), 2554 states have call successors, (2816) [2022-07-21 11:27:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11966 states to 11966 states and 17173 transitions. [2022-07-21 11:27:27,946 INFO L78 Accepts]: Start accepts. Automaton has 11966 states and 17173 transitions. Word has length 156 [2022-07-21 11:27:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:27,946 INFO L495 AbstractCegarLoop]: Abstraction has 11966 states and 17173 transitions. [2022-07-21 11:27:27,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:27:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 11966 states and 17173 transitions. [2022-07-21 11:27:27,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 11:27:27,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:27,951 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2022-07-21 11:27:27,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:27:28,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 11:27:28,160 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1938575962, now seen corresponding path program 1 times [2022-07-21 11:27:28,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:28,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2193503] [2022-07-21 11:27:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:28,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 11:27:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:27:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 11:27:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-21 11:27:28,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:28,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2193503] [2022-07-21 11:27:28,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2193503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:28,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198194330] [2022-07-21 11:27:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:28,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:28,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:28,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 11:27:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:30,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 6271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:27:30,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 11:27:30,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:30,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198194330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:30,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:30,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 11:27:30,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697294778] [2022-07-21 11:27:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:30,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:30,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:27:30,318 INFO L87 Difference]: Start difference. First operand 11966 states and 17173 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 11:27:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:30,550 INFO L93 Difference]: Finished difference Result 13932 states and 19613 transitions. [2022-07-21 11:27:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 169 [2022-07-21 11:27:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:30,610 INFO L225 Difference]: With dead ends: 13932 [2022-07-21 11:27:30,611 INFO L226 Difference]: Without dead ends: 13929 [2022-07-21 11:27:30,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:27:30,623 INFO L413 NwaCegarLoop]: 3190 mSDtfsCounter, 2364 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 4131 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:30,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 4131 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:27:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13929 states. [2022-07-21 11:27:31,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13929 to 13748. [2022-07-21 11:27:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13748 states, 9880 states have (on average 1.3466599190283401) internal successors, (13305), 10085 states have internal predecessors, (13305), 2894 states have call successors, (2894), 896 states have call predecessors, (2894), 973 states have return successors, (3156), 2914 states have call predecessors, (3156), 2893 states have call successors, (3156) [2022-07-21 11:27:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 19355 transitions. [2022-07-21 11:27:31,118 INFO L78 Accepts]: Start accepts. Automaton has 13748 states and 19355 transitions. Word has length 169 [2022-07-21 11:27:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:31,119 INFO L495 AbstractCegarLoop]: Abstraction has 13748 states and 19355 transitions. [2022-07-21 11:27:31,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 11:27:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13748 states and 19355 transitions. [2022-07-21 11:27:31,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 11:27:31,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:31,128 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-07-21 11:27:31,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:27:31,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:31,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2090437695, now seen corresponding path program 1 times [2022-07-21 11:27:31,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:31,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040926095] [2022-07-21 11:27:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 11:27:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 11:27:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:27:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 11:27:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 11:27:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 11:27:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 11:27:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-21 11:27:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:31,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040926095] [2022-07-21 11:27:31,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040926095] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:31,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286621051] [2022-07-21 11:27:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:31,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:31,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:31,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:31,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 11:27:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:33,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 4723 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:27:33,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-21 11:27:33,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:33,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286621051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:33,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:33,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 11:27:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854722956] [2022-07-21 11:27:33,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:33,069 INFO L87 Difference]: Start difference. First operand 13748 states and 19355 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 11:27:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:33,802 INFO L93 Difference]: Finished difference Result 35815 states and 50392 transitions. [2022-07-21 11:27:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:33,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 206 [2022-07-21 11:27:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:33,884 INFO L225 Difference]: With dead ends: 35815 [2022-07-21 11:27:33,884 INFO L226 Difference]: Without dead ends: 22107 [2022-07-21 11:27:33,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:33,928 INFO L413 NwaCegarLoop]: 3467 mSDtfsCounter, 2890 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 6240 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:33,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 6240 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:27:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22107 states. [2022-07-21 11:27:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22107 to 22058. [2022-07-21 11:27:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22058 states, 15895 states have (on average 1.3477194086190627) internal successors, (21422), 16227 states have internal predecessors, (21422), 4582 states have call successors, (4582), 1452 states have call predecessors, (4582), 1580 states have return successors, (4998), 4615 states have call predecessors, (4998), 4581 states have call successors, (4998) [2022-07-21 