./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:00:31,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:00:31,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:00:31,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:00:31,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:00:31,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:00:31,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:00:31,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:00:31,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:00:31,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:00:31,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:00:31,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:00:31,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:00:31,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:00:31,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:00:31,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:00:31,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:00:31,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:00:31,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:00:31,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:00:31,588 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:00:31,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:00:31,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:00:31,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:00:31,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:00:31,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:00:31,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:00:31,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:00:31,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:00:31,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:00:31,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:00:31,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:00:31,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:00:31,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:00:31,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:00:31,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:00:31,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:00:31,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:00:31,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:00:31,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:00:31,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:00:31,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:00:31,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:00:31,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:00:31,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:00:31,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:00:31,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:00:31,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:00:31,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:00:31,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:00:31,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:00:31,642 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:00:31,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:00:31,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:00:31,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:00:31,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:00:31,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:00:31,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:00:31,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:00:31,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:00:31,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:00:31,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:00:31,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:00:31,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:00:31,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:00:31,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:00:31,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:00:31,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:00:31,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:00:31,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:00:31,646 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:00:31,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:00:31,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:00:31,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2022-07-21 11:00:31,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:00:31,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:00:31,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:00:31,982 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:00:31,984 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:00:31,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-07-21 11:00:32,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea8fbe26/fab595ce6cc14e5cbd5caa183a8eebb4/FLAGe3d2c3b23 [2022-07-21 11:00:32,727 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:00:32,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-07-21 11:00:32,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea8fbe26/fab595ce6cc14e5cbd5caa183a8eebb4/FLAGe3d2c3b23 [2022-07-21 11:00:33,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea8fbe26/fab595ce6cc14e5cbd5caa183a8eebb4 [2022-07-21 11:00:33,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:00:33,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:00:33,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:00:33,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:00:33,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:00:33,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:33" (1/1) ... [2022-07-21 11:00:33,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735b4b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:33, skipping insertion in model container [2022-07-21 11:00:33,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:33" (1/1) ... [2022-07-21 11:00:33,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:00:33,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:00:33,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-07-21 11:00:34,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:00:34,350 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:00:34,496 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-07-21 11:00:34,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:00:34,754 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:00:34,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34 WrapperNode [2022-07-21 11:00:34,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:00:34,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:00:34,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:00:34,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:00:34,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:34,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:34,965 INFO L137 Inliner]: procedures = 174, calls = 1340, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 2613 [2022-07-21 11:00:34,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:00:34,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:00:34,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:00:34,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:00:34,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:34,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:34,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:35,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:35,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:35,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:35,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:35,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:00:35,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:00:35,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:00:35,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:00:35,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (1/1) ... [2022-07-21 11:00:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:00:35,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:00:35,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:00:35,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:00:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-07-21 11:00:35,256 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-07-21 11:00:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-07-21 11:00:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-07-21 11:00:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:00:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 11:00:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 11:00:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-07-21 11:00:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-07-21 11:00:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:00:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:00:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:00:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:00:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:00:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-21 11:00:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-21 11:00:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-21 11:00:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-21 11:00:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:00:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:00:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 11:00:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 11:00:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:00:35,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:00:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-21 11:00:35,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-21 11:00:35,261 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2022-07-21 11:00:35,261 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2022-07-21 11:00:35,261 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-21 11:00:35,261 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-21 11:00:35,261 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-21 11:00:35,262 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-21 11:00:35,262 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-07-21 11:00:35,262 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-07-21 11:00:35,262 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2022-07-21 11:00:35,262 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2022-07-21 11:00:35,262 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:00:35,263 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:00:35,263 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2022-07-21 11:00:35,263 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2022-07-21 11:00:35,263 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-07-21 11:00:35,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-07-21 11:00:35,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:00:35,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:00:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:00:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-07-21 11:00:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-07-21 11:00:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:00:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:00:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:00:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:00:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:00:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:00:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:00:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-21 11:00:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-21 11:00:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-07-21 11:00:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-07-21 11:00:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-07-21 11:00:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-07-21 11:00:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:00:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-21 11:00:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-21 11:00:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2022-07-21 11:00:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2022-07-21 11:00:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 11:00:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 11:00:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:00:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:00:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:00:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:00:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:00:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-07-21 11:00:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-07-21 11:00:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-21 11:00:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-21 11:00:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:00:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-07-21 11:00:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-07-21 11:00:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-21 11:00:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-21 11:00:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-21 11:00:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-21 11:00:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-07-21 11:00:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-07-21 11:00:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:00:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:00:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-21 11:00:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-21 11:00:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-07-21 11:00:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-07-21 11:00:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 11:00:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 11:00:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-07-21 11:00:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-07-21 