./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.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 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:17:46,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:17:46,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:17:46,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:17:46,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:17:46,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:17:46,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:17:46,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:17:46,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:17:46,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:17:46,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:17:46,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:17:46,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:17:46,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:17:46,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:17:46,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:17:46,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:17:46,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:17:46,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:17:46,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:17:46,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:17:46,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:17:46,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:17:46,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:17:46,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:17:46,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:17:46,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:17:46,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:17:46,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:17:46,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:17:46,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:17:46,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:17:46,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:17:46,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:17:46,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:17:46,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:17:46,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:17:46,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:17:46,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:17:46,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:17:46,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:17:46,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:17:46,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:17:46,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:17:46,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:17:46,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:17:46,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:17:46,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:17:46,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:17:46,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:17:46,928 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:17:46,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:17:46,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:17:46,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:17:46,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:17:46,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:17:46,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:17:46,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:17:46,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:17:46,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:17:46,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:17:46,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:17:46,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:17:46,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:17:46,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:17:46,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:17:46,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:17:46,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:17:46,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:17:46,933 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:17:46,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:17:46,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:17:46,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:17:46,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d [2021-11-17 00:17:47,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:17:47,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:17:47,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:17:47,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:17:47,190 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:17:47,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-17 00:17:47,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76709f6ff/bf0ac34193314f059c60d96d9f81b561/FLAGcc404633d [2021-11-17 00:17:47,993 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:17:47,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-17 00:17:48,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76709f6ff/bf0ac34193314f059c60d96d9f81b561/FLAGcc404633d [2021-11-17 00:17:48,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76709f6ff/bf0ac34193314f059c60d96d9f81b561 [2021-11-17 00:17:48,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:17:48,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:17:48,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:17:48,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:17:48,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:17:48,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:17:48" (1/1) ... [2021-11-17 00:17:48,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780acf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:48, skipping insertion in model container [2021-11-17 00:17:48,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:17:48" (1/1) ... [2021-11-17 00:17:48,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:17:48,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:17:49,539 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-17 00:17:50,666 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:17:50,797 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:17:50,925 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-17 00:17:51,229 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:17:51,368 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:17:51,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51 WrapperNode [2021-11-17 00:17:51,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:17:51,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:17:51,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:17:51,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:17:51,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,677 INFO L137 Inliner]: procedures = 318, calls = 3918, calls flagged for inlining = 135, calls inlined = 109, statements flattened = 6379 [2021-11-17 00:17:51,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:17:51,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:17:51,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:17:51,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:17:51,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:51,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:52,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:17:52,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:17:52,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:17:52,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:17:52,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (1/1) ... [2021-11-17 00:17:52,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:17:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:17:52,069 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) [2021-11-17 00:17:52,086 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 [2021-11-17 00:17:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2021-11-17 00:17:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2021-11-17 00:17:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-17 00:17:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-17 00:17:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2021-11-17 00:17:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2021-11-17 00:17:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2021-11-17 00:17:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2021-11-17 00:17:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2021-11-17 00:17:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2021-11-17 00:17:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:17:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:17:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2021-11-17 00:17:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2021-11-17 00:17:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-17 00:17:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-17 00:17:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2021-11-17 00:17:52,115 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2021-11-17 00:17:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 00:17:52,115 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 00:17:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2021-11-17 00:17:52,115 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2021-11-17 00:17:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:17:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:17:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-17 00:17:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-17 00:17:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2021-11-17 00:17:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2021-11-17 00:17:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2021-11-17 00:17:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2021-11-17 00:17:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2021-11-17 00:17:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2021-11-17 00:17:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure freeurbs [2021-11-17 00:17:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure freeurbs [2021-11-17 00:17:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_down [2021-11-17 00:17:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_down [2021-11-17 00:17:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:17:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:17:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2021-11-17 