11:27:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22058 states to 22058 states and 31002 transitions. [2022-07-21 11:27:34,700 INFO L78 Accepts]: Start accepts. Automaton has 22058 states and 31002 transitions. Word has length 206 [2022-07-21 11:27:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:34,701 INFO L495 AbstractCegarLoop]: Abstraction has 22058 states and 31002 transitions. [2022-07-21 11:27:34,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 11:27:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 22058 states and 31002 transitions. [2022-07-21 11:27:34,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 11:27:34,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:34,720 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 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] [2022-07-21 11:27:34,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 11:27:34,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:34,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:34,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:34,934 INFO L85 PathProgramCache]: Analyzing trace with hash -533308836, now seen corresponding path program 1 times [2022-07-21 11:27:34,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:34,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188232503] [2022-07-21 11:27:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:34,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 11:27:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:27:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 11:27:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 11:27:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 11:27:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 11:27:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 11:27:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 11:27:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-21 11:27:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-21 11:27:35,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:35,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188232503] [2022-07-21 11:27:35,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188232503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:35,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678182694] [2022-07-21 11:27:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:35,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:35,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:35,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:35,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 11:27:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:37,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 6762 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:27:37,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-21 11:27:37,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:37,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678182694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:37,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:37,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 11:27:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945954935] [2022-07-21 11:27:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:37,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:37,185 INFO L87 Difference]: Start difference. First operand 22058 states and 31002 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-21 11:27:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:38,103 INFO L93 Difference]: Finished difference Result 55274 states and 77533 transitions. [2022-07-21 11:27:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 232 [2022-07-21 11:27:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:38,226 INFO L225 Difference]: With dead ends: 55274 [2022-07-21 11:27:38,227 INFO L226 Difference]: Without dead ends: 33256 [2022-07-21 11:27:38,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:38,289 INFO L413 NwaCegarLoop]: 3779 mSDtfsCounter, 2931 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2931 SdHoareTripleChecker+Valid, 6146 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:38,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2931 Valid, 6146 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:27:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33256 states. [2022-07-21 11:27:39,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33256 to 33223. [2022-07-21 11:27:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33223 states, 23949 states have (on average 1.3459852185895027) internal successors, (32235), 24455 states have internal predecessors, (32235), 6839 states have call successors, (6839), 2236 states have call predecessors, (6839), 2434 states have return successors, (7450), 6892 states have call predecessors, (7450), 6838 states have call successors, (7450) [2022-07-21 11:27:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33223 states to 33223 states and 46524 transitions. [2022-07-21 11:27:39,621 INFO L78 Accepts]: Start accepts. Automaton has 33223 states and 46524 transitions. Word has length 232 [2022-07-21 11:27:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:39,622 INFO L495 AbstractCegarLoop]: Abstraction has 33223 states and 46524 transitions. [2022-07-21 11:27:39,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-21 11:27:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33223 states and 46524 transitions. [2022-07-21 11:27:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-21 11:27:39,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:39,756 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 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] [2022-07-21 11:27:39,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 11:27:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:39,977 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -678524870, now seen corresponding path program 1 times [2022-07-21 11:27:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:39,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154450959] [2022-07-21 11:27:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 11:27:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:27:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:27:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 11:27:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-21 11:27:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:27:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:27:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-21 11:27:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-21 11:27:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-07-21 11:27:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154450959] [2022-07-21 11:27:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154450959] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355915123] [2022-07-21 11:27:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:40,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:40,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:40,410 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:40,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 11:27:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:42,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 6835 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:27:42,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-07-21 11:27:42,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:42,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355915123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:42,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:42,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 11:27:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722981491] [2022-07-21 11:27:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:42,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:42,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:42,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:42,111 INFO L87 Difference]: Start difference. First operand 33223 states and 46524 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 11:27:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:43,538 INFO L93 Difference]: Finished difference Result 77598 states and 108571 transitions. [2022-07-21 11:27:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:43,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 240 [2022-07-21 11:27:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:43,685 INFO L225 Difference]: With dead ends: 77598 [2022-07-21 11:27:43,686 INFO L226 Difference]: Without dead ends: 44415 [2022-07-21 11:27:43,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:43,763 INFO L413 NwaCegarLoop]: 3687 mSDtfsCounter, 2985 