11:00:35,273 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2022-07-21 11:00:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2022-07-21 11:00:35,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-21 11:00:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-21 11:00:35,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:00:35,274 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-21 11:00:35,275 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-21 11:00:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:00:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:00:35,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:00:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:00:35,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:00:35,872 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:00:35,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:00:36,132 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:00:36,849 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-21 11:00:37,670 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:00:37,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:00:37,689 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 11:00:37,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:00:37 BoogieIcfgContainer [2022-07-21 11:00:37,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:00:37,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:00:37,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:00:37,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:00:37,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:00:33" (1/3) ... [2022-07-21 11:00:37,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507246b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:00:37, skipping insertion in model container [2022-07-21 11:00:37,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:34" (2/3) ... [2022-07-21 11:00:37,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507246b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:00:37, skipping insertion in model container [2022-07-21 11:00:37,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:00:37" (3/3) ... [2022-07-21 11:00:37,705 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-07-21 11:00:37,718 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:00:37,718 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:00:37,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:00:37,818 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f720b60, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e0e89de [2022-07-21 11:00:37,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:00:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 826 states, 603 states have (on average 1.3747927031509122) internal successors, (829), 633 states have internal predecessors, (829), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) [2022-07-21 11:00:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 11:00:37,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:37,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:37,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 527149613, now seen corresponding path program 1 times [2022-07-21 11:00:37,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:37,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809508748] [2022-07-21 11:00:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:37,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 11:00:38,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:38,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809508748] [2022-07-21 11:00:38,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809508748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:38,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:38,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:00:38,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484125639] [2022-07-21 11:00:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:38,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:00:38,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:38,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:00:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:00:38,525 INFO L87 Difference]: Start difference. First operand has 826 states, 603 states have (on average 1.3747927031509122) internal successors, (829), 633 states have internal predecessors, (829), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 11:00:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:41,963 INFO L93 Difference]: Finished difference Result 2773 states and 4101 transitions. [2022-07-21 11:00:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:00:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-07-21 11:00:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:42,000 INFO L225 Difference]: With dead ends: 2773 [2022-07-21 11:00:42,001 INFO L226 Difference]: Without dead ends: 1924 [2022-07-21 11:00:42,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:00:42,021 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 2446 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 1181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1181 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:42,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2557 Valid, 3098 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1181 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 11:00:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-07-21 11:00:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1585. [2022-07-21 11:00:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1165 states have (on average 1.36137339055794) internal successors, (1586), 1205 states have internal predecessors, (1586), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-07-21 11:00:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2253 transitions. [2022-07-21 11:00:42,193 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2253 transitions. Word has length 29 [2022-07-21 11:00:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:42,194 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2253 transitions. [2022-07-21 11:00:42,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 11:00:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2253 transitions. [2022-07-21 11:00:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 11:00:42,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:42,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:42,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:00:42,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:42,200 INFO L85 PathProgramCache]: Analyzing trace with hash 195057076, now seen corresponding path program 1 times [2022-07-21 11:00:42,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:42,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552324116] [2022-07-21 11:00:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:42,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:42,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:00:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 11:00:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:42,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552324116] [2022-07-21 11:00:42,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552324116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:42,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:42,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:00:42,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808857559] [2022-07-21 11:00:42,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:42,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:00:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:00:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:00:42,425 INFO L87 Difference]: Start difference. First operand 1585 states and 2253 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:44,130 INFO L93 Difference]: Finished difference Result 1950 states and 2809 transitions. [2022-07-21 11:00:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:00:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-21 11:00:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:44,145 INFO L225 Difference]: With dead ends: 1950 [2022-07-21 11:00:44,145 INFO L226 Difference]: Without dead ends: 1937 [2022-07-21 11:00:44,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:00:44,152 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 1802 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:44,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 1936 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 11:00:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2022-07-21 11:00:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1585. [2022-07-21 11:00:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1165 states have (on average 1.3605150214592274) internal successors, (1585), 1205 states have internal predecessors, (1585), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-07-21 11:00:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2252 transitions. [2022-07-21 11:00:44,245 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2252 transitions. Word has length 39 [2022-07-21 11:00:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:44,246 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2252 transitions. [2022-07-21 11:00:44,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2252 transitions. [2022-07-21 11:00:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 11:00:44,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:44,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:44,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:00:44,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash 252315378, now seen corresponding path program 1 times [2022-07-21 11:00:44,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:44,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833454308] [2022-07-21 11:00:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:44,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:00:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 11:00:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:44,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833454308] [2022-07-21 11:00:44,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833454308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:44,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:44,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:00:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219926114] [2022-07-21 11:00:44,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:44,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:00:44,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:00:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:00:44,525 INFO L87 Difference]: Start difference. First operand 1585 states and 2252 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:47,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:47,916 INFO L93 Difference]: Finished difference Result 5389 states and 7961 transitions. [2022-07-21 11:00:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:00:47,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-21 11:00:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:47,944 INFO L225 Difference]: With dead ends: 5389 [2022-07-21 11:00:47,945 INFO L226 Difference]: Without dead ends: 3823 [2022-07-21 11:00:47,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:00:47,957 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 2527 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 1185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1185 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:47,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 3051 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1185 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 11:00:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2022-07-21 11:00:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3298. [2022-07-21 11:00:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 2431 states have (on average 1.3562320032908268) internal successors, (3297), 2507 states have internal predecessors, (3297), 678 states have call successors, (678), 165 states have call predecessors, (678), 188 states have return successors, (793), 669 states have call predecessors, (793), 673 states have call successors, (793) [2022-07-21 11:00:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 4768 transitions. [2022-07-21 11:00:48,138 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 4768 transitions. Word has length 39 [2022-07-21 11:00:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:48,139 INFO L495 AbstractCegarLoop]: Abstraction has 3298 states and 4768 transitions. [2022-07-21 11:00:48,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:48,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 4768 transitions. [2022-07-21 11:00:48,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 11:00:48,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:48,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:48,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:00:48,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:48,144 INFO L85 PathProgramCache]: Analyzing trace with hash -768568990, now seen corresponding path program 1 times [2022-07-21 11:00:48,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:48,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025409850] [2022-07-21 11:00:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:48,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:48,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:48,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:00:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 11:00:48,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:48,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025409850] [2022-07-21 11:00:48,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025409850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:48,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:48,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:00:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110263748] [2022-07-21 