./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 99f9870c0a11847528222b5446256dd4069d375e1dee3e428847b909838b4c1b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:34:50,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:34:50,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:34:50,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:34:50,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:34:50,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:34:50,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:34:50,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:34:50,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:34:50,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:34:50,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:34:50,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:34:50,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:34:50,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:34:50,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:34:50,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:34:50,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:34:50,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:34:50,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:34:50,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:34:50,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:34:50,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:34:50,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:34:50,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:34:50,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:34:50,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:34:50,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:34:50,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:34:50,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:34:50,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:34:50,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:34:50,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:34:50,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:34:50,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:34:50,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:34:50,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:34:50,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:34:50,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:34:50,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:34:50,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:34:50,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:34:50,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:34:50,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:34:50,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:34:50,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:34:50,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:34:50,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:34:50,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:34:50,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:34:50,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:34:50,986 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:34:50,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:34:50,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:34:50,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:34:50,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:34:50,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:34:50,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:34:50,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:34:50,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:34:50,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:34:50,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:34:50,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:34:50,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:34:50,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:34:50,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:34:50,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:34:50,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:34:50,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:34:50,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:34:50,993 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:34:50,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:34:50,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:34:50,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:34:50,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f9870c0a11847528222b5446256dd4069d375e1dee3e428847b909838b4c1b [2021-12-22 14:34:51,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:34:51,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:34:51,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:34:51,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:34:51,221 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:34:51,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2021-12-22 14:34:51,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1a33179/8c2cf886ac7048669c862797568abd6a/FLAG798bc4be4 [2021-12-22 14:34:51,777 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:34:51,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2021-12-22 14:34:51,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1a33179/8c2cf886ac7048669c862797568abd6a/FLAG798bc4be4 [2021-12-22 14:34:52,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1a33179/8c2cf886ac7048669c862797568abd6a [2021-12-22 14:34:52,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:34:52,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:34:52,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:34:52,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:34:52,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:34:52,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:34:52" (1/1) ... [2021-12-22 14:34:52,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464fdef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:52, skipping insertion in model container [2021-12-22 14:34:52,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:34:52" (1/1) ... [2021-12-22 14:34:52,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:34:52,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:34:52,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i[164521,164534] [2021-12-22 14:34:52,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:34:52,952 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:34:53,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i[164521,164534] [2021-12-22 14:34:53,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:34:53,210 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:34:53,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53 WrapperNode [2021-12-22 14:34:53,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:34:53,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:34:53,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:34:53,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:34:53,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,388 INFO L137 Inliner]: procedures = 157, calls = 675, calls flagged for inlining = 60, calls inlined = 51, statements flattened = 1529 [2021-12-22 14:34:53,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:34:53,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:34:53,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:34:53,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:34:53,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:34:53,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:34:53,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:34:53,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:34:53,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (1/1) ... [2021-12-22 14:34:53,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:34:53,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:34:53,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:34:53,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:34:53,629 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2021-12-22 14:34:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2021-12-22 14:34:53,630 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2021-12-22 14:34:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2021-12-22 14:34:53,630 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2021-12-22 14:34:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2021-12-22 14:34:53,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:34:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-12-22 14:34:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-12-22 14:34:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2021-12-22 14:34:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2021-12-22 14:34:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:34:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:34:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:34:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:34:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:34:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_send_skb [2021-12-22 14:34:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_send_skb [2021-12-22 14:34:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2021-12-22 14:34:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2021-12-22 14:34:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-22 14:34:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-22 14:34:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2021-12-22 14:34:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2021-12-22 14:34:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:34:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:34:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:34:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:34:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:34:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:34:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-22 14:34:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-22 14:34:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2021-12-22 14:34:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2021-12-22 14:34:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2021-12-22 14:34:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2021-12-22 14:34:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 14:34:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 14:34:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2021-12-22 14:34:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2021-12-22 14:34:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2021-12-22 14:34:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2021-12-22 14:34:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:34:53,635 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:34:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:34:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:34:53,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:34:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:34:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:34:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2021-12-22 14:34:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2021-12-22 14:34:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2021-12-22 14:34:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2021-12-22 14:34:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:34:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:34:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2021-12-22 14:34:53,637 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2021-12-22 14:34:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:34:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-22 14:34:53,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-22 14:34:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-12-22 14:34:53,639 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-12-22 14:34:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:34:53,639 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:34:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2021-12-22 14:34:53,639 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2021-12-22 14:34:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:34:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2021-12-22 14:34:53,640 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2021-12-22 14:34:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2021-12-22 14:34:53,640 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2021-12-22 14:34:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-22 14:34:53,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-22 14:34:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:34:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:34:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2021-12-22 14:34:53,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2021-12-22 14:34:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:34:53,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:34:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2021-12-22 14:34:53,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2021-12-22 14:34:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:34:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-12-22 14:34:53,642 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-12-22 14:34:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-22 14:34:53,642 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-22 14:34:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2021-12-22 14:34:53,642 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2021-12-22 14:34:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2021-12-22 14:34:53,642 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2021-12-22 14:34:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2021-12-22 14:34:53,643 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2021-12-22 14:34:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:34:53,643 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:34:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:34:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:34:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_17 [2021-12-22 14:34:53,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_17 [2021-12-22 14:34:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_input [2021-12-22 14:34:53,644 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_input [2021-12-22 14:34:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:34:53,645 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:34:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:34:53,645 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:34:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure set_value [2021-12-22 14:34:53,645 INFO L138 BoogieDeclarations]: Found implementation of procedure set_value [2021-12-22 14:34:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure tiocm_to_gigaset [2021-12-22 14:34:53,646 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocm_to_gigaset [2021-12-22 14:34:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-22 14:34:53,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-22 14:34:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:34:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:34:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:34:53,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:34:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2021-12-22 14:34:53,647 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2021-12-22 14:34:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:34:53,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:34:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_read_int_callback [2021-12-22 14:34:53,649 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_read_int_callback [2021-12-22 14:34:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2021-12-22 14:34:53,650 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2021-12-22 14:34:53,988 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:34:53,990 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:34:54,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:34:54,559 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-22 14:34:55,386 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:34:55,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:34:55,395 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:34:55,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:34:55 BoogieIcfgContainer [2021-12-22 14:34:55,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:34:55,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:34:55,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:34:55,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:34:55,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:34:52" (1/3) ... [2021-12-22 14:34:55,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f83d2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:34:55, skipping insertion in model container [2021-12-22 14:34:55,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:53" (2/3) ... [2021-12-22 14:34:55,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f83d2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:34:55, skipping insertion in model container [2021-12-22 14:34:55,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:34:55" (3/3) ... [2021-12-22 14:34:55,403 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2021-12-22 14:34:55,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:34:55,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:34:55,453 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:34:55,459 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:34:55,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:34:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 734 states, 514 states have (on average 1.3696498054474708) internal successors, (704), 538 states have internal predecessors, (704), 167 states have call successors, (167), 53 states have call predecessors, (167), 51 states have return successors, (161), 156 states have call predecessors, (161), 161 states have call successors, (161) [2021-12-22 14:34:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 14:34:55,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:55,516 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:55,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:55,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -611998495, now seen corresponding path program 1 times [2021-12-22 14:34:55,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:55,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517604764] [2021-12-22 14:34:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:55,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:34:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:34:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:34:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:34:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:34:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:34:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:34:56,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:56,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517604764] [2021-12-22 14:34:56,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517604764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:56,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:34:56,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:34:56,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297367815] [2021-12-22 14:34:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:56,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:34:56,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:34:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:34:56,059 INFO L87 Difference]: Start difference. First operand has 734 states, 514 states have (on average 1.3696498054474708) internal successors, (704), 538 states have internal predecessors, (704), 167 states have call successors, (167), 53 states have call predecessors, (167), 51 states have return successors, (161), 156 states have call predecessors, (161), 161 states have call successors, (161) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:34:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:58,019 INFO L93 Difference]: Finished difference Result 2243 states and 3222 transitions. [2021-12-22 14:34:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:34:58,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-12-22 14:34:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:58,058 INFO L225 Difference]: With dead ends: 2243 [2021-12-22 14:34:58,059 INFO L226 Difference]: Without dead ends: 1492 [2021-12-22 14:34:58,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:34:58,078 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 1402 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:58,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 2105 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:34:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-12-22 14:34:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1382. [2021-12-22 14:34:58,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 975 states have (on average 1.357948717948718) internal successors, (1324), 1002 states have internal predecessors, (1324), 306 states have call successors, (306), 101 states have call predecessors, (306), 100 states have return successors, (301), 291 states have call predecessors, (301), 301 states have call successors, (301) [2021-12-22 14:34:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1931 transitions. [2021-12-22 14:34:58,204 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1931 transitions. Word has length 56 [2021-12-22 14:34:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:58,204 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1931 transitions. [2021-12-22 14:34:58,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:34:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1931 transitions. [2021-12-22 14:34:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-22 14:34:58,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:58,207 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:58,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:34:58,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -63449944, now seen corresponding path program 1 times [2021-12-22 14:34:58,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:58,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722183465] [2021-12-22 14:34:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:58,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:34:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:34:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:34:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:34:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:34:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:34:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:34:58,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:58,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722183465] [2021-12-22 14:34:58,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722183465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:58,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:34:58,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:34:58,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428424158] [2021-12-22 14:34:58,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:58,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:34:58,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:58,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:34:58,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:34:58,445 INFO L87 Difference]: Start difference. First operand 1382 states and 1931 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:00,612 INFO L93 Difference]: Finished difference Result 4455 states and 6379 transitions. [2021-12-22 14:35:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:35:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-12-22 14:35:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:00,625 INFO L225 Difference]: With dead ends: 4455 [2021-12-22 14:35:00,626 INFO L226 Difference]: Without dead ends: 3088 [2021-12-22 14:35:00,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:00,632 INFO L933 BasicCegarLoop]: 1081 mSDtfsCounter, 2086 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1041 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:00,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2207 Valid, 2144 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1041 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 14:35:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2021-12-22 14:35:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 2790. [2021-12-22 14:35:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 1971 states have (on average 1.3546423135464232) internal successors, (2670), 2021 states have internal predecessors, (2670), 608 states have call successors, (608), 201 states have call predecessors, (608), 210 states have return successors, (659), 593 states have call predecessors, (659), 603 states have call successors, (659) [2021-12-22 14:35:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3937 transitions. [2021-12-22 14:35:00,715 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3937 transitions. Word has length 59 [2021-12-22 14:35:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:00,716 INFO L470 AbstractCegarLoop]: Abstraction has 2790 states and 3937 transitions. [2021-12-22 14:35:00,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3937 transitions. [2021-12-22 14:35:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-22 14:35:00,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:00,725 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:00,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:35:00,725 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1967362599, now seen corresponding path program 1 times [2021-12-22 14:35:00,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:00,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654050261] [2021-12-22 14:35:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:00,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:00,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:00,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:35:00,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:00,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654050261] [2021-12-22 14:35:00,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654050261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:00,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:00,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:00,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603533477] [2021-12-22 14:35:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:00,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:00,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:00,901 INFO L87 Difference]: Start difference. First operand 2790 states and 3937 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:03,472 INFO L93 Difference]: Finished difference Result 8907 states and 12903 transitions. [2021-12-22 14:35:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:35:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2021-12-22 14:35:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:03,506 INFO L225 Difference]: With dead ends: 8907 [2021-12-22 14:35:03,506 INFO L226 Difference]: Without dead ends: 6132 [2021-12-22 14:35:03,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:03,522 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 1499 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:03,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1626 Valid, 2585 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 14:35:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2021-12-22 14:35:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 5599. [2021-12-22 14:35:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 3956 states have (on average 1.3503538928210312) internal successors, (5342), 4052 states have internal predecessors, (5342), 1212 states have call successors, (1212), 401 states have call predecessors, (1212), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2021-12-22 14:35:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 7977 transitions. [2021-12-22 14:35:03,765 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 7977 transitions. Word has length 60 [2021-12-22 14:35:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:03,766 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 7977 transitions. [2021-12-22 14:35:03,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 7977 transitions. [2021-12-22 14:35:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-22 14:35:03,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:03,768 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:03,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:35:03,768 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash -859107893, now seen corresponding path program 1 times [2021-12-22 14:35:03,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:03,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239087080] [2021-12-22 14:35:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:03,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:03,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:03,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:35:03,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:03,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239087080] [2021-12-22 14:35:03,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239087080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:03,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:03,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:03,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451498016] [2021-12-22 14:35:03,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:03,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:03,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:03,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:03,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:03,963 INFO L87 Difference]: Start difference. First operand 5599 states and 7977 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:05,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:05,840 INFO L93 Difference]: Finished difference Result 6130 states and 8816 transitions. [2021-12-22 14:35:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:35:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2021-12-22 14:35:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:05,870 INFO L225 Difference]: With dead ends: 6130 [2021-12-22 14:35:05,870 INFO L226 Difference]: Without dead ends: 6127 [2021-12-22 14:35:05,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:05,875 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 2048 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 997 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 997 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:05,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 2200 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [997 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 14:35:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2021-12-22 14:35:06,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 5600. [2021-12-22 14:35:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 3957 states have (on average 1.350265352539803) internal successors, (5343), 4053 states have internal predecessors, (5343), 1212 states have call successors, (1212), 401 states have call predecessors, (1212), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2021-12-22 14:35:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 7978 transitions. [2021-12-22 14:35:06,079 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 7978 transitions. Word has length 61 [2021-12-22 14:35:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:06,081 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 7978 transitions. [2021-12-22 14:35:06,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 7978 transitions. [2021-12-22 14:35:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-22 14:35:06,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:06,084 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:06,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:35:06,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:06,085 INFO L85 PathProgramCache]: Analyzing trace with hash -862945508, now seen corresponding path program 1 times [2021-12-22 14:35:06,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:06,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997109441] [2021-12-22 14:35:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:06,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:35:06,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997109441] [2021-12-22 14:35:06,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997109441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:06,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:06,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:06,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97751468] [2021-12-22 14:35:06,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:06,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:06,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:06,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:06,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:06,230 INFO L87 Difference]: Start difference. First operand 5600 states and 7978 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:07,332 INFO L93 Difference]: Finished difference Result 6126 states and 8812 transitions. [2021-12-22 14:35:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:35:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2021-12-22 14:35:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:07,359 INFO L225 Difference]: With dead ends: 6126 [2021-12-22 14:35:07,359 INFO L226 Difference]: Without dead ends: 6123 [2021-12-22 14:35:07,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:07,365 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 1472 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:07,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 1322 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:35:07,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2021-12-22 14:35:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 5599. [2021-12-22 14:35:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 3957 states have (on average 1.3500126358352287) internal successors, (5342), 4052 states have internal predecessors, (5342), 1211 states have call successors, (1211), 401 states have call predecessors, (1211), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2021-12-22 14:35:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 7976 transitions. [2021-12-22 14:35:07,554 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 7976 transitions. Word has length 62 [2021-12-22 14:35:07,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:07,554 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 7976 transitions. [2021-12-22 14:35:07,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 7976 transitions. [2021-12-22 14:35:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 14:35:07,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:07,557 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:07,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:35:07,557 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:07,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:07,558 INFO L85 PathProgramCache]: Analyzing trace with hash -981906706, now seen corresponding path program 1 times [2021-12-22 14:35:07,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:07,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123860746] [2021-12-22 14:35:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:07,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:07,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:35:07,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:07,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123860746] [2021-12-22 14:35:07,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123860746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:07,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:07,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514430337] [2021-12-22 14:35:07,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:07,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:07,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:07,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:07,679 INFO L87 Difference]: Start difference. First operand 5599 states and 7976 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:09,220 INFO L93 Difference]: Finished difference Result 6125 states and 8810 transitions. [2021-12-22 14:35:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:35:09,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2021-12-22 14:35:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:09,271 INFO L225 Difference]: With dead ends: 6125 [2021-12-22 14:35:09,287 INFO L226 Difference]: Without dead ends: 6103 [2021-12-22 14:35:09,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:09,292 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 1178 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:09,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 1656 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:35:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6103 states. [2021-12-22 14:35:09,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6103 to 5579. [2021-12-22 14:35:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5579 states, 3940 states have (on average 1.35) internal successors, (5319), 4034 states have internal predecessors, (5319), 1209 states have call successors, (1209), 400 states have call predecessors, (1209), 429 states have return successors, (1422), 1196 states have call predecessors, (1422), 1206 states have call successors, (1422) [2021-12-22 14:35:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5579 states to 5579 states and 7950 transitions. [2021-12-22 14:35:09,606 INFO L78 Accepts]: Start accepts. Automaton has 5579 states and 7950 transitions. Word has length 63 [2021-12-22 14:35:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:09,608 INFO L470 AbstractCegarLoop]: Abstraction has 5579 states and 7950 transitions. [2021-12-22 14:35:09,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:35:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5579 states and 7950 transitions. [2021-12-22 14:35:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-22 14:35:09,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:09,619 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:09,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:35:09,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:09,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash 810077961, now seen corresponding path program 1 times [2021-12-22 14:35:09,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:09,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809699176] [2021-12-22 14:35:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:09,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:35:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 14:35:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:35:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 14:35:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:35:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:35:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:35:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 14:35:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:35:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:35:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:35:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:35:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 14:35:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 14:35:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-22 14:35:09,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:09,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809699176] [2021-12-22 14:35:09,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809699176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:09,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:09,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:35:09,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143733187] [2021-12-22 14:35:09,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:09,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:35:09,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:09,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:35:09,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:35:09,885 INFO L87 Difference]: Start difference. First operand 5579 states and 7950 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 8 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 14:35:14,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:14,249 INFO L93 Difference]: Finished difference Result 15750 states and 22380 transitions. [2021-12-22 14:35:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 14:35:14,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 8 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 173 [2021-12-22 14:35:14,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:14,287 INFO L225 Difference]: With dead ends: 15750 [2021-12-22 14:35:14,287 INFO L226 Difference]: Without dead ends: 10186 [2021-12-22 14:35:14,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-12-22 14:35:14,305 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 3225 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 2130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3293 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 3815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2130 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:14,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3293 Valid, 3460 Invalid, 3815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2130 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-22 14:35:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2021-12-22 14:35:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 8815. [2021-12-22 14:35:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 6240 states have (on average 1.3532051282051283) internal successors, (8444), 6366 states have internal predecessors, (8444), 1831 states have call successors, (1831), 672 states have call predecessors, (1831), 743 states have return successors, (1994), 1848 states have call predecessors, (1994), 1828 states have call successors, (1994) [2021-12-22 14:35:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 12269 transitions. [2021-12-22 14:35:14,703 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 12269 transitions. Word has length 173 [2021-12-22 14:35:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:14,703 INFO L470 AbstractCegarLoop]: Abstraction has 8815 states and 12269 transitions. [2021-12-22 14:35:14,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 8 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 14:35:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 12269 transitions. [2021-12-22 14:35:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-22 14:35:14,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:14,715 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:14,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:35:14,719 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:14,720 INFO L85 PathProgramCache]: Analyzing trace with hash 862855761, now seen corresponding path program 1 times [2021-12-22 14:35:14,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:14,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328155664] [2021-12-22 14:35:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:14,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:35:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:35:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 14:35:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 14:35:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 14:35:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 14:35:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:35:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:35:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:35:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:35:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 14:35:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-22 14:35:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 14:35:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-22 14:35:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-22 14:35:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-22 14:35:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-22 14:35:15,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:15,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328155664] [2021-12-22 14:35:15,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328155664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:15,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:15,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:35:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401606311] [2021-12-22 14:35:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:15,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:35:15,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:15,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:35:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:35:15,065 INFO L87 Difference]: Start difference. First operand 8815 states and 12269 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 14:35:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:19,720 INFO L93 Difference]: Finished difference Result 20675 states and 29626 transitions. [2021-12-22 14:35:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 14:35:19,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2021-12-22 14:35:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:19,766 INFO L225 Difference]: With dead ends: 20675 [2021-12-22 14:35:19,766 INFO L226 Difference]: Without dead ends: 11875 [2021-12-22 14:35:19,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2021-12-22 14:35:19,795 INFO L933 BasicCegarLoop]: 1269 mSDtfsCounter, 3141 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 1963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3265 SdHoareTripleChecker+Valid, 5234 SdHoareTripleChecker+Invalid, 3799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1963 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:19,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3265 Valid, 5234 Invalid, 3799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1963 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-22 14:35:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2021-12-22 14:35:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 8823. [2021-12-22 14:35:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8823 states, 6248 states have (on average 1.3517925736235596) internal successors, (8446), 6374 states have internal predecessors, (8446), 1831 states have call successors, (1831), 672 states have call predecessors, (1831), 743 states have return successors, (1994), 1848 states have call predecessors, (1994), 1828 states have call successors, (1994) [2021-12-22 14:35:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8823 states to 8823 states and 12271 transitions. [2021-12-22 14:35:20,185 INFO L78 Accepts]: Start accepts. Automaton has 8823 states and 12271 transitions. Word has length 201 [2021-12-22 14:35:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:20,186 INFO L470 AbstractCegarLoop]: Abstraction has 8823 states and 12271 transitions. [2021-12-22 14:35:20,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 14:35:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8823 states and 12271 transitions. [2021-12-22 14:35:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-22 14:35:20,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:20,197 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:20,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:35:20,197 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:20,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1493837649, now seen corresponding path program 1 times [2021-12-22 14:35:20,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:20,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888606826] [2021-12-22 14:35:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:20,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:35:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:35:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 14:35:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:35:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 14:35:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 14:35:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:35:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 14:35:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-22 14:35:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 14:35:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 14:35:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 14:35:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:35:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-22 14:35:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-22 14:35:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-22 14:35:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-22 14:35:20,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:20,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888606826] [2021-12-22 14:35:20,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888606826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:20,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:20,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:35:20,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94395771] [2021-12-22 14:35:20,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:20,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:35:20,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:35:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:35:20,471 INFO L87 Difference]: Start difference. First operand 8823 states and 12271 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 14:35:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:25,645 INFO L93 Difference]: Finished difference Result 24095 states and 33897 transitions. [2021-12-22 14:35:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 14:35:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 203 [2021-12-22 14:35:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:25,695 INFO L225 Difference]: With dead ends: 24095 [2021-12-22 14:35:25,695 INFO L226 Difference]: Without dead ends: 15287 [2021-12-22 14:35:25,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-12-22 14:35:25,724 INFO L933 BasicCegarLoop]: 1746 mSDtfsCounter, 3112 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 2609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 5080 SdHoareTripleChecker+Invalid, 4484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2609 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:25,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3231 Valid, 5080 Invalid, 4484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2609 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-22 14:35:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15287 states. [2021-12-22 14:35:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15287 to 13211. [2021-12-22 14:35:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 9342 states have (on average 1.3526011560693643) internal successors, (12636), 9534 states have internal predecessors, (12636), 2745 states have call successors, (2745), 1016 states have call predecessors, (2745), 1123 states have return successors, (2991), 2764 states have call predecessors, (2991), 2742 states have call successors, (2991) [2021-12-22 14:35:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 18372 transitions. [2021-12-22 14:35:26,273 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 18372 transitions. Word has length 203 [2021-12-22 14:35:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:26,274 INFO L470 AbstractCegarLoop]: Abstraction has 13211 states and 18372 transitions. [2021-12-22 14:35:26,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 14:35:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 18372 transitions. [2021-12-22 14:35:26,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-22 14:35:26,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:26,289 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:26,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:35:26,289 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:26,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash 195434766, now seen corresponding path program 1 times [2021-12-22 14:35:26,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:26,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99975348] [2021-12-22 14:35:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:26,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:35:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:35:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:35:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:35:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:35:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:35:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:35:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 14:35:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 14:35:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 14:35:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 14:35:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-22 14:35:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 14:35:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-22 14:35:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-22 14:35:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 14:35:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-22 14:35:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-22 14:35:26,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:26,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99975348] [2021-12-22 14:35:26,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99975348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:26,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:26,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:35:26,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935557522] [2021-12-22 14:35:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:26,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:35:26,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:35:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:35:26,492 INFO L87 Difference]: Start difference. First operand 13211 states and 18372 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 14:35:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:29,682 INFO L93 Difference]: Finished difference Result 24017 states and 33605 transitions. [2021-12-22 14:35:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:35:29,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 207 [2021-12-22 14:35:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:29,719 INFO L225 Difference]: With dead ends: 24017 [2021-12-22 14:35:29,720 INFO L226 Difference]: Without dead ends: 10819 [2021-12-22 14:35:29,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-12-22 14:35:29,748 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 1877 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 1465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 3353 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1465 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:29,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 3353 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1465 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 14:35:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2021-12-22 14:35:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 9366. [2021-12-22 14:35:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 6630 states have (on average 1.3506787330316743) internal successors, (8955), 6763 states have internal predecessors, (8955), 1931 states have call successors, (1931), 733 states have call predecessors, (1931), 804 states have return successors, (2094), 1943 states have call predecessors, (2094), 1928 states have call successors, (2094) [2021-12-22 14:35:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 12980 transitions. [2021-12-22 14:35:30,230 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 12980 transitions. Word has length 207 [2021-12-22 14:35:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:30,231 INFO L470 AbstractCegarLoop]: Abstraction has 9366 states and 12980 transitions. [2021-12-22 14:35:30,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 14:35:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 12980 transitions. [2021-12-22 14:35:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-22 14:35:30,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:30,241 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:30,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 14:35:30,242 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:30,242 INFO L85 PathProgramCache]: Analyzing trace with hash 404988477, now seen corresponding path program 1 times [2021-12-22 14:35:30,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:30,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534983643] [2021-12-22 14:35:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:30,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:35:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:35:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:35:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:35:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:35:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:35:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 14:35:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:35:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:35:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 14:35:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 14:35:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 14:35:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:35:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 14:35:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-22 14:35:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-22 14:35:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:35:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-22 14:35:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-22 14:35:30,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:30,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534983643] [2021-12-22 14:35:30,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534983643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:30,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:30,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:35:30,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104432451] [2021-12-22 14:35:30,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:30,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:35:30,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:35:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:35:30,447 INFO L87 Difference]: Start difference. First operand 9366 states and 12980 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-22 14:35:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:33,957 INFO L93 Difference]: Finished difference Result 19766 states and 27668 transitions. [2021-12-22 14:35:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 14:35:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 211 [2021-12-22 14:35:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:33,986 INFO L225 Difference]: With dead ends: 19766 [2021-12-22 14:35:33,987 INFO L226 Difference]: Without dead ends: 10772 [2021-12-22 14:35:34,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:35:34,005 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 1594 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 1229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1229 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:34,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 3616 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1229 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-22 14:35:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2021-12-22 14:35:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 9374. [2021-12-22 14:35:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9374 states, 6638 states have (on average 1.3502561012353118) internal successors, (8963), 6771 states have internal predecessors, (8963), 1931 states have call successors, (1931), 733 states have call predecessors, (1931), 804 states have return successors, (2094), 1943 states have call predecessors, (2094), 1928 states have call successors, (2094) [2021-12-22 14:35:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9374 states to 9374 states and 12988 transitions. [2021-12-22 14:35:34,515 INFO L78 Accepts]: Start accepts. Automaton has 9374 states and 12988 transitions. Word has length 211 [2021-12-22 14:35:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:34,515 INFO L470 AbstractCegarLoop]: Abstraction has 9374 states and 12988 transitions. [2021-12-22 14:35:34,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-22 14:35:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 9374 states and 12988 transitions. [2021-12-22 14:35:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-22 14:35:34,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:34,528 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:34,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 14:35:34,529 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1242374465, now seen corresponding path program 1 times [2021-12-22 14:35:34,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:34,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7457365] [2021-12-22 14:35:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:34,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:35:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:35:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:35:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:35:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:35:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:35:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 14:35:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:35:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:35:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 14:35:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 14:35:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 14:35:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:35:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 14:35:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-22 14:35:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-22 14:35:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:35:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-22 14:35:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-22 14:35:34,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:34,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7457365] [2021-12-22 14:35:34,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7457365] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:35:34,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639300826] [2021-12-22 14:35:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:34,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:35:34,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:35:34,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:35:34,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:35:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:35,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 14:35:35,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:35:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-22 14:35:35,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:35:35,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639300826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:35,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:35:35,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2021-12-22 14:35:35,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853969633] [2021-12-22 14:35:35,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:35,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:35,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:35:35,712 INFO L87 Difference]: Start difference. First operand 9374 states and 12988 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-22 14:35:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:36,949 INFO L93 Difference]: Finished difference Result 30527 states and 43142 transitions. [2021-12-22 14:35:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:35:36,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 211 [2021-12-22 14:35:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:37,012 INFO L225 Difference]: With dead ends: 30527 [2021-12-22 14:35:37,013 INFO L226 Difference]: Without dead ends: 21525 [2021-12-22 14:35:37,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:35:37,036 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 1528 mSDsluCounter, 4646 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:37,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 6827 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 14:35:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21525 states. [2021-12-22 14:35:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21525 to 18518. [2021-12-22 14:35:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18518 states, 13038 states have (on average 1.3469090351280872) internal successors, (17561), 13331 states have internal predecessors, (17561), 3907 states have call successors, (3907), 1429 states have call predecessors, (3907), 1572 states have return successors, (4260), 3903 states have call predecessors, (4260), 3904 states have call successors, (4260) [2021-12-22 14:35:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18518 states to 18518 states and 25728 transitions. [2021-12-22 14:35:37,816 INFO L78 Accepts]: Start accepts. Automaton has 18518 states and 25728 transitions. Word has length 211 [2021-12-22 14:35:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:37,816 INFO L470 AbstractCegarLoop]: Abstraction has 18518 states and 25728 transitions. [2021-12-22 14:35:37,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-22 14:35:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 18518 states and 25728 transitions. [2021-12-22 14:35:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-22 14:35:37,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:37,840 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:37,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:35:38,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-22 14:35:38,064 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:38,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1247154497, now seen corresponding path program 1 times [2021-12-22 14:35:38,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:38,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913137361] [2021-12-22 14:35:38,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:38,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:35:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:35:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:35:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:35:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:35:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:35:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 14:35:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:35:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:35:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 14:35:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 14:35:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 14:35:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:35:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 14:35:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-22 14:35:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-22 14:35:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:35:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-22 14:35:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:35:38,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913137361] [2021-12-22 14:35:38,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913137361] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:35:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155197842] [2021-12-22 14:35:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:38,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:35:38,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:35:38,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:35:38,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:35:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:38,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 14:35:38,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:35:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-22 14:35:39,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:35:39,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155197842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:39,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:35:39,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 17 [2021-12-22 14:35:39,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512212680] [2021-12-22 14:35:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:39,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:35:39,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:35:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:35:39,579 INFO L87 Difference]: Start difference. First operand 18518 states and 25728 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-22 14:35:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:42,410 INFO L93 Difference]: Finished difference Result 39681 states and 55933 transitions. [2021-12-22 14:35:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:35:42,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 211 [2021-12-22 14:35:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:42,467 INFO L225 Difference]: With dead ends: 39681 [2021-12-22 14:35:42,468 INFO L226 Difference]: Without dead ends: 21535 [2021-12-22 14:35:42,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-22 14:35:42,596 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 1564 mSDsluCounter, 4870 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 6745 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:42,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 6745 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 14:35:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21535 states. [2021-12-22 14:35:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21535 to 18546. [2021-12-22 14:35:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18546 states, 13058 states have (on average 1.3463776994945627) internal successors, (17581), 13355 states have internal predecessors, (17581), 3907 states have call successors, (3907), 1429 states have call predecessors, (3907), 1580 states have return successors, (4300), 3907 states have call predecessors, (4300), 3904 states have call successors, (4300) [2021-12-22 14:35:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18546 states to 18546 states and 25788 transitions. [2021-12-22 14:35:43,570 INFO L78 Accepts]: Start accepts. Automaton has 18546 states and 25788 transitions. Word has length 211 [2021-12-22 14:35:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:43,571 INFO L470 AbstractCegarLoop]: Abstraction has 18546 states and 25788 transitions. [2021-12-22 14:35:43,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-22 14:35:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18546 states and 25788 transitions. [2021-12-22 14:35:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-22 14:35:43,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:43,591 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:43,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 14:35:43,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-22 14:35:43,808 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash -862062968, now seen corresponding path program 1 times [2021-12-22 14:35:43,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:43,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311881638] [2021-12-22 14:35:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:43,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:35:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:35:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:35:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:35:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:35:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:35:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 14:35:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:35:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:35:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 14:35:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 14:35:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 14:35:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-22 14:35:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-22 14:35:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-22 14:35:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:35:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-22 14:35:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-22 14:35:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:35:44,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:44,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311881638] [2021-12-22 14:35:44,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311881638] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:35:44,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704481524] [2021-12-22 14:35:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:44,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:35:44,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:35:44,168 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) [2021-12-22 14:35:44,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:35:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:44,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 14:35:44,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:35:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-22 14:35:45,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:35:45,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704481524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:45,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:35:45,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 17 [2021-12-22 14:35:45,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724932494] [2021-12-22 14:35:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:45,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:35:45,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:35:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:35:45,137 INFO L87 Difference]: Start difference. First operand 18546 states and 25788 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-22 14:35:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:48,067 INFO L93 Difference]: Finished difference Result 42953 states and 60146 transitions. [2021-12-22 14:35:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:35:48,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 217 [2021-12-22 14:35:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:48,146 INFO L225 Difference]: With dead ends: 42953 [2021-12-22 14:35:48,146 INFO L226 Difference]: Without dead ends: 24779 [2021-12-22 14:35:48,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-12-22 14:35:48,184 INFO L933 BasicCegarLoop]: 2115 mSDtfsCounter, 2701 mSDsluCounter, 5255 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 7370 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:48,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 7370 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 14:35:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24779 states. [2021-12-22 14:35:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24779 to 21352. [2021-12-22 14:35:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21352 states, 15017 states have (on average 1.345008989811547) internal successors, (20198), 15377 states have internal predecessors, (20198), 4529 states have call successors, (4529), 1621 states have call predecessors, (4529), 1805 states have return successors, (5001), 4523 states have call predecessors, (5001), 4526 states have call successors, (5001) [2021-12-22 14:35:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21352 states to 21352 states and 29728 transitions. [2021-12-22 14:35:49,136 INFO L78 Accepts]: Start accepts. Automaton has 21352 states and 29728 transitions. Word has length 217 [2021-12-22 14:35:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:49,137 INFO L470 AbstractCegarLoop]: Abstraction has 21352 states and 29728 transitions. [2021-12-22 14:35:49,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-22 14:35:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 21352 states and 29728 transitions. [2021-12-22 14:35:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-22 14:35:49,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:49,154 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:49,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:35:49,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:35:49,358 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:49,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1505687327, now seen corresponding path program 2 times [2021-12-22 14:35:49,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:49,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179007217] [2021-12-22 14:35:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:49,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:35:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:35:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:35:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:35:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 14:35:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:35:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 14:35:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 14:35:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 14:35:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:35:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 14:35:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:35:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 14:35:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 14:35:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 14:35:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-22 14:35:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-22 14:35:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-22 14:35:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:35:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-22 14:35:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-22 14:35:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-22 14:35:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-22 14:35:49,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:49,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179007217] [2021-12-22 14:35:49,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179007217] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:35:49,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255565309] [2021-12-22 14:35:49,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:35:49,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:35:49,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:35:49,650 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) [2021-12-22 14:35:49,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:35:50,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:35:50,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:35:50,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 14:35:50,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:35:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 14:35:50,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:35:50,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255565309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:50,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:35:50,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-12-22 14:35:50,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575360290] [2021-12-22 14:35:50,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:50,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:35:50,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:50,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:35:50,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:35:50,794 INFO L87 Difference]: Start difference. First operand 21352 states and 29728 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)