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2985 SdHoareTripleChecker+Valid, 6023 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:43,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2985 Valid, 6023 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:27:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44415 states. [2022-07-21 11:27:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44415 to 44388. [2022-07-21 11:27:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44388 states, 32003 states have (on average 1.3454988594819235) internal successors, (43060), 32683 states have internal predecessors, (43060), 9096 states have call successors, (9096), 3020 states have call predecessors, (9096), 3288 states have return successors, (9902), 9169 states have call predecessors, (9902), 9095 states have call successors, (9902) [2022-07-21 11:27:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44388 states to 44388 states and 62058 transitions. [2022-07-21 11:27:45,499 INFO L78 Accepts]: Start accepts. Automaton has 44388 states and 62058 transitions. Word has length 240 [2022-07-21 11:27:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:45,499 INFO L495 AbstractCegarLoop]: Abstraction has 44388 states and 62058 transitions. [2022-07-21 11:27:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 11:27:45,500 INFO L276 IsEmpty]: Start isEmpty. Operand 44388 states and 62058 transitions. [2022-07-21 11:27:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-21 11:27:45,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:45,530 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 11:27:45,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 11:27:45,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:45,748 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash -929503317, now seen corresponding path program 1 times [2022-07-21 11:27:45,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:45,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325545844] [2022-07-21 11:27:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:45,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 11:27:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:27:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 11:27:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 11:27:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 11:27:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 11:27:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-21 11:27:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-21 11:27:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-21 11:27:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-07-21 11:27:46,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325545844] [2022-07-21 11:27:46,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325545844] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524734371] [2022-07-21 11:27:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:46,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:46,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:46,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:46,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 11:27:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:47,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 6890 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:27:47,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-07-21 11:27:48,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:48,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524734371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:48,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:48,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 11:27:48,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834771636] [2022-07-21 11:27:48,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:48,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:48,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:48,012 INFO L87 Difference]: Start difference. First operand 44388 states and 62058 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 11:27:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:49,583 INFO L93 Difference]: Finished difference Result 94456 states and 133281 transitions. [2022-07-21 11:27:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:49,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 255 [2022-07-21 11:27:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:49,748 INFO L225 Difference]: With dead ends: 94456 [2022-07-21 11:27:49,748 INFO L226 Difference]: Without dead ends: 50108 [2022-07-21 11:27:49,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:49,845 INFO L413 NwaCegarLoop]: 3720 mSDtfsCounter, 606 mSDsluCounter, 3099 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 6819 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:49,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 6819 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:27:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50108 states. [2022-07-21 11:27:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50108 to 44400. [2022-07-21 11:27:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44400 states, 32015 states have (on average 1.3453693581133843) internal successors, (43072), 32695 states have internal predecessors, (43072), 9096 states have call successors, (9096), 3020 states have call predecessors, (9096), 3288 states have return successors, (9902), 9169 states have call predecessors, (9902), 9095 states have call successors, (9902) [2022-07-21 11:27:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44400 states to 44400 states and 62070 transitions. [2022-07-21 11:27:51,665 INFO L78 Accepts]: Start accepts. Automaton has 44400 states and 62070 transitions. Word has length 255 [2022-07-21 11:27:51,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:51,668 INFO L495 AbstractCegarLoop]: Abstraction has 44400 states and 62070 transitions. [2022-07-21 11:27:51,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 11:27:51,668 INFO L276 IsEmpty]: Start isEmpty. Operand 44400 states and 62070 transitions. [2022-07-21 11:27:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-21 11:27:51,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:51,698 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:27:51,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 11:27:51,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:51,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:51,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash -984501702, now seen corresponding path program 1 times [2022-07-21 11:27:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:51,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686378419] [2022-07-21 11:27:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 11:27:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:27:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 11:27:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 11:27:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:27:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 11:27:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 11:27:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-21 11:27:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 11:27:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 11:27:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-21 11:27:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-07-21 11:27:52,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:52,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686378419] [2022-07-21 11:27:52,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686378419] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:52,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100813664] [2022-07-21 11:27:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:52,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:52,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:52,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:52,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 11:27:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:53,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 4961 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:27:53,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-07-21 11:27:53,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:27:53,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100813664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:27:53,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:27:53,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-07-21 11:27:53,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024970378] [2022-07-21 11:27:53,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:27:53,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:27:53,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:27:53,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:27:53,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:53,968 INFO L87 Difference]: Start difference. First operand 44400 states and 62070 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 11:27:55,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:27:55,611 INFO L93 Difference]: Finished difference Result 88716 states and 125547 transitions. [2022-07-21 11:27:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:27:55,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 257 [2022-07-21 11:27:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:27:55,756 INFO L225 Difference]: With dead ends: 88716 [2022-07-21 11:27:55,757 INFO L226 Difference]: Without dead ends: 44356 [2022-07-21 11:27:55,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:27:55,861 INFO L413 NwaCegarLoop]: 2946 mSDtfsCounter, 2843 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:27:55,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2843 Valid, 2946 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:27:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44356 states. [2022-07-21 11:27:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44356 to 44356. [2022-07-21 11:27:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44356 states, 31971 states have (on average 1.321416283506928) internal successors, (42247), 32651 states have internal predecessors, (42247), 9096 states have call successors, (9096), 3020 states have call predecessors, (9096), 3288 states have return successors, (9902), 9169 states have call predecessors, (9902), 9095 states have call successors, (9902) [2022-07-21 11:27:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44356 states to 44356 states and 61245 transitions. [2022-07-21 11:27:57,748 INFO L78 Accepts]: Start accepts. Automaton has 44356 states and 61245 transitions. Word has length 257 [2022-07-21 11:27:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:27:57,749 INFO L495 AbstractCegarLoop]: Abstraction has 44356 states and 61245 transitions. [2022-07-21 11:27:57,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 11:27:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 44356 states and 61245 transitions. [2022-07-21 11:27:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-21 11:27:57,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:27:57,775 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:27:57,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 11:27:57,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 11:27:57,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:27:57,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:27:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash -957436100, now seen corresponding path program 1 times [2022-07-21 11:27:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:27:57,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952922732] [2022-07-21 11:27:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:57,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:27:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:27:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:27:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:27:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:27:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:27:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:27:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:27:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:27:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:27:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:27:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:27:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:27:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:27:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:27:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:27:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:27:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 11:27:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:27:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:27:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 11:27:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 11:27:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:27:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 11:27:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 11:27:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:27:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-21 11:27:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 11:27:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 11:27:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-21 11:27:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-07-21 11:27:58,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:27:58,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952922732] [2022-07-21 11:27:58,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952922732] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:27:58,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585268594] [2022-07-21 11:27:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:27:58,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:27:58,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:27:58,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:27:58,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 11:27:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:27:59,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 4962 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:27:59,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:27:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-21 11:27:59,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:28:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-07-21 11:28:00,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585268594] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:28:00,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:28:00,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-21 11:28:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111460958] [2022-07-21 11:28:00,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:28:00,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:28:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:28:00,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:28:00,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:28:00,092 INFO L87 Difference]: Start difference. First operand 44356 states and 61245 transitions. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (73), 6 states have call predecessors, (73), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-21 11:28:02,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:04,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:07,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:28:18,224 INFO L93 Difference]: Finished difference Result 103499 states and 145291 transitions. [2022-07-21 11:28:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:28:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (73), 6 states have call predecessors, (73), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 257 [2022-07-21 11:28:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:28:18,441 INFO L225 Difference]: With dead ends: 103499 [2022-07-21 11:28:18,441 INFO L226 Difference]: Without dead ends: 59183 [2022-07-21 11:28:18,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:28:18,555 INFO L413 NwaCegarLoop]: 2563 mSDtfsCounter, 3693 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 5968 mSolverCounterSat, 2640 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3853 SdHoareTripleChecker+Valid, 7565 SdHoareTripleChecker+Invalid, 8611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2640 IncrementalHoareTripleChecker+Valid, 5968 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:28:18,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3853 Valid, 7565 Invalid, 8611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2640 Valid, 5968 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2022-07-21 11:28:18,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59183 states. [2022-07-21 11:28:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59183 to 44766. [2022-07-21 11:28:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44766 states, 32302 states have (on average 1.3201659339978948) internal successors, (42644), 33031 states have internal predecessors, (42644), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3337 states have return successors, (9987), 9199 states have call predecessors, (9987), 9125 states have call successors, (9987) [2022-07-21 11:28:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44766 states