11:00:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:48,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:00:48,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:00:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:00:48,391 INFO L87 Difference]: Start difference. First operand 3298 states and 4768 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:51,703 INFO L93 Difference]: Finished difference Result 10872 states and 16391 transitions. [2022-07-21 11:00:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:00:51,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-07-21 11:00:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:51,756 INFO L225 Difference]: With dead ends: 10872 [2022-07-21 11:00:51,756 INFO L226 Difference]: Without dead ends: 7593 [2022-07-21 11:00:51,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:00:51,780 INFO L413 NwaCegarLoop]: 1184 mSDtfsCounter, 2543 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 1201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2646 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1201 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:51,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2646 Valid, 2923 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1201 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 11:00:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2022-07-21 11:00:52,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 6717. [2022-07-21 11:00:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 4956 states have (on average 1.3520984665052462) internal successors, (6701), 5104 states have internal predecessors, (6701), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-21 11:00:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9880 transitions. [2022-07-21 11:00:52,166 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9880 transitions. Word has length 40 [2022-07-21 11:00:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:52,168 INFO L495 AbstractCegarLoop]: Abstraction has 6717 states and 9880 transitions. [2022-07-21 11:00:52,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9880 transitions. [2022-07-21 11:00:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 11:00:52,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:52,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:52,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:00:52,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:52,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1943758837, now seen corresponding path program 1 times [2022-07-21 11:00:52,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:52,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336512415] [2022-07-21 11:00:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:52,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:00:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 11:00:52,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:52,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336512415] [2022-07-21 11:00:52,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336512415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:52,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:52,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:00:52,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982158798] [2022-07-21 11:00:52,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:52,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:00:52,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:00:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:00:52,370 INFO L87 Difference]: Start difference. First operand 6717 states and 9880 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:55,106 INFO L93 Difference]: Finished difference Result 7591 states and 11290 transitions. [2022-07-21 11:00:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:00:55,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-21 11:00:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:55,153 INFO L225 Difference]: With dead ends: 7591 [2022-07-21 11:00:55,154 INFO L226 Difference]: Without dead ends: 7588 [2022-07-21 11:00:55,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:00:55,161 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 2530 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:55,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2632 Valid, 2939 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 11:00:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2022-07-21 11:00:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 6718. [2022-07-21 11:00:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 4957 states have (on average 1.3520274359491629) internal successors, (6702), 5105 states have internal predecessors, (6702), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-21 11:00:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9881 transitions. [2022-07-21 11:00:55,554 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9881 transitions. Word has length 41 [2022-07-21 11:00:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:55,555 INFO L495 AbstractCegarLoop]: Abstraction has 6718 states and 9881 transitions. [2022-07-21 11:00:55,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9881 transitions. [2022-07-21 11:00:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 11:00:55,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:55,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:00:55,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash 126580421, now seen corresponding path program 1 times [2022-07-21 11:00:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:55,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632593148] [2022-07-21 11:00:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:00:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 11:00:55,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:55,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632593148] [2022-07-21 11:00:55,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632593148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:55,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:55,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:00:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457729809] [2022-07-21 11:00:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:55,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:00:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:00:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:00:55,734 INFO L87 Difference]: Start difference. First operand 6718 states and 9881 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:57,249 INFO L93 Difference]: Finished difference Result 7587 states and 11286 transitions. [2022-07-21 11:00:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:00:57,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-21 11:00:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:57,304 INFO L225 Difference]: With dead ends: 7587 [2022-07-21 11:00:57,304 INFO L226 Difference]: Without dead ends: 7584 [2022-07-21 11:00:57,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:00:57,310 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1781 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:57,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 1876 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 11:00:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7584 states. [2022-07-21 11:00:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7584 to 6717. [2022-07-21 11:00:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 4957 states have (on average 1.3518257010288481) internal successors, (6701), 5104 states have internal predecessors, (6701), 1361 states have call successors, (1361), 327 states have call predecessors, (1361), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-21 11:00:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9879 transitions. [2022-07-21 11:00:57,662 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9879 transitions. Word has length 42 [2022-07-21 11:00:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:57,664 INFO L495 AbstractCegarLoop]: Abstraction has 6717 states and 9879 transitions. [2022-07-21 11:00:57,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9879 transitions. [2022-07-21 11:00:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 11:00:57,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:57,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:57,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:00:57,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:57,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash -371370760, now seen corresponding path program 1 times [2022-07-21 11:00:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:57,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542683180] [2022-07-21 11:00:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:57,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:00:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 11:00:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542683180] [2022-07-21 11:00:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542683180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:57,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:57,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:00:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493660997] [2022-07-21 11:00:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:57,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:00:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:00:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:00:57,820 INFO L87 Difference]: Start difference. First operand 6717 states and 9879 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:59,198 INFO L93 Difference]: Finished difference Result 7586 states and 11284 transitions. [2022-07-21 11:00:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:00:59,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-07-21 11:00:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:59,231 INFO L225 Difference]: With dead ends: 7586 [2022-07-21 11:00:59,232 INFO L226 Difference]: Without dead ends: 7574 [2022-07-21 11:00:59,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:00:59,237 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 1784 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:59,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 1867 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 11:00:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2022-07-21 11:00:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 6707. [2022-07-21 11:00:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6707 states, 4948 states have (on average 1.3516572352465643) internal successors, (6688), 5094 states have internal predecessors, (6688), 1360 states have call successors, (1360), 327 states have call predecessors, (1360), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-21 11:00:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6707 states to 6707 states and 9865 transitions. [2022-07-21 11:00:59,564 INFO L78 Accepts]: Start accepts. Automaton has 6707 states and 9865 transitions. Word has length 43 [2022-07-21 11:00:59,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:59,564 INFO L495 AbstractCegarLoop]: Abstraction has 6707 states and 9865 transitions. [2022-07-21 11:00:59,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:00:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6707 states and 9865 transitions. [2022-07-21 11:00:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-21 11:00:59,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:59,576 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 11:00:59,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:00:59,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:59,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:59,577 INFO L85 PathProgramCache]: Analyzing trace with hash -134116982, now seen corresponding path program 1 times [2022-07-21 11:00:59,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:59,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504142279] [2022-07-21 11:00:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:59,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:00:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 11:00:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:00:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:00:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:00:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:00:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:00:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:00:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 11:00:59,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:59,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504142279] [2022-07-21 11:00:59,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504142279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:59,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:59,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 11:00:59,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423201341] [2022-07-21 11:00:59,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 11:00:59,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 11:00:59,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:00:59,943 INFO L87 Difference]: Start difference. First operand 6707 states and 9865 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:02,527 INFO L93 Difference]: Finished difference Result 16108 states and 23839 transitions. [2022-07-21 11:01:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:01:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-21 11:01:02,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:02,568 INFO L225 Difference]: With dead ends: 16108 [2022-07-21 11:01:02,568 INFO L226 Difference]: Without dead ends: 9420 [2022-07-21 11:01:02,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:01:02,591 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 2390 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 1495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 3306 SdHoareTripleChecker+Invalid, 3158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1495 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:02,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 3306 Invalid, 3158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1495 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 11:01:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2022-07-21 11:01:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 7983. [2022-07-21 11:01:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7983 states, 5905 states have (on average 1.3483488569009314) internal successors, (7962), 6083 states have internal predecessors, (7962), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-07-21 11:01:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7983 states to 7983 states and 11681 transitions. [2022-07-21 11:01:02,920 INFO L78 Accepts]: Start accepts. Automaton has 7983 states and 11681 transitions. Word has length 143 [2022-07-21 11:01:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:02,921 INFO L495 AbstractCegarLoop]: Abstraction has 7983 states and 11681 transitions. [2022-07-21 11:01:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 7983 states and 11681 transitions. [2022-07-21 11:01:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 11:01:02,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:02,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 11:01:02,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 11:01:02,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:02,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1543029914, now seen corresponding path program 1 times [2022-07-21 11:01:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:02,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894097317] [2022-07-21 11:01:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:01:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 11:01:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:01:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:01:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:01:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:01:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 11:01:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:03,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894097317] [2022-07-21 11:01:03,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894097317] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:03,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505072014] [2022-07-21 11:01:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:03,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:03,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:03,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:03,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:01:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:03,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:01:03,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 11:01:04,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:04,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505072014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:04,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:01:04,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-21 11:01:04,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745706079] [2022-07-21 11:01:04,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:04,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:01:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:01:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:01:04,133 INFO L87 Difference]: Start difference. First operand 7983 states and 11681 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:05,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:05,027 INFO L93 Difference]: Finished difference Result 23983 states and 35141 transitions. [2022-07-21 11:01:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:01:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-07-21 11:01:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:05,104 INFO L225 Difference]: With dead ends: 23983 [2022-07-21 11:01:05,104 INFO L226 Difference]: Without dead ends: 16023 [2022-07-21 11:01:05,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:01:05,145 INFO L413 NwaCegarLoop]: 2213 mSDtfsCounter, 1438 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 7254 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:05,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 7254 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 11:01:05,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16023 states. [2022-07-21 11:01:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16023 to 8031. [2022-07-21 11:01:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8031 states, 5937 states have (on average 1.346471281792151) internal successors, (7994), 6107 states have internal predecessors, (7994), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 527 states have return successors, (2203), 1659 states have call predecessors, (2203), 1563 states have call successors, (2203) [2022-07-21 11:01:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 11763 transitions. [2022-07-21 11:01:05,885 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 11763 transitions. Word has length 152 [2022-07-21 11:01:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:05,885 INFO L495 AbstractCegarLoop]: Abstraction has 8031 states and 11763 transitions. [2022-07-21 11:01:05,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 11763 transitions. [2022-07-21 11:01:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 11:01:05,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:05,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 11:01:05,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 11:01:06,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:06,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:06,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash 531912664, now seen corresponding path program 1 times [2022-07-21 11:01:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:06,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536316566] [2022-07-21 11:01:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:01:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 11:01:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:01:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:01:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:01:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:01:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 11:01:06,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:06,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536316566] [2022-07-21 11:01:06,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536316566] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:06,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391630570] [2022-07-21 11:01:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:06,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:06,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:06,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:06,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 11:01:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:07,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 11:01:07,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 11:01:07,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:07,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391630570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:07,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:01:07,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-21 11:01:07,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944322205] [2022-07-21 11:01:07,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:07,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:07,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:07,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:07,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:01:07,259 INFO L87 Difference]: Start difference. First operand 8031 states and 11763 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:07,698 INFO L93 Difference]: Finished difference Result 16277 states and 23887 transitions. [2022-07-21 11:01:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:07,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-07-21 11:01:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:07,737 INFO L225 Difference]: With dead ends: 16277 [2022-07-21 11:01:07,738 INFO L226 Difference]: Without dead ends: 8269 [2022-07-21 11:01:07,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:01:07,766 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 256 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:07,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2273 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:01:07,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2022-07-21 11:01:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 8031. [2022-07-21 11:01:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8031 states, 5937 states have (on average 1.345123799898939) internal successors, (7986), 6099 states have internal predecessors, (7986), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 527 states have return successors, (2203), 1659 states have call predecessors, (2203), 1563 states have call successors, (2203) [2022-07-21 11:01:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 11755 transitions. [2022-07-21 11:01:08,330 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 11755 transitions. Word has length 152 [2022-07-21 11:01:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:08,331 INFO L495 AbstractCegarLoop]: Abstraction has 8031 states and 11755 transitions. [2022-07-21 11:01:08,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 11755 transitions. [2022-07-21 11:01:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-21 11:01:08,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:08,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 11:01:08,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:08,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 11:01:08,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash 620818428, now seen corresponding path program 1 times [2022-07-21 11:01:08,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:08,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339320122] [2022-07-21 11:01:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:08,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:01:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 11:01:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:01:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 11:01:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:01:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:01:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 11:01:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 11:01:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339320122] [2022-07-21 11:01:08,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339320122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373632806] [2022-07-21 11:01:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:08,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:08,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:08,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:08,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 11:01:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:09,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-21 11:01:09,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 11:01:09,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:01:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 11:01:10,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373632806] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:01:10,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:01:10,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 31 [2022-07-21 11:01:10,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215101823] [2022-07-21 11:01:10,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:01:10,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 11:01:10,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:10,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 11:01:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2022-07-21 11:01:10,285 INFO L87 Difference]: Start difference. First operand 8031 states and 11755 transitions. Second operand has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-21 11:01:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:20,196 INFO L93 Difference]: Finished difference Result 23225 states and 36925 transitions. [2022-07-21 11:01:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 11:01:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) Word has length 157 [2022-07-21 11:01:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:20,278 INFO L225 Difference]: With dead ends: 23225 [2022-07-21 11:01:20,278 INFO L226 Difference]: Without dead ends: 15201 [2022-07-21 11:01:20,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=238, Invalid=1832, Unknown=0, NotChecked=0, Total=2070 [2022-07-21 11:01:20,313 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 3706 mSDsluCounter, 17312 mSDsCounter, 0 mSdLazyCounter, 11098 mSolverCounterSat, 2095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3846 SdHoareTripleChecker+Valid, 18591 SdHoareTripleChecker+Invalid, 13193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2095 IncrementalHoareTripleChecker+Valid, 11098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:20,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3846 Valid, 18591 Invalid, 13193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2095 Valid, 11098 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-21 11:01:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15201 states. [2022-07-21 11:01:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15201 to 8095. [2022-07-21 11:01:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8095 states, 5989 states have (on average 1.3421272332609784) internal successors, (8038), 6147 states have internal predecessors, (8038), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 539 states have return successors, (2243), 1675 states have call predecessors, (2243), 1563 states have call successors, (2243) [2022-07-21 11:01:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8095 states to 8095 states and 11847 transitions. [2022-07-21 11:01:21,146 INFO L78 Accepts]: Start accepts. Automaton has 8095 states and 11847 transitions. Word has length 157 [2022-07-21 11:01:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:21,147 INFO L495 AbstractCegarLoop]: Abstraction has 8095 states and 11847 transitions. [2022-07-21 11:01:21,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-21 11:01:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 8095 states and 11847 transitions. [2022-07-21 11:01:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 11:01:21,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:21,161 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:21,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:21,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:21,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:21,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1788786096, now seen corresponding path program 1 times [2022-07-21 11:01:21,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:21,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426927645] [2022-07-21 11:01:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:01:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 11:01:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:01:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:01:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:01:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:01:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 11:01:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 11:01:21,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:21,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426927645] [2022-07-21 11:01:21,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426927645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:21,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:21,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:01:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676236809] [2022-07-21 11:01:21,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:21,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:01:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:01:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:01:21,858 INFO L87 Difference]: Start difference. First operand 8095 states and 11847 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 11:01:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:26,965 INFO L93 Difference]: Finished difference Result 17480 states and 25811 transitions. [2022-07-21 11:01:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 11:01:26,968 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2022-07-21 11:01:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:27,014 INFO L225 Difference]: With dead ends: 17480 [2022-07-21 11:01:27,015 INFO L226 Difference]: Without dead ends: 9408 [2022-07-21 11:01:27,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-21 11:01:27,036 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 1764 mSDsluCounter, 4623 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 1239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 4342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1239 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:27,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 5626 Invalid, 4342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1239 Valid, 3103 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-21 11:01:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9408 states. [2022-07-21 11:01:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9408 to 8135. [2022-07-21 11:01:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8135 states, 6021 states have (on average 1.3416376017272877) internal successors, (8078), 6171 states have internal predecessors, (8078), 1574 states have call successors, (1574), 352 states have call predecessors, (1574), 539 states have return successors, (2251), 1691 states have call predecessors, (2251), 1571 states have call successors, (2251) [2022-07-21 11:01:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8135 states to 8135 states and 11903 transitions. [2022-07-21 11:01:27,627 INFO L78 Accepts]: Start accepts. Automaton has 8135 states and 11903 transitions. Word has length 169 [2022-07-21 11:01:27,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:27,629 INFO L495 AbstractCegarLoop]: Abstraction has 8135 states and 11903 transitions. [2022-07-21 11:01:27,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 11:01:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8135 states and 11903 transitions. [2022-07-21 11:01:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-21 11:01:27,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:27,648 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:01:27,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 11:01:27,648 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash -92495082, now seen corresponding path program 1 times [2022-07-21 11:01:27,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:27,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893808445] [2022-07-21 11:01:27,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:27,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 11:01:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 11:01:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:01:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:01:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 11:01:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:01:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 11:01:28,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:28,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893808445] [2022-07-21 11:01:28,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893808445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:28,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:28,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:01:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955114379] [2022-07-21 11:01:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:28,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:01:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:01:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:01:28,024 INFO L87 Difference]: Start difference. First operand 8135 states and 11903 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:01:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:32,670 INFO L93 Difference]: Finished difference Result 17522 states and 25845 transitions. [2022-07-21 11:01:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:01:32,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-07-21 11:01:32,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:32,718 INFO L225 Difference]: With dead ends: 17522 [2022-07-21 11:01:32,719 INFO L226 Difference]: Without dead ends: 9406 [2022-07-21 11:01:32,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:01:32,747 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1768 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 1229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 4494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1229 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:32,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 5632 Invalid, 4494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1229 Valid, 3265 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 11:01:32,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2022-07-21 11:01:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 8136. [2022-07-21 11:01:33,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8136 states, 6022 states have (on average 1.3415808701428098) internal successors, (8079), 6172 states have internal predecessors, (8079), 1574 states have call successors, (1574), 352 states have call predecessors, (1574), 539 states have return successors, (2251), 1691 states have call predecessors, (2251), 1571 states have call successors, (2251) [2022-07-21 11:01:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8136 states to 8136 states and 11904 transitions. [2022-07-21 11:01:33,467 INFO L78 Accepts]: Start accepts. Automaton has 8136 states and 11904 transitions. Word has length 175 [2022-07-21 11:01:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:33,467 INFO L495 AbstractCegarLoop]: Abstraction has 8136 states and 11904 transitions. [2022-07-21 11:01:33,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:01:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 8136 states and 11904 transitions. [2022-07-21 11:01:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 11:01:33,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:33,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:01:33,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 11:01:33,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:33,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash -933269753, now seen corresponding path program 1 times [2022-07-21 11:01:33,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:33,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428026829] [2022-07-21 11:01:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 11:01:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:01:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:01:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:01:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 11:01:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 11:01:33,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:33,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428026829] [2022-07-21 11:01:33,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428026829] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:33,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997617319] [2022-07-21 11:01:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:33,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:33,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:33,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:33,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 11:01:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:34,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-21 11:01:34,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:34,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 11:01:34,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 11:01:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 11:01:34,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:34,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997617319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:34,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:01:34,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-07-21 11:01:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802930552] [2022-07-21 11:01:34,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:34,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:01:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:01:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-07-21 11:01:34,982 INFO L87 Difference]: Start difference. First operand 8136 states and 11904 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 11:01:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:37,230 INFO L93 Difference]: Finished difference Result 18024 states and 26640 transitions. [2022-07-21 11:01:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 11:01:37,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2022-07-21 11:01:37,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:37,281 INFO L225 Difference]: With dead ends: 18024 [2022-07-21 11:01:37,281 INFO L226 Difference]: Without dead ends: 9912 [2022-07-21 11:01:37,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2022-07-21 11:01:37,305 INFO L413 NwaCegarLoop]: 2199 mSDtfsCounter, 1850 mSDsluCounter, 18759 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 20958 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:37,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 20958 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 11:01:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9912 states. [2022-07-21 11:01:37,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9912 to 8103. [2022-07-21 11:01:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 5997 states have (on average 1.3408370852092713) internal successors, (8041), 6147 states have internal predecessors, (8041), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 539 states have return successors, (2243), 1683 states have call predecessors, (2243), 1563 states have call successors, (2243) [2022-07-21 11:01:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 11850 transitions. [2022-07-21 11:01:37,851 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 11850 transitions. Word has length 176 [2022-07-21 11:01:37,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:37,852 INFO L495 AbstractCegarLoop]: Abstraction has 8103 states and 11850 transitions. [2022-07-21 11:01:37,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 11:01:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 11850 transitions. [2022-07-21 11:01:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-21 11:01:37,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:37,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:01:37,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:38,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1055633972, now seen corresponding path program 1 times [2022-07-21 11:01:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:38,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865129904] [2022-07-21 11:01:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:38,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 11:01:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:01:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:01:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:01:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:01:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 11:01:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:01:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 11:01:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:38,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865129904] [2022-07-21 11:01:38,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865129904] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:38,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295847051] [2022-07-21 11:01:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:38,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:38,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:38,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:38,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 11:01:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:40,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 11:01:40,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-21 11:01:40,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:01:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 11:01:40,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295847051] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:01:40,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:01:40,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2022-07-21 11:01:40,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441182878] [2022-07-21 11:01:40,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:01:40,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 11:01:40,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:40,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 11:01:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-21 11:01:40,307 INFO L87 Difference]: Start difference. First operand 8103 states and 11850 transitions. Second operand has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 13 states have internal predecessors, (228), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2022-07-21 11:01:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:50,426 INFO L93 Difference]: Finished difference Result 18431 states and 27411 transitions. [2022-07-21 11:01:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 11:01:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 13 states have internal predecessors, (228), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) Word has length 196 [2022-07-21 11:01:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:50,472 INFO L225 Difference]: With dead ends: 18431 [2022-07-21 11:01:50,472 INFO L226 Difference]: Without dead ends: 10346 [2022-07-21 11:01:50,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=1429, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 11:01:50,501 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 8018 mSDsluCounter, 10222 mSDsCounter, 0 mSdLazyCounter, 8072 mSolverCounterSat, 5150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8116 SdHoareTripleChecker+Valid, 11530 SdHoareTripleChecker+Invalid, 13222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5150 IncrementalHoareTripleChecker+Valid, 8072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:50,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8116 Valid, 11530 Invalid, 13222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5150 Valid, 8072 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-07-21 11:01:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2022-07-21 11:01:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 7838. [2022-07-21 11:01:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7838 states, 5812 states have (on average 1.3406744666207846) internal successors, (7792), 5954 states have internal predecessors, (7792), 1492 states have call successors, (1492), 348 states have call predecessors, (1492), 533 states have return successors, (2145), 1615 states have call predecessors, (2145), 1489 states have call successors, (2145) [2022-07-21 11:01:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7838 states to 7838 states and 11429 transitions. [2022-07-21 11:01:51,077 INFO L78 Accepts]: Start accepts. Automaton has 7838 states and 11429 transitions. Word has length 196 [2022-07-21 11:01:51,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:51,077 INFO L495 AbstractCegarLoop]: Abstraction has 7838 states and 11429 transitions. [2022-07-21 11:01:51,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 13 states have internal predecessors, (228), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2022-07-21 11:01:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 7838 states and 11429 transitions. [2022-07-21 11:01:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-21 11:01:51,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:51,092 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:01:51,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:51,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 11:01:51,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1991704043, now seen corresponding path program 2 times [2022-07-21 11:01:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:51,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546419063] [2022-07-21 11:01:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:51,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:01:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:01:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:01:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:01:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:01:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:01:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:01:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 11:01:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:01:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:01:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 11:01:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546419063] [2022-07-21 11:01:52,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546419063] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452882762] [2022-07-21 11:01:52,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 11:01:52,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:52,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:52,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 11:01:53,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 11:01:53,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 11:01:53,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 3043 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-21 11:01:53,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:53,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 11:01:53,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 11:01:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-21 11:01:53,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:01:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-21 11:01:54,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452882762] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:01:54,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:01:54,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 8] total 30 [2022-07-21 11:01:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976181042] [2022-07-21 11:01:54,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:01:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 11:01:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 11:01:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-07-21 11:01:54,390 INFO L87 Difference]: Start difference. First operand 7838 states and 11429 transitions. Second operand has 30 states, 30 states have (on average 5.9) internal successors, (177), 19 states have internal predecessors, (177), 8 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (36), 12 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-21 11:02:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:16,974 INFO L93 Difference]: Finished difference Result 20972 states and 31872 transitions. [2022-07-21 11:02:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-21 11:02:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.9) internal successors, (177), 19 states have internal predecessors, (177), 8 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (36), 12 states have call predecessors, (36), 8 states have call successors, (36) Word has length 199 [2022-07-21 11:02:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:17,030 INFO L225 Difference]: With dead ends: 20972 [2022-07-21 11:02:17,031 INFO L226 Difference]: Without dead ends: 13161 [2022-07-21 11:02:17,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 443 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=613, Invalid=3677, Unknown=0, NotChecked=0, Total=4290 [2022-07-21 11:02:17,058 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 9754 mSDsluCounter, 25117 mSDsCounter, 0 mSdLazyCounter, 21735 mSolverCounterSat, 4938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9892 SdHoareTripleChecker+Valid, 27018 SdHoareTripleChecker+Invalid, 26673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4938 IncrementalHoareTripleChecker+Valid, 21735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:17,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9892 Valid, 27018 Invalid, 26673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4938 Valid, 21735 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2022-07-21 11:02:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13161 states. [2022-07-21 11:02:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13161 to 7810. [2022-07-21 11:02:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7810 states, 5792 states have (on average 1.339779005524862) internal successors, (7760), 5934 states have internal predecessors, (7760), 1484 states have call successors, (1484), 348 states have call predecessors, (1484), 533 states have return successors, (2137), 1607 states have call predecessors, (2137), 1481 states have call successors, (2137) [2022-07-21 11:02:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 11381 transitions. [2022-07-21 11:02:17,814 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 11381 transitions. Word has length 199 [2022-07-21 11:02:17,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:17,815 INFO L495 AbstractCegarLoop]: Abstraction has 7810 states and 11381 transitions. [2022-07-21 11:02:17,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.9) internal successors, (177), 19 states have internal predecessors, (177), 8 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (36), 12 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-21 11:02:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 11381 transitions. [2022-07-21 11:02:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 11:02:17,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:17,829 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:02:17,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 11:02:18,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 11:02:18,056 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1741297651, now seen corresponding path program 1 times [2022-07-21 11:02:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:18,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406602589] [2022-07-21 11:02:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:02:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:02:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:02:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:02:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:02:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:02:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:02:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:02:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:02:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:02:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:02:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 11:02:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-21 11:02:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406602589] [2022-07-21 11:02:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406602589] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:02:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170279623] [2022-07-21 11:02:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:18,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:02:18,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:02:18,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:02:18,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 11:02:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:19,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:02:19,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-21 11:02:19,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:02:19,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170279623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:19,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:02:19,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-07-21 11:02:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623915177] [2022-07-21 11:02:19,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:19,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:02:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:19,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:02:19,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:02:19,364 INFO L87 Difference]: Start difference. First operand 7810 states and 11381 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:02:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:21,252 INFO L93 Difference]: Finished difference Result 23381 states and 34090 transitions. [2022-07-21 11:02:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 11:02:21,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 202 [2022-07-21 11:02:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:21,347 INFO L225 Difference]: With dead ends: 23381 [2022-07-21 11:02:21,348 INFO L226 Difference]: Without dead ends: 23364 [2022-07-21 11:02:21,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:02:21,367 INFO L413 NwaCegarLoop]: 2392 mSDtfsCounter, 2108 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:21,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 4453 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 11:02:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23364 states. [2022-07-21 11:02:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23364 to 23326. [2022-07-21 11:02:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23326 states, 17292 states have (on average 1.340735600277585) internal successors, (23184), 17730 states have internal predecessors, (23184), 4440 states have call successors, (4440), 1036 states have call predecessors, (4440), 1593 states have return successors, (6405), 4799 states have call predecessors, (6405), 4437 states have call successors, (6405) [2022-07-21 11:02:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23326 states to 23326 states and 34029 transitions. [2022-07-21 11:02:23,251 INFO L78 Accepts]: Start accepts. Automaton has 23326 states and 34029 transitions. Word has length 202 [2022-07-21 11:02:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:23,252 INFO L495 AbstractCegarLoop]: Abstraction has 23326 states and 34029 transitions. [2022-07-21 11:02:23,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:02:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 23326 states and 34029 transitions. [2022-07-21 11:02:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 11:02:23,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:23,271 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:02:23,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 11:02:23,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:02:23,488 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:23,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash 730180401, now seen corresponding path program 1 times [2022-07-21 11:02:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:23,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836363512] [2022-07-21 11:02:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:23,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:02:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:02:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:02:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:02:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:02:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:02:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:02:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:02:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:02:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:02:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:02:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 11:02:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-21 11:02:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:23,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836363512] [2022-07-21 11:02:23,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836363512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:23,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:23,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 11:02:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450087346] [2022-07-21 11:02:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 11:02:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 11:02:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:02:23,919 INFO L87 Difference]: Start difference. First operand 23326 states and 34029 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:35,457 INFO L93 Difference]: Finished difference Result 84685 states and 126400 transitions. [2022-07-21 11:02:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 11:02:35,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 202 [2022-07-21 11:02:35,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:36,015 INFO L225 Difference]: With dead ends: 84685 [2022-07-21 11:02:36,015 INFO L226 Difference]: Without dead ends: 61386 [2022-07-21 11:02:36,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-07-21 11:02:36,259 INFO L413 NwaCegarLoop]: 1189 mSDtfsCounter, 5659 mSDsluCounter, 3766 mSDsCounter, 0 mSdLazyCounter, 3497 mSolverCounterSat, 3658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5758 SdHoareTripleChecker+Valid, 4955 SdHoareTripleChecker+Invalid, 7155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3658 IncrementalHoareTripleChecker+Valid, 3497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:36,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5758 Valid, 4955 Invalid, 7155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3658 Valid, 3497 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-21 11:02:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61386 states. [2022-07-21 11:02:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61386 to 22274. [2022-07-21 11:02:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22274 states, 16492 states have (on average 1.343439243269464) internal successors, (22156), 16894 states have internal predecessors, (22156), 4344 states have call successors, (4344), 1036 states have call predecessors, (4344), 1437 states have return successors, (5709), 4607 states have call predecessors, (5709), 4341 states have call successors, (5709) [2022-07-21 11:02:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22274 states to 22274 states and 32209 transitions. [2022-07-21 11:02:39,336 INFO L78 Accepts]: Start accepts. Automaton has 22274 states and 32209 transitions. Word has length 202 [2022-07-21 11:02:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:39,337 INFO L495 AbstractCegarLoop]: Abstraction has 22274 states and 32209 transitions. [2022-07-21 11:02:39,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 22274 states and 32209 transitions. [2022-07-21 11:02:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 11:02:39,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:39,351 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 11:02:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 11:02:39,352 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:39,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1833483783, now seen corresponding path program 1 times [2022-07-21 11:02:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:39,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782986100] [2022-07-21 11:02:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:02:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:02:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:02:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:02:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:02:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:02:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:02:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:02:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:02:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 11:02:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:02:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:02:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:02:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:02:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-21 11:02:41,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:41,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782986100] [2022-07-21 11:02:41,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782986100] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:02:41,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103505321] [2022-07-21 11:02:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:41,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:02:41,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:02:41,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:02:41,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 11:02:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:43,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 3119 conjuncts, 140 conjunts are in the unsatisfiable core [2022-07-21 11:02:43,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:43,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 11:02:43,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 11:02:44,306 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-21 11:02:44,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 11:02:44,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 11:02:44,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 11:02:44,561 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-21 11:02:44,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 11:02:44,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 11:02:44,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 11:02:44,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-07-21 11:02:45,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-07-21 11:02:45,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-07-21 11:02:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 54 proven. 11 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-21 11:02:45,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:02:56,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103505321] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:02:56,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:02:56,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22] total 52 [2022-07-21 11:02:56,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80024840] [2022-07-21 11:02:56,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 11:02:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-21 11:02:56,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-21 11:02:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=3502, Unknown=0, NotChecked=0, Total=3782 [2022-07-21 11:02:56,808 INFO L87 Difference]: Start difference. First operand 22274 states and 32209 transitions. Second operand has 52 states, 48 states have (on average 4.375) internal successors, (210), 37 states have internal predecessors, (210), 17 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-21 11:03:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:37,395 INFO L93 Difference]: Finished difference Result 66574 states and 102521 transitions. [2022-07-21 11:03:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-21 11:03:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 48 states have (on average 4.375) internal successors, (210), 37 states have internal predecessors, (210), 17 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) Word has length 212 [2022-07-21 11:03:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:37,585 INFO L225 Difference]: With dead ends: 66574 [2022-07-21 11:03:37,585 INFO L226 Difference]: Without dead ends: 44327 [2022-07-21 11:03:37,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 328 SyntacticMatches, 5 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7087 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=2210, Invalid=21660, Unknown=0, NotChecked=0, Total=23870 [2022-07-21 11:03:37,658 INFO L413 NwaCegarLoop]: 1855 mSDtfsCounter, 11592 mSDsluCounter, 37276 mSDsCounter, 0 mSdLazyCounter, 31090 mSolverCounterSat, 6999 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11711 SdHoareTripleChecker+Valid, 39131 SdHoareTripleChecker+Invalid, 41004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 6999 IncrementalHoareTripleChecker+Valid, 31090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2915 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:37,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11711 Valid, 39131 Invalid, 41004 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [6999 Valid, 31090 Invalid, 0 Unknown, 2915 Unchecked, 28.1s Time] [2022-07-21 11:03:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44327 states. [2022-07-21 11:03:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44327 to 23102. [2022-07-21 11:03:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23102 states, 17080 states have (on average 1.3379391100702576) internal successors, (22852), 17506 states have internal predecessors, (22852), 4476 states have call successors, (4476), 1108 states have call predecessors, (4476), 1545 states have return successors, (5973), 4751 states have call predecessors, (5973), 4473 states have call successors, (5973) [2022-07-21 11:03:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23102 states to 23102 states and 33301 transitions. [2022-07-21 11:03:40,730 INFO L78 Accepts]: Start accepts. Automaton has 23102 states and 33301 transitions. Word has length 212 [2022-07-21 11:03:40,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:40,731 INFO L495 AbstractCegarLoop]: Abstraction has 23102 states and 33301 transitions. [2022-07-21 11:03:40,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 48 states have (on average 4.375) internal successors, (210), 37 states have internal predecessors, (210), 17 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-21 11:03:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 23102 states and 33301 transitions. [2022-07-21 11:03:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 11:03:40,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:40,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 11:03:40,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 11:03:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:03:40,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:40,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2098825928, now seen corresponding path program 1 times [2022-07-21 11:03:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:40,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500981940] [2022-07-21 11:03:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:40,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:03:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:03:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:03:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:03:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:03:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:03:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:03:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:03:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:03:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:03:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:03:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 11:03:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:03:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-21 11:03:41,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500981940] [2022-07-21 11:03:41,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500981940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:41,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:41,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:03:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23076003] [2022-07-21 11:03:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:41,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:03:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:03:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:03:41,365 INFO L87 Difference]: Start difference. First operand 23102 states and 33301 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 11:03:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:51,569 INFO L93 Difference]: Finished difference Result 53277 states and 78143 transitions. [2022-07-21 11:03:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 11:03:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 212 [2022-07-21 11:03:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:51,681 INFO L225 Difference]: With dead ends: 53277 [2022-07-21 11:03:51,682 INFO L226 Difference]: Without dead ends: 29854 [2022-07-21 11:03:51,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2022-07-21 11:03:51,734 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 3594 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 2582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 5955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2582 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:51,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3679 Valid, 5052 Invalid, 5955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2582 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-21 11:03:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29854 states. [2022-07-21 11:03:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29854 to 22562. [2022-07-21 11:03:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22562 states, 16630 states have (on average 1.3303668069753458) internal successors, (22124), 17016 states have internal predecessors, (22124), 4416 states have call successors, (4416), 1078 states have call predecessors, (4416), 1515 states have return successors, (5913), 4721 states have call predecessors, (5913), 4413 states have call successors, (5913) [2022-07-21 11:03:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22562 states to 22562 states and 32453 transitions. [2022-07-21 11:03:54,238 INFO L78 Accepts]: Start accepts. Automaton has 22562 states and 32453 transitions. Word has length 212 [2022-07-21 11:03:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:54,238 INFO L495 AbstractCegarLoop]: Abstraction has 22562 states and 32453 transitions. [2022-07-21 11:03:54,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 11:03:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 22562 states and 32453 transitions. [2022-07-21 11:03:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 11:03:54,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:54,249 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 11:03:54,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 11:03:54,250 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2079284806, now seen corresponding path program 1 times [2022-07-21 11:03:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:54,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852189495] [2022-07-21 11:03:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:03:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:03:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:03:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:03:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:03:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:03:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:03:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:03:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:03:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:03:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:03:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 11:03:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:03:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-21 11:03:54,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:54,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852189495] [2022-07-21 11:03:54,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852189495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:54,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:54,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:03:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409579393] [2022-07-21 11:03:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:54,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:03:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:54,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:03:54,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:03:54,553 INFO L87 Difference]: Start difference. First operand 22562 states and 32453 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:03:58,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:58,987 INFO L93 Difference]: Finished difference Result 37057 states and 53972 transitions. [2022-07-21 11:03:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:03:58,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 212 [2022-07-21 11:03:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:59,039 INFO L225 Difference]: With dead ends: 37057 [2022-07-21 11:03:59,039 INFO L226 Difference]: Without dead ends: 14521 [2022-07-21 11:03:59,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:03:59,088 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 2696 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 1953 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1953 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:59,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 3039 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1953 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 11:03:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14521 states. [2022-07-21 11:04:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14521 to 11016. [2022-07-21 11:04:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 8095 states have (on average 1.3268684373069797) internal successors, (10741), 8273 states have internal predecessors, (10741), 2177 states have call successors, (2177), 525 states have call predecessors, (2177), 743 states have return successors, (2924), 2340 states have call predecessors, (2924), 2174 states have call successors, (2924) [2022-07-21 11:04:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 15842 transitions. [2022-07-21 11:04:00,340 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 15842 transitions. Word has length 212 [2022-07-21 11:04:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:00,340 INFO L495 AbstractCegarLoop]: Abstraction has 11016 states and 15842 transitions. [2022-07-21 11:04:00,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:04:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 15842 transitions. [2022-07-21 11:04:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-21 11:04:00,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:00,347 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:00,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 11:04:00,348 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1018479461, now seen corresponding path program 1 times [2022-07-21 11:04:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:00,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003227350] [2022-07-21 11:04:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:00,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:04:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:04:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:04:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 11:04:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:04:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:04:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:04:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 11:04:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:04:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:04:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:04:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:04:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:04:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:04:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:01,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003227350] [2022-07-21 11:04:01,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003227350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:04:01,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955550367] [2022-07-21 11:04:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:01,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:04:01,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:04:01,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:04:01,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 11:04:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:02,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 3517 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-21 11:04:02,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:04:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-21 11:04:02,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:04:02,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955550367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:02,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:04:02,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 17 [2022-07-21 11:04:02,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653843737] [2022-07-21 11:04:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:02,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:04:02,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:04:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:04:02,188 INFO L87 Difference]: Start difference. First operand 11016 states and 15842 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 11:04:03,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:03,233 INFO L93 Difference]: Finished difference Result 21956 states and 31592 transitions. [2022-07-21 11:04:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 11:04:03,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) Word has length 247 [2022-07-21 11:04:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:03,272 INFO L225 Difference]: With dead ends: 21956 [2022-07-21 11:04:03,272 INFO L226 Difference]: Without dead ends: 11040 [2022-07-21 11:04:03,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 297 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-21 11:04:03,299 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 2 mSDsluCounter, 6722 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7845 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:03,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7845 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:04:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11040 states. [2022-07-21 11:04:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11040 to 11040. [2022-07-21 11:04:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11040 states, 8119 states have (on average 1.3259022047050129) internal successors, (10765), 8285 states have internal predecessors, (10765), 2177 states have call successors, (2177), 525 states have call predecessors, (2177), 743 states have return successors, (2924), 2352 states have call predecessors, (2924), 2174 states have call successors, (2924) [2022-07-21 11:04:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 15866 transitions. [2022-07-21 11:04:04,421 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 15866 transitions. Word has length 247 [2022-07-21 11:04:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:04,421 INFO L495 AbstractCegarLoop]: Abstraction has 11040 states and 15866 transitions. [2022-07-21 11:04:04,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 11:04:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 15866 transitions. [2022-07-21 11:04:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-21 11:04:04,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:04,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:04,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 11:04:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:04:04,648 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash -270283457, now seen corresponding path program 2 times [2022-07-21 11:04:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:04,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021347966] [2022-07-21 11:04:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:04,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms