./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--net--can--usb--ems_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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--net--can--usb--ems_usb.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 be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:24:59,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:24:59,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:24:59,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:24:59,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:24:59,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:24:59,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:24:59,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:24:59,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:24:59,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:24:59,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:24:59,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:24:59,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:24:59,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:24:59,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:24:59,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:24:59,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:24:59,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:24:59,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:24:59,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:24:59,939 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:24:59,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:24:59,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:24:59,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:24:59,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:24:59,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:24:59,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:24:59,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:24:59,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:24:59,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:24:59,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:24:59,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:24:59,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:24:59,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:24:59,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:24:59,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:24:59,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:24:59,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:24:59,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:24:59,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:24:59,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:24:59,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:24:59,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:24:59,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:24:59,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:24:59,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:24:59,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:24:59,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:24:59,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:24:59,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:24:59,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:24:59,980 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:24:59,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:24:59,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:24:59,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:24:59,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:24:59,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:24:59,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:24:59,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:24:59,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:24:59,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:24:59,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:24:59,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:24:59,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:24:59,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:24:59,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:24:59,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:24:59,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:24:59,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:24:59,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:24:59,984 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:24:59,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:24:59,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:24:59,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 [2022-07-12 12:25:00,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:25:00,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:25:00,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:25:00,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:25:00,151 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:25:00,152 INFO L432 ainManager$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--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-07-12 12:25:00,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716bfb8dc/d778c1f570fe4fbc87a88220f257f2c1/FLAG3968bf6a9 [2022-07-12 12:25:00,716 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:25:00,717 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--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-07-12 12:25:00,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716bfb8dc/d778c1f570fe4fbc87a88220f257f2c1/FLAG3968bf6a9 [2022-07-12 12:25:00,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716bfb8dc/d778c1f570fe4fbc87a88220f257f2c1 [2022-07-12 12:25:00,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:25:00,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:25:00,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:25:00,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:25:00,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:25:00,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:25:00" (1/1) ... [2022-07-12 12:25:00,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504b2e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:00, skipping insertion in model container [2022-07-12 12:25:00,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:25:00" (1/1) ... [2022-07-12 12:25:00,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:25:01,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:25:01,611 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--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-07-12 12:25:01,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:25:01,948 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:25:02,026 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--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-07-12 12:25:02,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:25:02,178 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:25:02,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02 WrapperNode [2022-07-12 12:25:02,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:25:02,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:25:02,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:25:02,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:25:02,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,304 INFO L137 Inliner]: procedures = 169, calls = 721, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 2029 [2022-07-12 12:25:02,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:25:02,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:25:02,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:25:02,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:25:02,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:25:02,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:25:02,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:25:02,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:25:02,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (1/1) ... [2022-07-12 12:25:02,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:25:02,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:25:02,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:25:02,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:25:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-07-12 12:25:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-07-12 12:25:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:25:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2022-07-12 12:25:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2022-07-12 12:25:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2022-07-12 12:25:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2022-07-12 12:25:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-07-12 12:25:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-07-12 12:25:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-07-12 12:25:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-07-12 12:25:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:25:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:25:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:25:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:25:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:25:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-12 12:25:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-12 12:25:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2022-07-12 12:25:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2022-07-12 12:25:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-07-12 12:25:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-07-12 12:25:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-12 12:25:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-12 12:25:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-07-12 12:25:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-07-12 12:25:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-12 12:25:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-12 12:25:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-12 12:25:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-12 12:25:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:25:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:25:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-12 12:25:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-12 12:25:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 12:25:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 12:25:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-12 12:25:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-12 12:25:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:25:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:25:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-12 12:25:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-12 12:25:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:25:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:25:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:25:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:25:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:25:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:25:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:25:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-12 12:25:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-12 12:25:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-07-12 12:25:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-07-12 12:25:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:25:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-12 12:25:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-12 12:25:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-07-12 12:25:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-07-12 12:25:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:25:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-12 12:25:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-12 12:25:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-12 12:25:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-12 12:25:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:25:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:25:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-07-12 12:25:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-07-12 12:25:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:25:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:25:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-12 12:25:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-12 12:25:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-12 12:25:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-12 12:25:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:25:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_disconnect [2022-07-12 12:25:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_disconnect [2022-07-12 12:25:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-12 12:25:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-12 12:25:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-07-12 12:25:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-07-12 12:25:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2022-07-12 12:25:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2022-07-12 12:25:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-12 12:25:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-12 12:25:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:25:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-12 12:25:02,575 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-12 12:25:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:25:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_rx_err [2022-07-12 12:25:02,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_rx_err [2022-07-12 12:25:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 12:25:02,575 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 12:25:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-07-12 12:25:02,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-07-12 12:25:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 12:25:02,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 12:25:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-12 12:25:02,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-12 12:25:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 12:25:02,577 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 12:25:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-12 12:25:02,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-12 12:25:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-07-12 12:25:02,578 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-07-12 12:25:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:25:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-07-12 12:25:02,578 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-07-12 12:25:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:25:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:25:02,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:25:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:25:02,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:25:02,888 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:25:02,890 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:25:03,059 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:25:03,524 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-12 12:25:05,074 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:25:05,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:25:05,082 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:25:05,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:25:05 BoogieIcfgContainer [2022-07-12 12:25:05,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:25:05,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:25:05,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:25:05,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:25:05,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:25:00" (1/3) ... [2022-07-12 12:25:05,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e374fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:25:05, skipping insertion in model container [2022-07-12 12:25:05,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:25:02" (2/3) ... [2022-07-12 12:25:05,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e374fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:25:05, skipping insertion in model container [2022-07-12 12:25:05,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:25:05" (3/3) ... [2022-07-12 12:25:05,089 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-07-12 12:25:05,098 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:25:05,098 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:25:05,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:25:05,137 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@714e8ac6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f29aedd [2022-07-12 12:25:05,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:25:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 490 states have (on average 1.3510204081632653) internal successors, (662), 514 states have internal predecessors, (662), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) [2022-07-12 12:25:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-12 12:25:05,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:05,148 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 12:25:05,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:05,159 INFO L85 PathProgramCache]: Analyzing trace with hash 585131753, now seen corresponding path program 1 times [2022-07-12 12:25:05,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:05,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838444306] [2022-07-12 12:25:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:05,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:05,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:25:05,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:05,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838444306] [2022-07-12 12:25:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838444306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:05,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:05,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:25:05,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516244203] [2022-07-12 12:25:05,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:05,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:25:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:25:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:25:05,616 INFO L87 Difference]: Start difference. First operand has 673 states, 490 states have (on average 1.3510204081632653) internal successors, (662), 514 states have internal predecessors, (662), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 12:25:08,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:25:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:08,947 INFO L93 Difference]: Finished difference Result 2125 states and 3041 transitions. [2022-07-12 12:25:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:25:08,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-12 12:25:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:08,978 INFO L225 Difference]: With dead ends: 2125 [2022-07-12 12:25:08,979 INFO L226 Difference]: Without dead ends: 1433 [2022-07-12 12:25:08,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:25:08,990 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 1298 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:08,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 2015 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 12:25:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2022-07-12 12:25:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1283. [2022-07-12 12:25:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 943 states have (on average 1.3160127253446448) internal successors, (1241), 971 states have internal predecessors, (1241), 249 states have call successors, (249), 91 states have call predecessors, (249), 90 states have return successors, (244), 234 states have call predecessors, (244), 244 states have call successors, (244) [2022-07-12 12:25:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1734 transitions. [2022-07-12 12:25:09,091 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1734 transitions. Word has length 28 [2022-07-12 12:25:09,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:09,092 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1734 transitions. [2022-07-12 12:25:09,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 12:25:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1734 transitions. [2022-07-12 12:25:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 12:25:09,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:09,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:09,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:25:09,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:09,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1772394292, now seen corresponding path program 1 times [2022-07-12 12:25:09,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:09,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618151160] [2022-07-12 12:25:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:09,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:09,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:25:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:09,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618151160] [2022-07-12 12:25:09,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618151160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:09,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:09,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:25:09,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957270395] [2022-07-12 12:25:09,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:09,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:25:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:25:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:25:09,205 INFO L87 Difference]: Start difference. First operand 1283 states and 1734 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:12,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:25:13,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:13,484 INFO L93 Difference]: Finished difference Result 4134 states and 5797 transitions. [2022-07-12 12:25:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:25:13,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-07-12 12:25:13,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:13,496 INFO L225 Difference]: With dead ends: 4134 [2022-07-12 12:25:13,496 INFO L226 Difference]: Without dead ends: 2858 [2022-07-12 12:25:13,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:25:13,501 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1308 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 404 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:13,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 2137 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 711 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-12 12:25:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2022-07-12 12:25:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2652. [2022-07-12 12:25:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1952 states have (on average 1.3165983606557377) internal successors, (2570), 2016 states have internal predecessors, (2570), 505 states have call successors, (505), 181 states have call predecessors, (505), 194 states have return successors, (576), 488 states have call predecessors, (576), 500 states have call successors, (576) [2022-07-12 12:25:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3651 transitions. [2022-07-12 12:25:13,621 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3651 transitions. Word has length 38 [2022-07-12 12:25:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:13,622 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 3651 transitions. [2022-07-12 12:25:13,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3651 transitions. [2022-07-12 12:25:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 12:25:13,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:13,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:13,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:25:13,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:13,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -890663808, now seen corresponding path program 1 times [2022-07-12 12:25:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:13,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137571035] [2022-07-12 12:25:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:13,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:13,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:25:13,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:13,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137571035] [2022-07-12 12:25:13,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137571035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:13,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:13,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:25:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441969067] [2022-07-12 12:25:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:25:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:13,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:25:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:25:13,725 INFO L87 Difference]: Start difference. First operand 2652 states and 3651 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:14,933 INFO L93 Difference]: Finished difference Result 2850 states and 3986 transitions. [2022-07-12 12:25:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:25:14,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-12 12:25:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:14,945 INFO L225 Difference]: With dead ends: 2850 [2022-07-12 12:25:14,945 INFO L226 Difference]: Without dead ends: 2847 [2022-07-12 12:25:14,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:25:14,947 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1057 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:14,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1209 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:25:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2022-07-12 12:25:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2651. [2022-07-12 12:25:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 1952 states have (on average 1.3160860655737705) internal successors, (2569), 2015 states have internal predecessors, (2569), 504 states have call successors, (504), 181 states have call predecessors, (504), 194 states have return successors, (576), 488 states have call predecessors, (576), 500 states have call successors, (576) [2022-07-12 12:25:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3649 transitions. [2022-07-12 12:25:15,021 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3649 transitions. Word has length 39 [2022-07-12 12:25:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:15,022 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3649 transitions. [2022-07-12 12:25:15,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:15,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3649 transitions. [2022-07-12 12:25:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 12:25:15,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:15,027 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:25:15,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:15,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:15,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1841081417, now seen corresponding path program 1 times [2022-07-12 12:25:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:15,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442829396] [2022-07-12 12:25:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:25:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:15,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442829396] [2022-07-12 12:25:15,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442829396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:15,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:15,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:25:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961407263] [2022-07-12 12:25:15,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:15,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:25:15,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:25:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:25:15,182 INFO L87 Difference]: Start difference. First operand 2651 states and 3649 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:17,006 INFO L93 Difference]: Finished difference Result 2849 states and 3984 transitions. [2022-07-12 12:25:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:25:17,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-07-12 12:25:17,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:17,017 INFO L225 Difference]: With dead ends: 2849 [2022-07-12 12:25:17,017 INFO L226 Difference]: Without dead ends: 2846 [2022-07-12 12:25:17,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:25:17,019 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1054 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:17,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1206 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 12:25:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-07-12 12:25:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2650. [2022-07-12 12:25:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 1952 states have (on average 1.3155737704918034) internal successors, (2568), 2014 states have internal predecessors, (2568), 503 states have call successors, (503), 181 states have call predecessors, (503), 194 states have return successors, (576), 488 states have call predecessors, (576), 500 states have call successors, (576) [2022-07-12 12:25:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3647 transitions. [2022-07-12 12:25:17,082 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3647 transitions. Word has length 40 [2022-07-12 12:25:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:17,082 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3647 transitions. [2022-07-12 12:25:17,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3647 transitions. [2022-07-12 12:25:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 12:25:17,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:17,084 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:17,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:25:17,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1239251357, now seen corresponding path program 1 times [2022-07-12 12:25:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225518704] [2022-07-12 12:25:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:25:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:17,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225518704] [2022-07-12 12:25:17,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225518704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:17,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:17,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:25:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028409531] [2022-07-12 12:25:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:25:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:25:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:25:17,166 INFO L87 Difference]: Start difference. First operand 2650 states and 3647 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:18,845 INFO L93 Difference]: Finished difference Result 2848 states and 3982 transitions. [2022-07-12 12:25:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:25:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-12 12:25:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:18,857 INFO L225 Difference]: With dead ends: 2848 [2022-07-12 12:25:18,857 INFO L226 Difference]: Without dead ends: 2845 [2022-07-12 12:25:18,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:25:18,860 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 1051 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:18,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1203 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 12:25:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2022-07-12 12:25:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2649. [2022-07-12 12:25:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 1952 states have (on average 1.315061475409836) internal successors, (2567), 2013 states have internal predecessors, (2567), 502 states have call successors, (502), 181 states have call predecessors, (502), 194 states have return successors, (576), 488 states have call predecessors, (576), 500 states have call successors, (576) [2022-07-12 12:25:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3645 transitions. [2022-07-12 12:25:18,945 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3645 transitions. Word has length 41 [2022-07-12 12:25:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:18,945 INFO L495 AbstractCegarLoop]: Abstraction has 2649 states and 3645 transitions. [2022-07-12 12:25:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3645 transitions. [2022-07-12 12:25:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-12 12:25:18,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:18,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:18,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:25:18,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash 237616186, now seen corresponding path program 1 times [2022-07-12 12:25:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:18,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943187821] [2022-07-12 12:25:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:25:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943187821] [2022-07-12 12:25:19,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943187821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:19,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:19,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:25:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985705476] [2022-07-12 12:25:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:19,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:25:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:25:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:25:19,085 INFO L87 Difference]: Start difference. First operand 2649 states and 3645 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:20,665 INFO L93 Difference]: Finished difference Result 2847 states and 3980 transitions. [2022-07-12 12:25:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:25:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-12 12:25:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:20,675 INFO L225 Difference]: With dead ends: 2847 [2022-07-12 12:25:20,675 INFO L226 Difference]: Without dead ends: 2835 [2022-07-12 12:25:20,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:25:20,676 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1048 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:20,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1200 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 12:25:20,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-07-12 12:25:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2639. [2022-07-12 12:25:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 1943 states have (on average 1.314462171899125) internal successors, (2554), 2003 states have internal predecessors, (2554), 501 states have call successors, (501), 181 states have call predecessors, (501), 194 states have return successors, (576), 488 states have call predecessors, (576), 500 states have call successors, (576) [2022-07-12 12:25:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3631 transitions. [2022-07-12 12:25:20,740 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3631 transitions. Word has length 42 [2022-07-12 12:25:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:20,740 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 3631 transitions. [2022-07-12 12:25:20,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:25:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3631 transitions. [2022-07-12 12:25:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 12:25:20,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:20,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-12 12:25:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:25:20,743 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1248888818, now seen corresponding path program 1 times [2022-07-12 12:25:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:20,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518689021] [2022-07-12 12:25:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 12:25:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 12:25:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 12:25:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 12:25:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:25:20,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:20,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518689021] [2022-07-12 12:25:20,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518689021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:20,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:20,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:25:20,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11117857] [2022-07-12 12:25:20,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:20,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:25:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:25:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:25:20,846 INFO L87 Difference]: Start difference. First operand 2639 states and 3631 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:25:21,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:21,929 INFO L93 Difference]: Finished difference Result 6410 states and 8815 transitions. [2022-07-12 12:25:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:25:21,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-07-12 12:25:21,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:21,943 INFO L225 Difference]: With dead ends: 6410 [2022-07-12 12:25:21,943 INFO L226 Difference]: Without dead ends: 3778 [2022-07-12 12:25:21,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:25:21,950 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1146 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:21,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1966 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:25:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-07-12 12:25:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3412. [2022-07-12 12:25:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 2508 states have (on average 1.2934609250398723) internal successors, (3244), 2574 states have internal predecessors, (3244), 624 states have call successors, (624), 252 states have call predecessors, (624), 279 states have return successors, (737), 617 states have call predecessors, (737), 623 states have call successors, (737) [2022-07-12 12:25:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 4605 transitions. [2022-07-12 12:25:22,050 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 4605 transitions. Word has length 85 [2022-07-12 12:25:22,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:22,051 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 4605 transitions. [2022-07-12 12:25:22,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:25:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 4605 transitions. [2022-07-12 12:25:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 12:25:22,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:22,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-07-12 12:25:22,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:25:22,054 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 187651659, now seen corresponding path program 1 times [2022-07-12 12:25:22,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:22,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693874475] [2022-07-12 12:25:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:25:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:25:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 12:25:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 12:25:22,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:22,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693874475] [2022-07-12 12:25:22,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693874475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:22,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:22,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:25:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927087100] [2022-07-12 12:25:22,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:22,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:25:22,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:25:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:25:22,174 INFO L87 Difference]: Start difference. First operand 3412 states and 4605 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 12:25:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:25,305 INFO L93 Difference]: Finished difference Result 8028 states and 10877 transitions. [2022-07-12 12:25:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:25:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2022-07-12 12:25:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:25,323 INFO L225 Difference]: With dead ends: 8028 [2022-07-12 12:25:25,323 INFO L226 Difference]: Without dead ends: 4630 [2022-07-12 12:25:25,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:25:25,333 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 747 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:25,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 3121 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 12:25:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2022-07-12 12:25:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 4206. [2022-07-12 12:25:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4206 states, 3102 states have (on average 1.2823984526112187) internal successors, (3978), 3174 states have internal predecessors, (3978), 746 states have call successors, (746), 322 states have call predecessors, (746), 357 states have return successors, (879), 741 states have call predecessors, (879), 745 states have call successors, (879) [2022-07-12 12:25:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 5603 transitions. [2022-07-12 12:25:25,513 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 5603 transitions. Word has length 101 [2022-07-12 12:25:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:25,514 INFO L495 AbstractCegarLoop]: Abstraction has 4206 states and 5603 transitions. [2022-07-12 12:25:25,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 12:25:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 5603 transitions. [2022-07-12 12:25:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 12:25:25,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:25,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:25,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:25:25,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:25,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1026312929, now seen corresponding path program 1 times [2022-07-12 12:25:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:25,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711504556] [2022-07-12 12:25:25,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:25:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 12:25:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 12:25:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 12:25:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:25:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 12:25:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:25:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 12:25:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:25:25,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:25,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711504556] [2022-07-12 12:25:25,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711504556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:25,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:25,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:25:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051298655] [2022-07-12 12:25:25,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:25:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:25:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:25:25,711 INFO L87 Difference]: Start difference. First operand 4206 states and 5603 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 7 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:25:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:30,081 INFO L93 Difference]: Finished difference Result 12216 states and 16857 transitions. [2022-07-12 12:25:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 12:25:30,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 7 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-07-12 12:25:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:30,106 INFO L225 Difference]: With dead ends: 12216 [2022-07-12 12:25:30,107 INFO L226 Difference]: Without dead ends: 8024 [2022-07-12 12:25:30,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-12 12:25:30,150 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 2160 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 1103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 3120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1103 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:30,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 3812 Invalid, 3120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1103 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 12:25:30,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2022-07-12 12:25:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7028. [2022-07-12 12:25:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7028 states, 5205 states have (on average 1.3037463976945245) internal successors, (6786), 5381 states have internal predecessors, (6786), 1224 states have call successors, (1224), 491 states have call predecessors, (1224), 598 states have return successors, (1611), 1243 states have call predecessors, (1611), 1223 states have call successors, (1611) [2022-07-12 12:25:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 9621 transitions. [2022-07-12 12:25:30,348 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 9621 transitions. Word has length 116 [2022-07-12 12:25:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:30,348 INFO L495 AbstractCegarLoop]: Abstraction has 7028 states and 9621 transitions. [2022-07-12 12:25:30,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 7 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:25:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 9621 transitions. [2022-07-12 12:25:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 12:25:30,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:30,352 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-07-12 12:25:30,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 12:25:30,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash -982390427, now seen corresponding path program 1 times [2022-07-12 12:25:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:30,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366742641] [2022-07-12 12:25:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:25:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 12:25:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:25:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 12:25:30,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:30,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366742641] [2022-07-12 12:25:30,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366742641] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:25:30,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751500549] [2022-07-12 12:25:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:30,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:30,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:25:30,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:25:30,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:25:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:30,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:25:30,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:25:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 12:25:30,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:25:30,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751500549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:30,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:25:30,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 12:25:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410870034] [2022-07-12 12:25:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:30,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:25:30,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:25:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:25:30,947 INFO L87 Difference]: Start difference. First operand 7028 states and 9621 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:25:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:31,296 INFO L93 Difference]: Finished difference Result 17818 states and 24314 transitions. [2022-07-12 12:25:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:25:31,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 113 [2022-07-12 12:25:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:31,327 INFO L225 Difference]: With dead ends: 17818 [2022-07-12 12:25:31,327 INFO L226 Difference]: Without dead ends: 10808 [2022-07-12 12:25:31,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:25:31,342 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 702 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:31,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1680 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:25:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10808 states. [2022-07-12 12:25:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10808 to 10800. [2022-07-12 12:25:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10800 states, 8023 states have (on average 1.3096098716190951) internal successors, (10507), 8347 states have internal predecessors, (10507), 1764 states have call successors, (1764), 813 states have call predecessors, (1764), 1012 states have return successors, (2419), 1807 states have call predecessors, (2419), 1763 states have call successors, (2419) [2022-07-12 12:25:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10800 states to 10800 states and 14690 transitions. [2022-07-12 12:25:31,712 INFO L78 Accepts]: Start accepts. Automaton has 10800 states and 14690 transitions. Word has length 113 [2022-07-12 12:25:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:31,712 INFO L495 AbstractCegarLoop]: Abstraction has 10800 states and 14690 transitions. [2022-07-12 12:25:31,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:25:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10800 states and 14690 transitions. [2022-07-12 12:25:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 12:25:31,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:31,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2022-07-12 12:25:31,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 12:25:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 12:25:31,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash -210210510, now seen corresponding path program 1 times [2022-07-12 12:25:31,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723780939] [2022-07-12 12:25:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:25:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:25:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:25:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:25:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:25:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:25:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 12:25:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 12:25:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 12:25:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:32,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723780939] [2022-07-12 12:25:32,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723780939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:32,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:32,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:25:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119842860] [2022-07-12 12:25:32,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:32,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:25:32,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:25:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:25:32,094 INFO L87 Difference]: Start difference. First operand 10800 states and 14690 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 12:25:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:35,739 INFO L93 Difference]: Finished difference Result 23368 states and 32291 transitions. [2022-07-12 12:25:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:25:35,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-07-12 12:25:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:35,774 INFO L225 Difference]: With dead ends: 23368 [2022-07-12 12:25:35,774 INFO L226 Difference]: Without dead ends: 12586 [2022-07-12 12:25:35,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:25:35,796 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 635 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:35,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 2598 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 12:25:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12586 states. [2022-07-12 12:25:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12586 to 10816. [2022-07-12 12:25:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10816 states, 8039 states have (on average 1.308993655927354) internal successors, (10523), 8363 states have internal predecessors, (10523), 1764 states have call successors, (1764), 813 states have call predecessors, (1764), 1012 states have return successors, (2419), 1807 states have call predecessors, (2419), 1763 states have call successors, (2419) [2022-07-12 12:25:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10816 states to 10816 states and 14706 transitions. [2022-07-12 12:25:36,173 INFO L78 Accepts]: Start accepts. Automaton has 10816 states and 14706 transitions. Word has length 132 [2022-07-12 12:25:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:36,173 INFO L495 AbstractCegarLoop]: Abstraction has 10816 states and 14706 transitions. [2022-07-12 12:25:36,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 12:25:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 10816 states and 14706 transitions. [2022-07-12 12:25:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 12:25:36,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:36,180 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2022-07-12 12:25:36,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 12:25:36,180 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1829690478, now seen corresponding path program 1 times [2022-07-12 12:25:36,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:36,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747256757] [2022-07-12 12:25:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:25:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:25:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:25:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:25:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:25:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:25:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:25:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 12:25:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 12:25:36,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747256757] [2022-07-12 12:25:36,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747256757] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:25:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972980765] [2022-07-12 12:25:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:36,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:36,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:25:36,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:25:36,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:25:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:36,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:25:36,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:25:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 12:25:36,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:25:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 12:25:37,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972980765] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:25:37,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:25:37,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2022-07-12 12:25:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000573059] [2022-07-12 12:25:37,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:25:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 12:25:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 12:25:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:25:37,011 INFO L87 Difference]: Start difference. First operand 10816 states and 14706 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 7 states have internal predecessors, (109), 2 states have call successors, (30), 7 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:25:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:40,993 INFO L93 Difference]: Finished difference Result 23464 states and 32419 transitions. [2022-07-12 12:25:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:25:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 7 states have internal predecessors, (109), 2 states have call successors, (30), 7 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 134 [2022-07-12 12:25:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:41,080 INFO L225 Difference]: With dead ends: 23464 [2022-07-12 12:25:41,081 INFO L226 Difference]: Without dead ends: 12666 [2022-07-12 12:25:41,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:25:41,097 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1084 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:41,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 4101 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 12:25:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12666 states. [2022-07-12 12:25:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12666 to 10912. [2022-07-12 12:25:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 8135 states have (on average 1.3053472649047326) internal successors, (10619), 8459 states have internal predecessors, (10619), 1764 states have call successors, (1764), 813 states have call predecessors, (1764), 1012 states have return successors, (2419), 1807 states have call predecessors, (2419), 1763 states have call successors, (2419) [2022-07-12 12:25:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 14802 transitions. [2022-07-12 12:25:41,509 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 14802 transitions. Word has length 134 [2022-07-12 12:25:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:41,509 INFO L495 AbstractCegarLoop]: Abstraction has 10912 states and 14802 transitions. [2022-07-12 12:25:41,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 7 states have internal predecessors, (109), 2 states have call successors, (30), 7 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:25:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 14802 transitions. [2022-07-12 12:25:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 12:25:41,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:41,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-07-12 12:25:41,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:25:41,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 12:25:41,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1425592176, now seen corresponding path program 1 times [2022-07-12 12:25:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:41,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43507995] [2022-07-12 12:25:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:25:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:25:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:25:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:25:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:25:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 12:25:41,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43507995] [2022-07-12 12:25:41,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43507995] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:25:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279776405] [2022-07-12 12:25:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:41,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:41,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:25:41,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:25:41,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 12:25:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:42,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:25:42,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:25:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 12:25:42,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:25:42,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279776405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:42,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:25:42,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-07-12 12:25:42,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068199793] [2022-07-12 12:25:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:42,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:25:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:25:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:25:42,551 INFO L87 Difference]: Start difference. First operand 10912 states and 14802 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 12:25:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:44,007 INFO L93 Difference]: Finished difference Result 32702 states and 44367 transitions. [2022-07-12 12:25:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:25:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 138 [2022-07-12 12:25:44,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:44,191 INFO L225 Difference]: With dead ends: 32702 [2022-07-12 12:25:44,191 INFO L226 Difference]: Without dead ends: 32694 [2022-07-12 12:25:44,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:25:44,204 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 2073 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:44,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 2789 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 12:25:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32694 states. [2022-07-12 12:25:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32694 to 32660. [2022-07-12 12:25:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32660 states, 24343 states have (on average 1.3057141683440825) internal successors, (31785), 25331 states have internal predecessors, (31785), 5284 states have call successors, (5284), 2433 states have call predecessors, (5284), 3032 states have return successors, (7251), 5399 states have call predecessors, (7251), 5283 states have call successors, (7251) [2022-07-12 12:25:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32660 states to 32660 states and 44320 transitions. [2022-07-12 12:25:45,354 INFO L78 Accepts]: Start accepts. Automaton has 32660 states and 44320 transitions. Word has length 138 [2022-07-12 12:25:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:45,354 INFO L495 AbstractCegarLoop]: Abstraction has 32660 states and 44320 transitions. [2022-07-12 12:25:45,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 12:25:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 32660 states and 44320 transitions. [2022-07-12 12:25:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 12:25:45,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:45,370 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-12 12:25:45,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 12:25:45,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:45,589 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1442412384, now seen corresponding path program 1 times [2022-07-12 12:25:45,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:45,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750705385] [2022-07-12 12:25:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:25:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:25:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:25:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:25:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:25:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:25:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 12:25:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 12:25:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 12:25:45,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750705385] [2022-07-12 12:25:45,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750705385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:25:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400405202] [2022-07-12 12:25:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:45,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:45,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:25:45,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:25:45,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 12:25:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:46,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 12:25:46,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:25:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 12:25:46,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:25:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 12:25:46,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400405202] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:25:46,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:25:46,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 18 [2022-07-12 12:25:46,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302349870] [2022-07-12 12:25:46,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:25:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 12:25:46,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 12:25:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-07-12 12:25:46,462 INFO L87 Difference]: Start difference. First operand 32660 states and 44320 transitions. Second operand has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 13 states have internal predecessors, (121), 2 states have call successors, (30), 7 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:25:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:51,337 INFO L93 Difference]: Finished difference Result 71136 states and 98127 transitions. [2022-07-12 12:25:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 12:25:51,338 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 13 states have internal predecessors, (121), 2 states have call successors, (30), 7 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2022-07-12 12:25:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:51,457 INFO L225 Difference]: With dead ends: 71136 [2022-07-12 12:25:51,458 INFO L226 Difference]: Without dead ends: 38494 [2022-07-12 12:25:51,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2022-07-12 12:25:51,525 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 894 mSDsluCounter, 3586 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:51,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 4393 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 12:25:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38494 states. [2022-07-12 12:25:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38494 to 33236. [2022-07-12 12:25:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33236 states, 24919 states have (on average 1.2986476182832376) internal successors, (32361), 25907 states have internal predecessors, (32361), 5284 states have call successors, (5284), 2433 states have call predecessors, (5284), 3032 states have return successors, (7251), 5399 states have call predecessors, (7251), 5283 states have call successors, (7251) [2022-07-12 12:25:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33236 states to 33236 states and 44896 transitions. [2022-07-12 12:25:53,163 INFO L78 Accepts]: Start accepts. Automaton has 33236 states and 44896 transitions. Word has length 140 [2022-07-12 12:25:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:53,164 INFO L495 AbstractCegarLoop]: Abstraction has 33236 states and 44896 transitions. [2022-07-12 12:25:53,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 13 states have internal predecessors, (121), 2 states have call successors, (30), 7 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:25:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 33236 states and 44896 transitions. [2022-07-12 12:25:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-12 12:25:53,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:53,184 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2022-07-12 12:25:53,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 12:25:53,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:53,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:53,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1257587451, now seen corresponding path program 1 times [2022-07-12 12:25:53,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:53,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884028261] [2022-07-12 12:25:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:53,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:25:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:25:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:25:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:25:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:25:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 12:25:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 12:25:53,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:53,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884028261] [2022-07-12 12:25:53,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884028261] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:25:53,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859140579] [2022-07-12 12:25:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:53,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:25:53,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:25:53,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 12:25:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:54,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:25:54,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:25:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 12:25:54,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:25:54,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859140579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:54,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:25:54,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-07-12 12:25:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657817193] [2022-07-12 12:25:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:54,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:25:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:25:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:25:54,214 INFO L87 Difference]: Start difference. First operand 33236 states and 44896 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 12:25:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:55,193 INFO L93 Difference]: Finished difference Result 51074 states and 68893 transitions. [2022-07-12 12:25:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:25:55,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 148 [2022-07-12 12:25:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:55,242 INFO L225 Difference]: With dead ends: 51074 [2022-07-12 12:25:55,242 INFO L226 Difference]: Without dead ends: 17796 [2022-07-12 12:25:55,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:25:55,535 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 761 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1296 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:25:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17796 states. [2022-07-12 12:25:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17796 to 17752. [2022-07-12 12:25:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17752 states, 13308 states have (on average 1.286819957920048) internal successors, (17125), 13813 states have internal predecessors, (17125), 2815 states have call successors, (2815), 1317 states have call predecessors, (2815), 1628 states have return successors, (3828), 2873 states have call predecessors, (3828), 2814 states have call successors, (3828) [2022-07-12 12:25:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17752 states to 17752 states and 23768 transitions. [2022-07-12 12:25:56,217 INFO L78 Accepts]: Start accepts. Automaton has 17752 states and 23768 transitions. Word has length 148 [2022-07-12 12:25:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:56,218 INFO L495 AbstractCegarLoop]: Abstraction has 17752 states and 23768 transitions. [2022-07-12 12:25:56,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 12:25:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 17752 states and 23768 transitions. [2022-07-12 12:25:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 12:25:56,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:56,232 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:56,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 12:25:56,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 12:25:56,451 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash 907067735, now seen corresponding path program 1 times [2022-07-12 12:25:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:56,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996007421] [2022-07-12 12:25:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:25:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:25:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:25:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:25:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:25:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 12:25:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:56,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996007421] [2022-07-12 12:25:56,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996007421] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:25:56,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895211939] [2022-07-12 12:25:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:56,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:25:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:25:56,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:25:56,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 12:25:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:57,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:25:57,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:25:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 12:25:57,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:25:57,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895211939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:57,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:25:57,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-12 12:25:57,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367473520] [2022-07-12 12:25:57,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:57,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:25:57,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:57,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:25:57,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:25:57,126 INFO L87 Difference]: Start difference. First operand 17752 states and 23768 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 12:25:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:25:57,938 INFO L93 Difference]: Finished difference Result 34068 states and 45773 transitions. [2022-07-12 12:25:57,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:25:57,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 150 [2022-07-12 12:25:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:25:57,984 INFO L225 Difference]: With dead ends: 34068 [2022-07-12 12:25:57,984 INFO L226 Difference]: Without dead ends: 17760 [2022-07-12 12:25:58,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:25:58,015 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 706 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:25:58,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 2115 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:25:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17760 states. [2022-07-12 12:25:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17760 to 17752. [2022-07-12 12:25:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17752 states, 13308 states have (on average 1.2835136759843704) internal successors, (17081), 13813 states have internal predecessors, (17081), 2815 states have call successors, (2815), 1317 states have call predecessors, (2815), 1628 states have return successors, (3828), 2873 states have call predecessors, (3828), 2814 states have call successors, (3828) [2022-07-12 12:25:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17752 states to 17752 states and 23724 transitions. [2022-07-12 12:25:58,747 INFO L78 Accepts]: Start accepts. Automaton has 17752 states and 23724 transitions. Word has length 150 [2022-07-12 12:25:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:25:58,747 INFO L495 AbstractCegarLoop]: Abstraction has 17752 states and 23724 transitions. [2022-07-12 12:25:58,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 12:25:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 17752 states and 23724 transitions. [2022-07-12 12:25:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 12:25:58,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:25:58,761 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:25:58,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 12:25:58,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 12:25:58,981 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:25:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:25:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash 969107349, now seen corresponding path program 1 times [2022-07-12 12:25:58,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:25:58,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738350406] [2022-07-12 12:25:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:25:58,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:25:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:25:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:25:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:25:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:25:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:25:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:25:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:25:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:25:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:25:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:25:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:25:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:25:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 12:25:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:25:59,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738350406] [2022-07-12 12:25:59,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738350406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:25:59,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:25:59,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:25:59,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468684579] [2022-07-12 12:25:59,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:25:59,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:25:59,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:25:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:25:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:25:59,200 INFO L87 Difference]: Start difference. First operand 17752 states and 23724 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 12:26:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:00,948 INFO L93 Difference]: Finished difference Result 37024 states and 49924 transitions. [2022-07-12 12:26:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:26:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 150 [2022-07-12 12:26:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:01,006 INFO L225 Difference]: With dead ends: 37024 [2022-07-12 12:26:01,007 INFO L226 Difference]: Without dead ends: 19290 [2022-07-12 12:26:01,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:26:01,038 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 1024 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:01,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 3153 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:26:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19290 states. [2022-07-12 12:26:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19290 to 17899. [2022-07-12 12:26:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17899 states, 13413 states have (on average 1.281294266756132) internal successors, (17186), 13918 states have internal predecessors, (17186), 2836 states have call successors, (2836), 1317 states have call predecessors, (2836), 1649 states have return successors, (3963), 2915 states have call predecessors, (3963), 2835 states have call successors, (3963) [2022-07-12 12:26:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17899 states to 17899 states and 23985 transitions. [2022-07-12 12:26:01,704 INFO L78 Accepts]: Start accepts. Automaton has 17899 states and 23985 transitions. Word has length 150 [2022-07-12 12:26:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:01,704 INFO L495 AbstractCegarLoop]: Abstraction has 17899 states and 23985 transitions. [2022-07-12 12:26:01,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 12:26:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 17899 states and 23985 transitions. [2022-07-12 12:26:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 12:26:01,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:01,717 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:01,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 12:26:01,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1277023387, now seen corresponding path program 1 times [2022-07-12 12:26:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:01,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864311270] [2022-07-12 12:26:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:26:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:26:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:26:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:26:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:02,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 12:26:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 12:26:02,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:02,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864311270] [2022-07-12 12:26:02,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864311270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:26:02,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:26:02,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:26:02,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139240603] [2022-07-12 12:26:02,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:26:02,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:26:02,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:02,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:26:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:26:02,029 INFO L87 Difference]: Start difference. First operand 17899 states and 23985 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:26:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:06,204 INFO L93 Difference]: Finished difference Result 37213 states and 50311 transitions. [2022-07-12 12:26:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:26:06,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 156 [2022-07-12 12:26:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:06,257 INFO L225 Difference]: With dead ends: 37213 [2022-07-12 12:26:06,258 INFO L226 Difference]: Without dead ends: 19332 [2022-07-12 12:26:06,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:26:06,284 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 507 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:06,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 2998 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 12:26:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19332 states. [2022-07-12 12:26:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19332 to 17941. [2022-07-12 12:26:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17941 states, 13455 states have (on average 1.2804162021553327) internal successors, (17228), 13960 states have internal predecessors, (17228), 2836 states have call successors, (2836), 1317 states have call predecessors, (2836), 1649 states have return successors, (3963), 2915 states have call predecessors, (3963), 2835 states have call successors, (3963) [2022-07-12 12:26:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17941 states to 17941 states and 24027 transitions. [2022-07-12 12:26:06,913 INFO L78 Accepts]: Start accepts. Automaton has 17941 states and 24027 transitions. Word has length 156 [2022-07-12 12:26:06,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:06,914 INFO L495 AbstractCegarLoop]: Abstraction has 17941 states and 24027 transitions. [2022-07-12 12:26:06,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:26:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 17941 states and 24027 transitions. [2022-07-12 12:26:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 12:26:06,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:06,939 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:06,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 12:26:06,939 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash -366564478, now seen corresponding path program 1 times [2022-07-12 12:26:06,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:06,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076500960] [2022-07-12 12:26:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:26:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:26:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:26:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:26:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:26:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:26:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 12:26:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 12:26:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-12 12:26:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:07,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076500960] [2022-07-12 12:26:07,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076500960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:07,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020688633] [2022-07-12 12:26:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:07,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:07,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:26:07,305 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:26:07,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 12:26:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:07,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-12 12:26:07,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:26:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-12 12:26:08,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:26:08,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020688633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:26:08,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:26:08,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-12 12:26:08,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858416703] [2022-07-12 12:26:08,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:26:08,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 12:26:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 12:26:08,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-12 12:26:08,062 INFO L87 Difference]: Start difference. First operand 17941 states and 24027 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 12:26:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:11,609 INFO L93 Difference]: Finished difference Result 48183 states and 65037 transitions. [2022-07-12 12:26:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 12:26:11,609 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2022-07-12 12:26:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:11,701 INFO L225 Difference]: With dead ends: 48183 [2022-07-12 12:26:11,701 INFO L226 Difference]: Without dead ends: 30220 [2022-07-12 12:26:11,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 12:26:11,741 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 2581 mSDsluCounter, 8911 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 10178 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:11,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 10178 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 12:26:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30220 states. [2022-07-12 12:26:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30220 to 24838. [2022-07-12 12:26:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24838 states, 18702 states have (on average 1.279114533205005) internal successors, (23922), 19329 states have internal predecessors, (23922), 3874 states have call successors, (3874), 1908 states have call predecessors, (3874), 2261 states have return successors, (5100), 3930 states have call predecessors, (5100), 3873 states have call successors, (5100) [2022-07-12 12:26:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24838 states to 24838 states and 32896 transitions. [2022-07-12 12:26:13,083 INFO L78 Accepts]: Start accepts. Automaton has 24838 states and 32896 transitions. Word has length 158 [2022-07-12 12:26:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:13,083 INFO L495 AbstractCegarLoop]: Abstraction has 24838 states and 32896 transitions. [2022-07-12 12:26:13,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 12:26:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24838 states and 32896 transitions. [2022-07-12 12:26:13,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 12:26:13,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:13,095 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:13,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 12:26:13,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:13,315 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash 543401993, now seen corresponding path program 1 times [2022-07-12 12:26:13,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456597932] [2022-07-12 12:26:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:13,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:26:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:26:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:26:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:26:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:26:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 12:26:13,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456597932] [2022-07-12 12:26:13,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456597932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:26:13,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:26:13,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:26:13,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250485855] [2022-07-12 12:26:13,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:26:13,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:26:13,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:26:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:26:13,586 INFO L87 Difference]: Start difference. First operand 24838 states and 32896 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:26:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:18,075 INFO L93 Difference]: Finished difference Result 52132 states and 69777 transitions. [2022-07-12 12:26:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:26:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 157 [2022-07-12 12:26:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:18,146 INFO L225 Difference]: With dead ends: 52132 [2022-07-12 12:26:18,146 INFO L226 Difference]: Without dead ends: 27312 [2022-07-12 12:26:18,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:26:18,182 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 512 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:18,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 2987 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 12:26:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27312 states. [2022-07-12 12:26:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27312 to 24883. [2022-07-12 12:26:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24883 states, 18747 states have (on average 1.2784445511281806) internal successors, (23967), 19374 states have internal predecessors, (23967), 3874 states have call successors, (3874), 1908 states have call predecessors, (3874), 2261 states have return successors, (5100), 3930 states have call predecessors, (5100), 3873 states have call successors, (5100) [2022-07-12 12:26:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24883 states to 24883 states and 32941 transitions. [2022-07-12 12:26:19,566 INFO L78 Accepts]: Start accepts. Automaton has 24883 states and 32941 transitions. Word has length 157 [2022-07-12 12:26:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:19,566 INFO L495 AbstractCegarLoop]: Abstraction has 24883 states and 32941 transitions. [2022-07-12 12:26:19,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:26:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 24883 states and 32941 transitions. [2022-07-12 12:26:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 12:26:19,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:19,578 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:19,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 12:26:19,578 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:19,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash -477869803, now seen corresponding path program 1 times [2022-07-12 12:26:19,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:19,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187438990] [2022-07-12 12:26:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:19,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:26:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:26:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:26:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 12:26:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 12:26:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187438990] [2022-07-12 12:26:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187438990] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047681523] [2022-07-12 12:26:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:19,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:19,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:26:19,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:26:19,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 12:26:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:20,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 12:26:20,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:26:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 12:26:20,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:26:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 12:26:20,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047681523] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:20,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:26:20,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 12 [2022-07-12 12:26:20,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766581527] [2022-07-12 12:26:20,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:26:20,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:26:20,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:26:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:26:20,559 INFO L87 Difference]: Start difference. First operand 24883 states and 32941 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:26:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:21,777 INFO L93 Difference]: Finished difference Result 49793 states and 66129 transitions. [2022-07-12 12:26:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:26:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 158 [2022-07-12 12:26:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:21,832 INFO L225 Difference]: With dead ends: 49793 [2022-07-12 12:26:21,832 INFO L226 Difference]: Without dead ends: 24928 [2022-07-12 12:26:21,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:26:21,863 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 10 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:21,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:26:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24928 states. [2022-07-12 12:26:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24928 to 24928. [2022-07-12 12:26:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24928 states, 18792 states have (on average 1.2777777777777777) internal successors, (24012), 19419 states have internal predecessors, (24012), 3874 states have call successors, (3874), 1908 states have call predecessors, (3874), 2261 states have return successors, (5100), 3930 states have call predecessors, (5100), 3873 states have call successors, (5100) [2022-07-12 12:26:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24928 states to 24928 states and 32986 transitions. [2022-07-12 12:26:22,875 INFO L78 Accepts]: Start accepts. Automaton has 24928 states and 32986 transitions. Word has length 158 [2022-07-12 12:26:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:22,876 INFO L495 AbstractCegarLoop]: Abstraction has 24928 states and 32986 transitions. [2022-07-12 12:26:22,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:26:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 24928 states and 32986 transitions. [2022-07-12 12:26:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 12:26:22,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:22,887 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:22,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 12:26:23,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-12 12:26:23,104 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1014328261, now seen corresponding path program 1 times [2022-07-12 12:26:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:23,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469217677] [2022-07-12 12:26:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:26:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:26:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 12:26:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 12:26:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 12:26:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 12:26:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:23,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469217677] [2022-07-12 12:26:23,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469217677] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:23,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764808357] [2022-07-12 12:26:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:26:23,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:26:23,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 12:26:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:24,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 12:26:24,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:26:24,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-07-12 12:26:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 12:26:24,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:26:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 12:26:24,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764808357] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:26:24,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:26:24,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-07-12 12:26:24,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468681905] [2022-07-12 12:26:24,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:26:24,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 12:26:24,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:24,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 12:26:24,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-12 12:26:24,279 INFO L87 Difference]: Start difference. First operand 24928 states and 32986 transitions. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 10 states have internal predecessors, (150), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:26:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:27,325 INFO L93 Difference]: Finished difference Result 52357 states and 70047 transitions. [2022-07-12 12:26:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:26:27,325 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 10 states have internal predecessors, (150), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2022-07-12 12:26:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:27,402 INFO L225 Difference]: With dead ends: 52357 [2022-07-12 12:26:27,403 INFO L226 Difference]: Without dead ends: 27447 [2022-07-12 12:26:27,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-07-12 12:26:27,448 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 533 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:27,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 4682 Invalid, 2327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 12:26:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27447 states. [2022-07-12 12:26:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27447 to 25018. [2022-07-12 12:26:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25018 states, 18882 states have (on average 1.2764537654909438) internal successors, (24102), 19509 states have internal predecessors, (24102), 3874 states have call successors, (3874), 1908 states have call predecessors, (3874), 2261 states have return successors, (5100), 3930 states have call predecessors, (5100), 3873 states have call successors, (5100) [2022-07-12 12:26:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 33076 transitions. [2022-07-12 12:26:28,666 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 33076 transitions. Word has length 159 [2022-07-12 12:26:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:28,666 INFO L495 AbstractCegarLoop]: Abstraction has 25018 states and 33076 transitions. [2022-07-12 12:26:28,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 10 states have internal predecessors, (150), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:26:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 33076 transitions. [2022-07-12 12:26:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 12:26:28,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:28,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:28,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 12:26:28,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:28,883 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash 719205257, now seen corresponding path program 2 times [2022-07-12 12:26:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:28,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450026977] [2022-07-12 12:26:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:26:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:26:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:26:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 12:26:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 12:26:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 12:26:29,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450026977] [2022-07-12 12:26:29,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450026977] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067176073] [2022-07-12 12:26:29,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:26:29,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:26:29,200 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:26:29,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 12:26:30,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:26:30,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:26:30,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 12:26:30,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:26:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 12:26:30,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:26:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 12:26:30,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067176073] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:26:30,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:26:30,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 5] total 15 [2022-07-12 12:26:30,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647992069] [2022-07-12 12:26:30,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:26:30,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 12:26:30,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 12:26:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-12 12:26:30,231 INFO L87 Difference]: Start difference. First operand 25018 states and 33076 transitions. Second operand has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 11 states have internal predecessors, (148), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:26:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:35,257 INFO L93 Difference]: Finished difference Result 53437 states and 71601 transitions. [2022-07-12 12:26:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 12:26:35,257 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 11 states have internal predecessors, (148), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 161 [2022-07-12 12:26:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:35,323 INFO L225 Difference]: With dead ends: 53437 [2022-07-12 12:26:35,323 INFO L226 Difference]: Without dead ends: 28437 [2022-07-12 12:26:35,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-07-12 12:26:35,356 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 804 mSDsluCounter, 5055 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 5873 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:35,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 5873 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 12:26:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28437 states. [2022-07-12 12:26:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28437 to 25198. [2022-07-12 12:26:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25198 states, 19062 states have (on average 1.2762039660056657) internal successors, (24327), 19689 states have internal predecessors, (24327), 3874 states have call successors, (3874), 1908 states have call predecessors, (3874), 2261 states have return successors, (5100), 3930 states have call predecessors, (5100), 3873 states have call successors, (5100) [2022-07-12 12:26:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25198 states to 25198 states and 33301 transitions. [2022-07-12 12:26:36,510 INFO L78 Accepts]: Start accepts. Automaton has 25198 states and 33301 transitions. Word has length 161 [2022-07-12 12:26:36,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:36,510 INFO L495 AbstractCegarLoop]: Abstraction has 25198 states and 33301 transitions. [2022-07-12 12:26:36,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 11 states have internal predecessors, (148), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:26:36,510 INFO L276 IsEmpty]: Start isEmpty. Operand 25198 states and 33301 transitions. [2022-07-12 12:26:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 12:26:36,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:36,522 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:36,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 12:26:36,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-12 12:26:36,735 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash -629312247, now seen corresponding path program 3 times [2022-07-12 12:26:36,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:36,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637102381] [2022-07-12 12:26:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:36,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:26:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:26:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 12:26:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 12:26:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 12:26:37,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:37,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637102381] [2022-07-12 12:26:37,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637102381] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:37,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644754827] [2022-07-12 12:26:37,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 12:26:37,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:26:37,152 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:26:37,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 12:26:38,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 12:26:38,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:26:38,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 12:26:38,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:26:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 12:26:38,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:26:38,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644754827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:26:38,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:26:38,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2022-07-12 12:26:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462502738] [2022-07-12 12:26:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:26:38,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 12:26:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 12:26:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-12 12:26:38,395 INFO L87 Difference]: Start difference. First operand 25198 states and 33301 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 12:26:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:42,696 INFO L93 Difference]: Finished difference Result 71413 states and 95797 transitions. [2022-07-12 12:26:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 12:26:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 163 [2022-07-12 12:26:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:42,809 INFO L225 Difference]: With dead ends: 71413 [2022-07-12 12:26:42,809 INFO L226 Difference]: Without dead ends: 48099 [2022-07-12 12:26:42,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 12:26:42,857 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 2668 mSDsluCounter, 8804 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 10077 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:42,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 10077 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 12:26:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48099 states. [2022-07-12 12:26:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48099 to 35938. [2022-07-12 12:26:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35938 states, 27288 states have (on average 1.2768616241571387) internal successors, (34843), 28108 states have internal predecessors, (34843), 5509 states have call successors, (5509), 2760 states have call predecessors, (5509), 3140 states have return successors, (6876), 5516 states have call predecessors, (6876), 5508 states have call successors, (6876) [2022-07-12 12:26:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35938 states to 35938 states and 47228 transitions. [2022-07-12 12:26:44,730 INFO L78 Accepts]: Start accepts. Automaton has 35938 states and 47228 transitions. Word has length 163 [2022-07-12 12:26:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:44,730 INFO L495 AbstractCegarLoop]: Abstraction has 35938 states and 47228 transitions. [2022-07-12 12:26:44,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 12:26:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35938 states and 47228 transitions. [2022-07-12 12:26:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 12:26:44,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:44,749 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 3, 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] [2022-07-12 12:26:44,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 12:26:44,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-12 12:26:44,954 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:44,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1736610279, now seen corresponding path program 1 times [2022-07-12 12:26:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658595142] [2022-07-12 12:26:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:26:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:26:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:26:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:26:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:26:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:26:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 12:26:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 12:26:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 12:26:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 12:26:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-12 12:26:45,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658595142] [2022-07-12 12:26:45,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658595142] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537350391] [2022-07-12 12:26:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:45,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:45,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:26:45,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:26:45,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 12:26:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:45,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2073 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 12:26:45,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:26:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-12 12:26:45,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:26:45,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537350391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:26:45,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:26:45,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 12 [2022-07-12 12:26:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574080407] [2022-07-12 12:26:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:26:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:26:45,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:45,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:26:45,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:26:45,947 INFO L87 Difference]: Start difference. First operand 35938 states and 47228 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:26:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:26:48,966 INFO L93 Difference]: Finished difference Result 79582 states and 106219 transitions. [2022-07-12 12:26:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:26:48,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 179 [2022-07-12 12:26:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:26:49,079 INFO L225 Difference]: With dead ends: 79582 [2022-07-12 12:26:49,080 INFO L226 Difference]: Without dead ends: 43662 [2022-07-12 12:26:49,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:26:49,141 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 463 mSDsluCounter, 4116 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:26:49,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 5267 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 12:26:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43662 states. [2022-07-12 12:26:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43662 to 36136. [2022-07-12 12:26:51,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36136 states, 27486 states have (on average 1.274867205122608) internal successors, (35041), 28240 states have internal predecessors, (35041), 5509 states have call successors, (5509), 2760 states have call predecessors, (5509), 3140 states have return successors, (6876), 5582 states have call predecessors, (6876), 5508 states have call successors, (6876) [2022-07-12 12:26:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36136 states to 36136 states and 47426 transitions. [2022-07-12 12:26:51,294 INFO L78 Accepts]: Start accepts. Automaton has 36136 states and 47426 transitions. Word has length 179 [2022-07-12 12:26:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:26:51,295 INFO L495 AbstractCegarLoop]: Abstraction has 36136 states and 47426 transitions. [2022-07-12 12:26:51,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:26:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 36136 states and 47426 transitions. [2022-07-12 12:26:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-12 12:26:51,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:26:51,314 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:26:51,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 12:26:51,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 12:26:51,533 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:26:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:26:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash 477329836, now seen corresponding path program 1 times [2022-07-12 12:26:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:26:51,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385924264] [2022-07-12 12:26:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:26:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:51,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:51,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:26:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:26:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:51,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:26:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:26:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:26:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 12:26:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:26:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:26:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 12:26:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:26:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 12:26:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 12:26:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 12:26:52,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:26:52,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385924264] [2022-07-12 12:26:52,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385924264] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:26:52,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446171520] [2022-07-12 12:26:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:26:52,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:26:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:26:52,072 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:26:52,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 12:26:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:26:52,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 12:26:52,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:26:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 12:26:52,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:26:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 12:26:53,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446171520] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:26:53,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:26:53,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 8] total 19 [2022-07-12 12:26:53,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173179579] [2022-07-12 12:26:53,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:26:53,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 12:26:53,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:26:53,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 12:26:53,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-07-12 12:26:53,074 INFO L87 Difference]: Start difference. First operand 36136 states and 47426 transitions. Second operand has 19 states, 19 states have (on average 8.894736842105264) internal successors, (169), 14 states have internal predecessors, (169), 2 states have call successors, (37), 7 states have call predecessors, (37), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25)