to 44766 states and 61757 transitions. [2022-07-21 11:28:20,530 INFO L78 Accepts]: Start accepts. Automaton has 44766 states and 61757 transitions. Word has length 257 [2022-07-21 11:28:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:28:20,531 INFO L495 AbstractCegarLoop]: Abstraction has 44766 states and 61757 transitions. [2022-07-21 11:28:20,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (73), 6 states have call predecessors, (73), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-21 11:28:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 44766 states and 61757 transitions. [2022-07-21 11:28:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-21 11:28:20,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:28:20,552 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:28:20,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 11:28:20,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 11:28:20,761 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:28:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:28:20,762 INFO L85 PathProgramCache]: Analyzing trace with hash -722174520, now seen corresponding path program 2 times [2022-07-21 11:28:20,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:28:20,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817558037] [2022-07-21 11:28:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:28:20,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:28:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:28:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:28:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:28:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:28:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:28:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:28:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:28:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:28:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:28:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:28:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:28:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:28:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:28:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:28:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 11:28:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:28:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:28:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:28:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 11:28:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 11:28:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 11:28:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:28:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:28:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 11:28:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 11:28:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-21 11:28:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:28:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-21 11:28:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-21 11:28:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 11:28:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 11:28:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 11:28:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:28:21,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817558037] [2022-07-21 11:28:21,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817558037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:28:21,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:28:21,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:28:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142405076] [2022-07-21 11:28:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:28:21,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:28:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:28:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:28:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:28:21,165 INFO L87 Difference]: Start difference. First operand 44766 states and 61757 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 11:28:23,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:25,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:28,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:28:41,287 INFO L93 Difference]: Finished difference Result 103925 states and 145747 transitions. [2022-07-21 11:28:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:28:41,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 263 [2022-07-21 11:28:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:28:41,521 INFO L225 Difference]: With dead ends: 103925 [2022-07-21 11:28:41,521 INFO L226 Difference]: Without dead ends: 59183 [2022-07-21 11:28:41,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:28:41,635 INFO L413 NwaCegarLoop]: 2556 mSDtfsCounter, 3689 mSDsluCounter, 6441 mSDsCounter, 0 mSdLazyCounter, 7713 mSolverCounterSat, 2643 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 8997 SdHoareTripleChecker+Invalid, 10359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2643 IncrementalHoareTripleChecker+Valid, 7713 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:28:41,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3849 Valid, 8997 Invalid, 10359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2643 Valid, 7713 Invalid, 3 Unknown, 0 Unchecked, 17.8s Time] [2022-07-21 11:28:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59183 states. [2022-07-21 11:28:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59183 to 44766. [2022-07-21 11:28:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44766 states, 32302 states have (on average 1.3194229459476194) internal successors, (42620), 33031 states have internal predecessors, (42620), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3337 states have return successors, (9987), 9199 states have call predecessors, (9987), 9125 states have call successors, (9987) [2022-07-21 11:28:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44766 states to 44766 states and 61733 transitions. [2022-07-21 11:28:43,582 INFO L78 Accepts]: Start accepts. Automaton has 44766 states and 61733 transitions. Word has length 263 [2022-07-21 11:28:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:28:43,582 INFO L495 AbstractCegarLoop]: Abstraction has 44766 states and 61733 transitions. [2022-07-21 11:28:43,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 11:28:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 44766 states and 61733 transitions. [2022-07-21 11:28:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-21 11:28:43,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:28:43,774 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 3, 3, 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, 1, 1] [2022-07-21 11:28:43,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 11:28:43,775 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:28:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:28:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1465196128, now seen corresponding path program 1 times [2022-07-21 11:28:43,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:28:43,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518107529] [2022-07-21 11:28:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:28:43,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:28:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:28:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:28:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:28:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:28:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:28:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:28:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:28:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:28:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:28:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:28:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:28:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:28:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:28:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:28:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 11:28:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:28:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:28:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 11:28:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:28:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:28:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:28:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 11:28:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 11:28:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:28:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 