00:17:52,118 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2021-11-17 00:17:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-17 00:17:52,118 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-17 00:17:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 00:17:52,118 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 00:17:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2021-11-17 00:17:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2021-11-17 00:17:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:17:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:17:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_43 [2021-11-17 00:17:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_43 [2021-11-17 00:17:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-17 00:17:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-17 00:17:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2021-11-17 00:17:52,121 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2021-11-17 00:17:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-11-17 00:17:52,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-11-17 00:17:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-17 00:17:52,122 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-17 00:17:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_queue_reset_device [2021-11-17 00:17:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_queue_reset_device [2021-11-17 00:17:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 00:17:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 00:17:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-11-17 00:17:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-11-17 00:17:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-11-17 00:17:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-11-17 00:17:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2021-11-17 00:17:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2021-11-17 00:17:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-11-17 00:17:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-11-17 00:17:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_20 [2021-11-17 00:17:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_20 [2021-11-17 00:17:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2021-11-17 00:17:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2021-11-17 00:17:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_3 [2021-11-17 00:17:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_3 [2021-11-17 00:17:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:17:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-17 00:17:52,127 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-17 00:17:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure check_pending [2021-11-17 00:17:52,127 INFO L138 BoogieDeclarations]: Found implementation of procedure check_pending [2021-11-17 00:17:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-17 00:17:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:17:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-17 00:17:52,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-17 00:17:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-17 00:17:52,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-17 00:17:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure error_hangup [2021-11-17 00:17:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure error_hangup [2021-11-17 00:17:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_18 [2021-11-17 00:17:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_18 [2021-11-17 00:17:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2021-11-17 00:17:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2021-11-17 00:17:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_send_skb [2021-11-17 00:17:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_send_skb [2021-11-17 00:17:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2021-11-17 00:17:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2021-11-17 00:17:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 00:17:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 00:17:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2021-11-17 00:17:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2021-11-17 00:17:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:17:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure read_int_callback [2021-11-17 00:17:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure read_int_callback [2021-11-17 00:17:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-11-17 00:17:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-11-17 00:17:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:17:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-17 00:17:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-17 00:17:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure get_usb_statmsg [2021-11-17 00:17:52,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_usb_statmsg [2021-11-17 00:17:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-17 00:17:52,133 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-17 00:17:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure read_ctrl_callback [2021-11-17 00:17:52,133 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ctrl_callback [2021-11-17 00:17:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 00:17:52,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 00:17:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure complete_cb [2021-11-17 00:17:52,135 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_cb [2021-11-17 00:17:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-17 00:17:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-17 00:17:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure stopurbs [2021-11-17 00:17:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure stopurbs [2021-11-17 00:17:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:17:52,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:17:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2021-11-17 00:17:52,139 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2021-11-17 00:17:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 00:17:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 00:17:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2021-11-17 00:17:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2021-11-17 00:17:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-17 00:17:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-17 00:17:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-17 00:17:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-17 00:17:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2021-11-17 00:17:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2021-11-17 00:17:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:17:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure dump_urb [2021-11-17 00:17:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_urb [2021-11-17 00:17:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-17 00:17:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-17 00:17:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 00:17:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 00:17:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2021-11-17 00:17:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2021-11-17 00:17:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-17 00:17:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-17 00:17:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_4 [2021-11-17 00:17:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_4 [2021-11-17 00:17:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_hi_schedule [2021-11-17 00:17:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_hi_schedule [2021-11-17 00:17:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2021-11-17 00:17:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2021-11-17 00:17:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:17:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:17:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure get_usb_rcmsg [2021-11-17 00:17:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure get_usb_rcmsg [2021-11-17 00:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:17:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2021-11-17 00:17:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2021-11-17 00:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-17 00:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-17 00:17:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2021-11-17 00:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2021-11-17 00:17:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2021-11-17 00:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2021-11-17 00:17:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2021-11-17 00:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2021-11-17 00:17:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_input [2021-11-17 00:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_input [2021-11-17 00:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure write_command_callback [2021-11-17 00:17:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure write_command_callback [2021-11-17 00:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2021-11-17 00:17:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2021-11-17 00:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 00:17:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 00:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:17:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 00:17:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:17:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:17:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2021-11-17 00:17:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2021-11-17 00:17:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-17 00:17:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-17 00:17:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-17 00:17:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-17 00:17:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-17 00:17:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-17 00:17:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2021-11-17 00:17:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2021-11-17 00:17:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-17 00:17:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-17 00:17:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-17 00:17:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-17 00:17:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure update_basstate [2021-11-17 00:17:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure update_basstate [2021-11-17 00:17:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-17 00:17:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-17 00:17:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure write_ctrl_callback [2021-11-17 00:17:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ctrl_callback [2021-11-17 00:17:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure read_iso_callback [2021-11-17 00:17:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure read_iso_callback [2021-11-17 00:17:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_41 [2021-11-17 00:17:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_41 [2021-11-17 00:17:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-17 00:17:52,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-17 00:17:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-17 00:17:52,155 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-17 00:17:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:17:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2021-11-17 00:17:52,155 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2021-11-17 00:17:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2021-11-17 00:17:52,155 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2021-11-17 00:17:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-17 00:17:52,156 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-17 00:17:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:17:52,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:17:52,883 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:17:52,885 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:17:53,121 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:17:53,936 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-11-17 00:17:57,881 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:17:57,903 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:17:57,903 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 00:17:57,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:17:57 BoogieIcfgContainer [2021-11-17 00:17:57,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:17:57,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:17:57,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:17:57,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:17:57,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:17:48" (1/3) ... [2021-11-17 00:17:57,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da5edd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:17:57, skipping insertion in model container [2021-11-17 00:17:57,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:51" (2/3) ... [2021-11-17 00:17:57,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da5edd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:17:57, skipping insertion in model container [2021-11-17 00:17:57,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:17:57" (3/3) ... [2021-11-17 00:17:57,918 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-17 00:17:57,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:17:57,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:17:57,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:17:57,983 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 00:17:57,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:17:58,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 2085 states, 1440 states have (on average 1.3743055555555554) internal successors, (1979), 1515 states have internal predecessors, (1979), 541 states have call successors, (541), 104 states have call predecessors, (541), 102 states have return successors, (531), 502 states have call predecessors, (531), 531 states have call successors, (531) [2021-11-17 00:17:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-17 00:17:58,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:17:58,072 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:17:58,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:17:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:17:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash -670781513, now seen corresponding path program 1 times [2021-11-17 00:17:58,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:17:58,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999045844] [2021-11-17 00:17:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:17:58,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:17:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:17:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:17:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:17:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:17:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:17:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:17:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:17:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:17:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:17:59,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:17:59,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999045844] [2021-11-17 00:17:59,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999045844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:17:59,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:17:59,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:17:59,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825534458] [2021-11-17 00:17:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:17:59,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:17:59,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:17:59,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:17:59,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:17:59,085 INFO L87 Difference]: Start difference. First operand has 2085 states, 1440 states have (on average 1.3743055555555554) internal successors, (1979), 1515 states have internal predecessors, (1979), 541 states have call successors, (541), 104 states have call predecessors, (541), 102 states have return successors, (531), 502 states have call predecessors, (531), 531 states have call successors, (531) Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 00:18:01,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:03,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:04,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:18:22,897 INFO L93 Difference]: Finished difference Result 9256 states and 14100 transitions. [2021-11-17 00:18:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 00:18:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-11-17 00:18:22,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:18:22,967 INFO L225 Difference]: With dead ends: 9256 [2021-11-17 00:18:22,967 INFO L226 Difference]: Without dead ends: 7134 [2021-11-17 00:18:22,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:18:22,991 INFO L933 BasicCegarLoop]: 3509 mSDtfsCounter, 11280 mSDsluCounter, 11857 mSDsCounter, 0 mSdLazyCounter, 12646 mSolverCounterSat, 6106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11913 SdHoareTripleChecker+Valid, 15366 SdHoareTripleChecker+Invalid, 18753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6106 IncrementalHoareTripleChecker+Valid, 12646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:18:22,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11913 Valid, 15366 Invalid, 18753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6106 Valid, 12646 Invalid, 1 Unknown, 0 Unchecked, 22.7s Time] [2021-11-17 00:18:23,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-11-17 00:18:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 6003. [2021-11-17 00:18:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 4161 states have (on average 1.3703436673876472) internal successors, (5702), 4340 states have internal predecessors, (5702), 1541 states have call successors, (1541), 301 states have call predecessors, (1541), 300 states have return successors, (1536), 1449 states have call predecessors, (1536), 1536 states have call successors, (1536) [2021-11-17 00:18:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 8779 transitions. [2021-11-17 00:18:23,451 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 8779 transitions. Word has length 66 [2021-11-17 00:18:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:18:23,451 INFO L470 AbstractCegarLoop]: Abstraction has 6003 states and 8779 transitions. [2021-11-17 00:18:23,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 00:18:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 8779 transitions. [2021-11-17 00:18:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-17 00:18:23,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:18:23,463 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:18:23,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:18:23,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:18:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:18:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash -174989572, now seen corresponding path program 1 times [2021-11-17 00:18:23,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:18:23,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980973007] [2021-11-17 00:18:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:18:23,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:18:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:18:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:18:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:23,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:18:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:18:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:18:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:23,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:18:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:18:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:18:24,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:18:24,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980973007] [2021-11-17 00:18:24,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980973007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:18:24,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:18:24,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:18:24,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431315946] [2021-11-17 00:18:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:18:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:18:24,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:18:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:18:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:18:24,020 INFO L87 Difference]: Start difference. First operand 6003 states and 8779 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:18:26,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:28,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:30,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:18:43,121 INFO L93 Difference]: Finished difference Result 22292 states and 34407 transitions. [2021-11-17 00:18:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:18:43,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2021-11-17 00:18:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:18:43,265 INFO L225 Difference]: With dead ends: 22292 [2021-11-17 00:18:43,265 INFO L226 Difference]: Without dead ends: 16315 [2021-11-17 00:18:43,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:18:43,314 INFO L933 BasicCegarLoop]: 3207 mSDtfsCounter, 7296 mSDsluCounter, 6106 mSDsCounter, 0 mSdLazyCounter, 5995 mSolverCounterSat, 4766 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7691 SdHoareTripleChecker+Valid, 9313 SdHoareTripleChecker+Invalid, 10764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4766 IncrementalHoareTripleChecker+Valid, 5995 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:18:43,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7691 Valid, 9313 Invalid, 10764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4766 Valid, 5995 Invalid, 3 Unknown, 0 Unchecked, 18.3s Time] [2021-11-17 00:18:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16315 states. [2021-11-17 00:18:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16315 to 13400. [2021-11-17 00:18:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13400 states, 9271 states have (on average 1.358753101067846) internal successors, (12597), 9673 states have internal predecessors, (12597), 3367 states have call successors, (3367), 600 states have call predecessors, (3367), 761 states have return successors, (4245), 3329 states have call predecessors, (4245), 3362 states have call successors, (4245) [2021-11-17 00:18:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13400 states to 13400 states and 20209 transitions. [2021-11-17 00:18:44,186 INFO L78 Accepts]: Start accepts. Automaton has 13400 states and 20209 transitions. Word has length 69 [2021-11-17 00:18:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:18:44,187 INFO L470 AbstractCegarLoop]: Abstraction has 13400 states and 20209 transitions. [2021-11-17 00:18:44,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:18:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13400 states and 20209 transitions. [2021-11-17 00:18:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-17 00:18:44,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:18:44,193 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:18:44,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:18:44,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:18:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:18:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1130675884, now seen corresponding path program 1 times [2021-11-17 00:18:44,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:18:44,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165724639] [2021-11-17 00:18:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:18:44,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:18:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:18:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:18:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:18:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:18:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:18:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:18:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:18:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:18:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:18:44,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:18:44,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165724639] [2021-11-17 00:18:44,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165724639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:18:44,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:18:44,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:18:44,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468005663] [2021-11-17 00:18:44,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:18:44,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:18:44,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:18:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:18:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:18:44,847 INFO L87 Difference]: Start difference. First operand 13400 states and 20209 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:18:46,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:48,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:18:56,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:19:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:19:02,384 INFO L93 Difference]: Finished difference Result 45943 states and 72646 transitions. [2021-11-17 00:19:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:19:02,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2021-11-17 00:19:02,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:19:02,611 INFO L225 Difference]: With dead ends: 45943 [2021-11-17 00:19:02,611 INFO L226 Difference]: Without dead ends: 32569 [2021-11-17 00:19:02,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:19:02,724 INFO L933 BasicCegarLoop]: 3281 mSDtfsCounter, 7230 mSDsluCounter, 6067 mSDsCounter, 0 mSdLazyCounter, 6063 mSolverCounterSat, 4675 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7631 SdHoareTripleChecker+Valid, 9348 SdHoareTripleChecker+Invalid, 10740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4675 IncrementalHoareTripleChecker+Valid, 6063 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:19:02,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7631 Valid, 9348 Invalid, 10740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4675 Valid, 6063 Invalid, 2 Unknown, 0 Unchecked, 16.6s Time] [2021-11-17 00:19:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32569 states. [2021-11-17 00:19:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32569 to 28183. [2021-11-17 00:19:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28183 states, 19480 states have (on average 1.3529774127310061) internal successors, (26356), 20328 states have internal predecessors, (26356), 7019 states have call successors, (7019), 1198 states have call predecessors, (7019), 1683 states have return successors, (10164), 7089 states have call predecessors, (10164), 7014 states have call successors, (10164) [2021-11-17 00:19:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28183 states to 28183 states and 43539 transitions. [2021-11-17 00:19:04,481 INFO L78 Accepts]: Start accepts. Automaton has 28183 states and 43539 transitions. Word has length 70 [2021-11-17 00:19:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:19:04,482 INFO L470 AbstractCegarLoop]: Abstraction has 28183 states and 43539 transitions. [2021-11-17 00:19:04,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:19:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 28183 states and 43539 transitions. [2021-11-17 00:19:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-17 00:19:04,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:19:04,487 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:19:04,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 00:19:04,487 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:19:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:19:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash -692175617, now seen corresponding path program 1 times [2021-11-17 00:19:04,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:19:04,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998691453] [2021-11-17 00:19:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:19:04,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:19:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:19:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:19:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:19:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:19:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:19:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:19:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:19:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:19:04,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:19:04,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998691453] [2021-11-17 00:19:04,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998691453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:19:04,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:19:04,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:19:04,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694196346] [2021-11-17 00:19:04,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:19:04,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:19:04,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:19:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:19:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:19:04,857 INFO L87 Difference]: Start difference. First operand 28183 states and 43539 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:19:06,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:19:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:19:17,915 INFO L93 Difference]: Finished difference Result 32567 states and 50788 transitions. [2021-11-17 00:19:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:19:17,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2021-11-17 00:19:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:19:18,090 INFO L225 Difference]: With dead ends: 32567 [2021-11-17 00:19:18,091 INFO L226 Difference]: Without dead ends: 32564 [2021-11-17 00:19:18,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:19:18,119 INFO L933 BasicCegarLoop]: 3270 mSDtfsCounter, 8585 mSDsluCounter, 5243 mSDsCounter, 0 mSdLazyCounter, 4989 mSolverCounterSat, 6292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8989 SdHoareTripleChecker+Valid, 8513 SdHoareTripleChecker+Invalid, 11281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6292 IncrementalHoareTripleChecker+Valid, 4989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:19:18,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8989 Valid, 8513 Invalid, 11281 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6292 Valid, 4989 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2021-11-17 00:19:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32564 states. [2021-11-17 00:19:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32564 to 28184. [2021-11-17 00:19:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28184 states, 19481 states have (on average 1.3529592936707562) internal successors, (26357), 20329 states have internal predecessors, (26357), 7019 states have call successors, (7019), 1198 states have call predecessors, (7019), 1683 states have return successors, (10164), 7089 states have call predecessors, (10164), 7014 states have call successors, (10164) [2021-11-17 00:19:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28184 states to 28184 states and 43540 transitions. [2021-11-17 00:19:19,684 INFO L78 Accepts]: Start accepts. Automaton has 28184 states and 43540 transitions. Word has length 71 [2021-11-17 00:19:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:19:19,685 INFO L470 AbstractCegarLoop]: Abstraction has 28184 states and 43540 transitions. [2021-11-17 00:19:19,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:19:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 28184 states and 43540 transitions. [2021-11-17 00:19:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-17 00:19:19,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:19:19,689 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:19:19,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:19:19,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:19:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:19:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash 16435639, now seen corresponding path program 1 times [2021-11-17 00:19:19,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:19:19,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348235078] [2021-11-17 00:19:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:19:19,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:19:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:19:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:19:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:19:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:19:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:19:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:19:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:20,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:19:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:19:20,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:19:20,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348235078] [2021-11-17 00:19:20,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348235078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:19:20,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:19:20,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:19:20,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880518836] [2021-11-17 00:19:20,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:19:20,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:19:20,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:19:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:19:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:19:20,021 INFO L87 Difference]: Start difference. First operand 28184 states and 43540 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:19:22,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:19:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:19:29,234 INFO L93 Difference]: Finished difference Result 32563 states and 50784 transitions. [2021-11-17 00:19:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:19:29,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2021-11-17 00:19:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:19:29,455 INFO L225 Difference]: With dead ends: 32563 [2021-11-17 00:19:29,456 INFO L226 Difference]: Without dead ends: 32560 [2021-11-17 00:19:29,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:19:29,497 INFO L933 BasicCegarLoop]: 2715 mSDtfsCounter, 5705 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 3705 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6000 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 6093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3705 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:19:29,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6000 Valid, 5313 Invalid, 6093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3705 Valid, 2387 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-17 00:19:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32560 states. [2021-11-17 00:19:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32560 to 28183. [2021-11-17 00:19:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28183 states, 19481 states have (on average 1.3529079616036137) internal successors, (26356), 20328 states have internal predecessors, (26356), 7018 states have call successors, (7018), 1198 states have call predecessors, (7018), 1683 states have return successors, (10164), 7089 states have call predecessors, (10164), 7014 states have call successors, (10164) [2021-11-17 00:19:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28183 states to 28183 states and 43538 transitions. [2021-11-17 00:19:31,018 INFO L78 Accepts]: Start accepts. Automaton has 28183 states and 43538 transitions. Word has length 72 [2021-11-17 00:19:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:19:31,020 INFO L470 AbstractCegarLoop]: Abstraction has 28183 states and 43538 transitions. [2021-11-17 00:19:31,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:19:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 28183 states and 43538 transitions. [2021-11-17 00:19:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-17 00:19:31,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:19:31,024 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:19:31,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:19:31,025 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:19:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:19:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash 508552962, now seen corresponding path program 1 times [2021-11-17 00:19:31,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:19:31,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182413306] [2021-11-17 00:19:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:19:31,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:19:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:19:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:19:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:19:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:19:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:19:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:19:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:19:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:19:31,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:19:31,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182413306] [2021-11-17 00:19:31,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182413306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:19:31,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:19:31,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:19:31,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512033172] [2021-11-17 00:19:31,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:19:31,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:19:31,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:19:31,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:19:31,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:19:31,315 INFO L87 Difference]: Start difference. First operand 28183 states and 43538 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:19:32,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:19:34,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:19:40,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:19:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:19:42,611 INFO L93 Difference]: Finished difference Result 32562 states and 50782 transitions. [2021-11-17 00:19:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:19:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2021-11-17 00:19:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:19:42,831 INFO L225 Difference]: With dead ends: 32562 [2021-11-17 00:19:42,831 INFO L226 Difference]: Without dead ends: 32505 [2021-11-17 00:19:42,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:19:42,873 INFO L933 BasicCegarLoop]: 2759 mSDtfsCounter, 5620 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 3654 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5916 SdHoareTripleChecker+Valid, 5365 SdHoareTripleChecker+Invalid, 6034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3654 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:19:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5916 Valid, 5365 Invalid, 6034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3654 Valid, 2379 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2021-11-17 00:19:42,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32505 states. [2021-11-17 00:19:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32505 to 28128. [2021-11-17 00:19:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28128 states, 19439 states have (on average 1.3530016976181902) internal successors, (26301), 20285 states have internal predecessors, (26301), 7007 states have call successors, (7007), 1196 states have call predecessors, (7007), 1681 states have return successors, (10154), 7079 states have call predecessors, (10154), 7004 states have call successors, (10154) [2021-11-17 00:19:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28128 states to 28128 states and 43462 transitions. [2021-11-17 00:19:44,346 INFO L78 Accepts]: Start accepts. Automaton has 28128 states and 43462 transitions. Word has length 73 [2021-11-17 00:19:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:19:44,346 INFO L470 AbstractCegarLoop]: Abstraction has 28128 states and 43462 transitions. [2021-11-17 00:19:44,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 00:19:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28128 states and 43462 transitions. [2021-11-17 00:19:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-17 00:19:44,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:19:44,417 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-17 00:19:44,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 00:19:44,417 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:19:44,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:19:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1032271128, now seen corresponding path program 1 times [2021-11-17 00:19:44,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:19:44,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980723344] [2021-11-17 00:19:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:19:44,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:19:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:19:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:19:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:19:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:19:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:19:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:19:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:19:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:19:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:19:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-17 00:19:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:19:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:19:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:19:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:19:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:19:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:19:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:19:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:19:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:19:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:19:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 00:19:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 00:19:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:19:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-17 00:19:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 00:19:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-17 00:19:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:19:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:19:45,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:19:45,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980723344] [2021-11-17 00:19:45,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980723344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:19:45,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:19:45,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:19:45,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862858962] [2021-11-17 00:19:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:19:45,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:19:45,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:19:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:19:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:19:45,098 INFO L87 Difference]: Start difference. First operand 28128 states and 43462 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (27), 9 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:19:47,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:19:49,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:20:13,319 INFO L93 Difference]: Finished difference Result 107323 states and 168875 transitions. [2021-11-17 00:20:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-17 00:20:13,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (27), 9 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 203 [2021-11-17 00:20:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:20:13,840 INFO L225 Difference]: With dead ends: 107323 [2021-11-17 00:20:13,841 INFO L226 Difference]: Without dead ends: 79221 [2021-11-17 00:20:13,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-11-17 00:20:13,968 INFO L933 BasicCegarLoop]: 3003 mSDtfsCounter, 20782 mSDsluCounter, 6711 mSDsCounter, 0 mSdLazyCounter, 9495 mSolverCounterSat, 20302 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21286 SdHoareTripleChecker+Valid, 9714 SdHoareTripleChecker+Invalid, 29799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20302 IncrementalHoareTripleChecker+Valid, 9495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:20:13,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21286 Valid, 9714 Invalid, 29799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20302 Valid, 9495 Invalid, 2 Unknown, 0 Unchecked, 24.7s Time] [2021-11-17 00:20:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79221 states. [2021-11-17 00:20:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79221 to 55835. [2021-11-17 00:20:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55835 states, 38043 states have (on average 1.3446889046605157) internal successors, (51156), 39808 states have internal predecessors, (51156), 14629 states have call successors, (14629), 2299 states have call predecessors, (14629), 3162 states have return successors, (18808), 14782 states have call predecessors, (18808), 14626 states have call successors, (18808) [2021-11-17 00:20:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55835 states to 55835 states and 84593 transitions. [2021-11-17 00:20:16,807 INFO L78 Accepts]: Start accepts. Automaton has 55835 states and 84593 transitions. Word has length 203 [2021-11-17 00:20:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:20:16,808 INFO L470 AbstractCegarLoop]: Abstraction has 55835 states and 84593 transitions. [2021-11-17 00:20:16,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (27), 9 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:20:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 55835 states and 84593 transitions. [2021-11-17 00:20:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-17 00:20:17,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:20:17,149 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:20:17,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 00:20:17,150 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:20:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:20:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash 262525336, now seen corresponding path program 1 times [2021-11-17 00:20:17,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:20:17,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903721345] [2021-11-17 00:20:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:20:17,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:20:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:20:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:20:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:20:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:20:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:20:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:20:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:20:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:20:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:20:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 00:20:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:20:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 00:20:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 00:20:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:20:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:20:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 00:20:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:20:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:20:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:20:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:20:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:20:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:20:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 00:20:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 00:20:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:20:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 00:20:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-11-17 00:20:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-17 00:20:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:20:17,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:20:17,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903721345] [2021-11-17 00:20:17,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903721345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:20:17,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:20:17,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 00:20:17,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615496793] [2021-11-17 00:20:17,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:20:17,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 00:20:17,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:20:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 00:20:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:20:17,705 INFO L87 Difference]: Start difference. First operand 55835 states and 84593 transitions. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (29), 9 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:20:19,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:21,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:23,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:35,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:36,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:38,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:20:48,755 INFO L93 Difference]: Finished difference Result 141099 states and 228798 transitions. [2021-11-17 00:20:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-17 00:20:48,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (29), 9 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 232 [2021-11-17 00:20:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:20:49,625 INFO L225 Difference]: With dead ends: 141099 [2021-11-17 00:20:49,625 INFO L226 Difference]: Without dead ends: 85290 [2021-11-17 00:20:49,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2021-11-17 00:20:49,902 INFO L933 BasicCegarLoop]: 3228 mSDtfsCounter, 11602 mSDsluCounter, 11877 mSDsCounter, 0 mSdLazyCounter, 9971 mSolverCounterSat, 10412 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11970 SdHoareTripleChecker+Valid, 15105 SdHoareTripleChecker+Invalid, 20386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10412 IncrementalHoareTripleChecker+Valid, 9971 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:20:49,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11970 Valid, 15105 Invalid, 20386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10412 Valid, 9971 Invalid, 3 Unknown, 0 Unchecked, 26.6s Time] [2021-11-17 00:20:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85290 states. [2021-11-17 00:20:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85290 to 55867. [2021-11-17 00:20:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55867 states, 38075 states have (on average 1.3442416283650689) internal successors, (51182), 39840 states have internal predecessors, (51182), 14629 states have call successors, (14629), 2299 states have call predecessors, (14629), 3162 states have return successors, (18808), 14782 states have call predecessors, (18808), 14626 states have call successors, (18808) [2021-11-17 00:20:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55867 states to 55867 states and 84619 transitions. [2021-11-17 00:20:53,308 INFO L78 Accepts]: Start accepts. Automaton has 55867 states and 84619 transitions. Word has length 232 [2021-11-17 00:20:53,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:20:53,309 INFO L470 AbstractCegarLoop]: Abstraction has 55867 states and 84619 transitions. [2021-11-17 00:20:53,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (29), 9 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:20:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 55867 states and 84619 transitions. [2021-11-17 00:20:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-17 00:20:53,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:20:53,386 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:20:53,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 00:20:53,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:20:53,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:20:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1097251239, now seen corresponding path program 1 times [2021-11-17 00:20:53,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:20:53,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046465227] [2021-11-17 00:20:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:20:53,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:20:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:20:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:20:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:20:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:20:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:20:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:20:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:20:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:20:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:20:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-17 00:20:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 00:20:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:20:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:20:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:20:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:20:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 00:20:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:20:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:20:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:20:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 00:20:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:20:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:20:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:20:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:20:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:20:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-17 00:20:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 00:20:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-17 00:20:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:20:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-17 00:20:54,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:20:54,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046465227] [2021-11-17 00:20:54,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046465227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:20:54,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:20:54,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 00:20:54,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769372632] [2021-11-17 00:20:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:20:54,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 00:20:54,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:20:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 00:20:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:20:54,296 INFO L87 Difference]: Start difference. First operand 55867 states and 84619 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (29), 9 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 00:20:56,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:20:59,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:21:01,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:21:21,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:21:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:21:40,165 INFO L93 Difference]: Finished difference Result 188551 states and 304335 transitions. [2021-11-17 00:21:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-17 00:21:40,166 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (29), 9 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 238 [2021-11-17 00:21:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:21:41,315 INFO L225 Difference]: With dead ends: 188551 [2021-11-17 00:21:41,315 INFO L226 Difference]: Without dead ends: 132710 [2021-11-17 00:21:41,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=488, Invalid=1582, Unknown=0, NotChecked=0, Total=2070 [2021-11-17 00:21:41,765 INFO L933 BasicCegarLoop]: 5274 mSDtfsCounter, 11879 mSDsluCounter, 16673 mSDsCounter, 0 mSdLazyCounter, 17114 mSolverCounterSat, 13755 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12434 SdHoareTripleChecker+Valid, 21947 SdHoareTripleChecker+Invalid, 30872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13755 IncrementalHoareTripleChecker+Valid, 17114 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:21:41,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12434 Valid, 21947 Invalid, 30872 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13755 Valid, 17114 Invalid, 3 Unknown, 0 Unchecked, 38.1s Time] [2021-11-17 00:21:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132710 states. [2021-11-17 00:21:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132710 to 93615. [2021-11-17 00:21:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93615 states, 63831 states have (on average 1.3432971440209303) internal successors, (85744), 66774 states have internal predecessors, (85744), 24507 states have call successors, (24507), 3837 states have call predecessors, (24507), 5276 states have return successors, (31494), 24756 states have call predecessors, (31494), 24504 states have call successors, (31494) [2021-11-17 00:21:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93615 states to 93615 states and 141745 transitions. [2021-11-17 00:21:48,138 INFO L78 Accepts]: Start accepts. Automaton has 93615 states and 141745 transitions. Word has length 238 [2021-11-17 00:21:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:21:48,139 INFO L470 AbstractCegarLoop]: Abstraction has 93615 states and 141745 transitions. [2021-11-17 00:21:48,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (29), 9 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 00:21:48,140 INFO L276 IsEmpty]: Start isEmpty. Operand 93615 states and 141745 transitions. [2021-11-17 00:21:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-17 00:21:48,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:21:48,314 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:21:48,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 00:21:48,314 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:21:48,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:21:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash -689960594, now seen corresponding path program 1 times [2021-11-17 00:21:48,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:21:48,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154147461] [2021-11-17 00:21:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:21:48,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:21:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:21:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:21:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:21:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:21:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:21:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:21:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:21:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:21:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:21:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 00:21:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:21:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 00:21:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:21:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 00:21:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:21:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:21:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 00:21:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:21:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:21:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:21:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:21:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:21:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:21:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:21:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:21:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:21:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:21:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:21:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:21:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-17 00:21:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-17 00:21:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 00:21:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-17 00:21:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-17 00:21:48,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:21:48,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154147461] [2021-11-17 00:21:48,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154147461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:21:48,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382647931] [2021-11-17 00:21:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:21:48,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:21:48,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:21:48,975 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) [2021-11-17 00:21:48,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:21:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:21:50,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 6249 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:21:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:21:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-17 00:21:50,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:21:50,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382647931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:21:50,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:21:50,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 12 [2021-11-17 00:21:50,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514181418] [2021-11-17 00:21:50,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:21:50,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:21:50,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:21:50,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:21:50,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:21:50,893 INFO L87 Difference]: Start difference. First operand 93615 states and 141745 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-17 00:21:52,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:21:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:21:56,880 INFO L93 Difference]: Finished difference Result 170787 states and 258466 transitions. [2021-11-17 00:21:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:21:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 268 [2021-11-17 00:21:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:21:57,394 INFO L225 Difference]: With dead ends: 170787 [2021-11-17 00:21:57,394 INFO L226 Difference]: Without dead ends: 77196 [2021-11-17 00:21:57,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:21:57,909 INFO L933 BasicCegarLoop]: 3020 mSDtfsCounter, 11 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:21:57,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 6025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-17 00:21:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77196 states. [2021-11-17 00:22:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77196 to 76828. [2021-11-17 00:22:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76828 states, 52403 states have (on average 1.3435871992061523) internal successors, (70408), 54814 states have internal predecessors, (70408), 20093 states have call successors, (20093), 3180 states have call predecessors, (20093), 4331 states have return successors, (25682), 20264 states have call predecessors, (25682), 20090 states have call successors, (25682) [2021-11-17 00:22:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76828 states to 76828 states and 116183 transitions. [2021-11-17 00:22:02,324 INFO L78 Accepts]: Start accepts. Automaton has 76828 states and 116183 transitions. Word has length 268 [2021-11-17 00:22:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:22:02,325 INFO L470 AbstractCegarLoop]: Abstraction has 76828 states and 116183 transitions. [2021-11-17 00:22:02,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-17 00:22:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 76828 states and 116183 transitions. [2021-11-17 00:22:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-17 00:22:02,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:22:02,468 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:22:02,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-17 00:22:02,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-17 00:22:02,684 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:22:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:22:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1854401289, now seen corresponding path program 1 times [2021-11-17 00:22:02,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:22:02,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724564214] [2021-11-17 00:22:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:22:02,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:22:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:22:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:22:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:22:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:22:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:22:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:22:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:22:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:22:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:22:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:22:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:22:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 00:22:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:22:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 00:22:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-17 00:22:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:22:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:22:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-17 00:22:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:22:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:22:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:22:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:22:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:22:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:22:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:22:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:22:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:22:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:22:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:22:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:22:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-17 00:22:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-17 00:22:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-17 00:22:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-11-17 00:22:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-17 00:22:03,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:22:03,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724564214] [2021-11-17 00:22:03,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724564214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:22:03,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230748648] [2021-11-17 00:22:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:22:03,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:22:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:22:03,624 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) [2021-11-17 00:22:03,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:22:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:22:04,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 6264 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:22:04,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:22:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-17 00:22:05,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:22:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-17 00:22:05,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230748648] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:22:05,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:22:05,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2021-11-17 00:22:05,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547372315] [2021-11-17 00:22:05,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:22:05,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 00:22:05,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:22:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 00:22:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:22:05,739 INFO L87 Difference]: Start difference. First operand 76828 states and 116183 transitions. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 7 states have internal predecessors, (182), 5 states have call successors, (74), 9 states have call predecessors, (74), 2 states have return successors, (53), 5 states have call predecessors, (53), 5 states have call successors, (53) [2021-11-17 00:22:06,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:22:08,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:22:11,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:22:22,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:22:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:22:35,759 INFO L93 Difference]: Finished difference Result 187904 states and 299633 transitions. [2021-11-17 00:22:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-17 00:22:35,759 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 7 states have internal predecessors, (182), 5 states have call successors, (74), 9 states have call predecessors, (74), 2 states have return successors, (53), 5 states have call predecessors, (53), 5 states have call successors, (53) Word has length 272 [2021-11-17 00:22:35,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:22:36,589 INFO L225 Difference]: With dead ends: 187904 [2021-11-17 00:22:36,589 INFO L226 Difference]: Without dead ends: 111102 [2021-11-17 00:22:37,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=413, Invalid=1227, Unknown=0, NotChecked=0, Total=1640 [2021-11-17 00:22:37,118 INFO L933 BasicCegarLoop]: 2628 mSDtfsCounter, 8537 mSDsluCounter, 12707 mSDsCounter, 0 mSdLazyCounter, 10895 mSolverCounterSat, 9234 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8744 SdHoareTripleChecker+Valid, 15335 SdHoareTripleChecker+Invalid, 20132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9234 IncrementalHoareTripleChecker+Valid, 10895 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:22:37,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8744 Valid, 15335 Invalid, 20132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9234 Valid, 10895 Invalid, 3 Unknown, 0 Unchecked, 23.1s Time] [2021-11-17 00:22:37,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111102 states.