11:28:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 11:28:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-21 11:28:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-21 11:28:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-21 11:28:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:28:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-07-21 11:28:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:28:44,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518107529] [2022-07-21 11:28:44,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518107529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:28:44,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:28:44,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:28:44,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457604176] [2022-07-21 11:28:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:28:44,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:28:44,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:28:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:28:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:28:44,261 INFO L87 Difference]: Start difference. First operand 44766 states and 61733 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 11:28:46,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:48,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:51,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:28:54,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:29:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:29:04,314 INFO L93 Difference]: Finished difference Result 104019 states and 146323 transitions. [2022-07-21 11:29:04,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 11:29:04,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 265 [2022-07-21 11:29:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:29:04,539 INFO L225 Difference]: With dead ends: 104019 [2022-07-21 11:29:04,539 INFO L226 Difference]: Without dead ends: 59293 [2022-07-21 11:29:04,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:29:04,650 INFO L413 NwaCegarLoop]: 2559 mSDtfsCounter, 3686 mSDsluCounter, 4992 mSDsCounter, 0 mSdLazyCounter, 5941 mSolverCounterSat, 2634 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3857 SdHoareTripleChecker+Valid, 7551 SdHoareTripleChecker+Invalid, 8578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2634 IncrementalHoareTripleChecker+Valid, 5941 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:29:04,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3857 Valid, 7551 Invalid, 8578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2634 Valid, 5941 Invalid, 3 Unknown, 0 Unchecked, 17.6s Time] [2022-07-21 11:29:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59293 states. [2022-07-21 11:29:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59293 to 44799. [2022-07-21 11:29:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44799 states, 32335 states have (on average 1.31909695376527) internal successors, (42653), 33064 states have internal predecessors, (42653), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3337 states have return successors, (9987), 9199 states have call predecessors, (9987), 9125 states have call successors, (9987) [2022-07-21 11:29:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44799 states to 44799 states and 61766 transitions. [2022-07-21 11:29:06,748 INFO L78 Accepts]: Start accepts. Automaton has 44799 states and 61766 transitions. Word has length 265 [2022-07-21 11:29:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:29:06,749 INFO L495 AbstractCegarLoop]: Abstraction has 44799 states and 61766 transitions. [2022-07-21 11:29:06,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 11:29:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 44799 states and 61766 transitions. [2022-07-21 11:29:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-21 11:29:06,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:29:06,770 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 3, 3, 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, 1, 1] [2022-07-21 11:29:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 11:29:06,770 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:29:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:29:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -411867102, now seen corresponding path program 1 times [2022-07-21 11:29:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:29:06,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593479786] [2022-07-21 11:29:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:29:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:29:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:29:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:29:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:29:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:29:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:29:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:29:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:29:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:29:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:29:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:29:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:29:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:29:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:29:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:29:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 11:29:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:29:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:29:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 11:29:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:29:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:29:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:29:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 11:29:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 11:29:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:29:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 11:29:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 11:29:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-21 11:29:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-21 11:29:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-21 11:29:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-21 11:29:07,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:29:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593479786] [2022-07-21 11:29:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593479786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:29:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178489918] [2022-07-21 11:29:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:29:07,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:29:07,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:29:07,368 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:29:07,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 11:29:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:29:09,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 6997 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 11:29:09,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:29:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 124 proven. 16 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-07-21 11:29:09,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:29:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-21 11:29:09,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178489918] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:29:09,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:29:09,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 18 [2022-07-21 11:29:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025647084] [2022-07-21 11:29:09,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:29:09,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 11:29:09,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:29:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 11:29:09,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-07-21 11:29:09,570 INFO L87 Difference]: Start difference. First operand 44799 states and 61766 transitions. Second operand has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 13 states have internal predecessors, (203), 2 states have call successors, (71), 7 states have call predecessors, (71), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-07-21 11:29:11,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:29:15,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:29:19,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:29:21,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:29:24,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []